Fostex

Fostex Dome Tweeter FT28D  

order no. fx-ft28d

EUR 130,00 excl. VAT: € 109.24 / $ 119.08

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/40 W
• frequency range = 1000-50000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• DC resistance Re = 8 Ohm
• mounting diameter d = 65 mm
• overall diameter d = 90 mm
• mounting depth (not countersunk) t = 32,8 mm

PDF data sheet

Fostex Dome Tweeter FT48D - 8 Ohm  

order no. fx-ft48d

EUR 148,00 excl. VAT: € 124.37 / $ 135.56

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/50 W
• frequency range = 800-30000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 93 dB (2,83V; 1m)
• mounting diameter d = 115 mm
• overall diameter d = 128 mm
• mounting depth (not countersunk) t = 38,7 mm

Fostex Super Tweeter FT17 H  

order no. fx-ft17h

EUR 85,00 excl. VAT: € 71.43 / $ 77.86

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/30 W
• frequency range = 5000-50000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 98,5 dB (2,83V; 1m)
• DC resistance Re = 8 Ohm
• mounting diameter d = 63 mm
• overall diameter d = 87 mm
• mounting depth (not countersunk) t = 49,5 mm

PDF data sheet

Fostex Horn Super Tweeter T90A  

order no. fx-t90a

EUR 360,00 excl. VAT: € 302.52 / $ 329.75

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/50 W
• frequency range = 5000-35000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 106 dB (2,83V; 1m)
• DC resistance Re = 9 Ohm
• mounting diameter d = 60 mm
• overall diameter d = 60 mm
• mounting depth (not countersunk) t = 87,8 mm

PDF data sheet

Fostex Horn Super Tweeter T96A  

order no. fx-t96a

EUR 241,00 excl. VAT: € 202.52 / $ 220.75

mm tweeter with high quality cone.

• power handling (continuous/programme) = 15/? W
• frequency range = 6000-33000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• overall diameter d = 60 mm
• mounting depth (not countersunk) t = 71,35 mm

PDF data sheet

Fostex Horn Super Tweeter T900A  

order no. fx-t900a

EUR 854,00 excl. VAT: € 717.65 / $ 782.24

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/60 W
• frequency range = 5000-38000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 106 dB (2,83V; 1m)
• DC resistance Re = 8 Ohm
• overall diameter d = 82 mm
• mounting depth (not countersunk) t = 81,8 mm

PDF data sheet

Fostex Horn Super Tweeter T925A  

order no. fx-t925a

EUR 617,00 excl. VAT: € 518.49 / $ 565.15

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/50 W
• frequency range = 5000-40000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 108 dB (2,83V; 1m)
• DC resistance Re = 9 Ohm
• overall diameter d = 82 mm
• mounting depth (not countersunk) t = 108 mm

PDF data sheet

Fostex Horn Super Tweeter T500A mk3  

order no. fx-t500a-mk3

EUR 1627,00 excl. VAT: € 1367.23 / $ 1490.28

mm tweeter with high quality cone.

• power handling (continuous/programme) = 15 W
• frequency range = 7000-36000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 104 dB (2,83V; 1m)

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Fostex H 400  

order no. fx-h400

EUR 951,00 excl. VAT: € 799.16 / $ 871.08

.

PDF data sheet

Fostex FE83NV  

order no. fx-fe83nv

EUR 54,00 excl. VAT: € 45.38 / $ 49.46

8 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/? W
• frequency range = 149,7-22000 Hz
• resonance frequency fs = 149,7 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 87,5 dB (2,83V; 1m)
• DC resistance Re = 7,1 Ohm
• force factor BL = 3,2 N/A
• voice coil inductance L = 0,1 mH
• effective mechanical mass incl. air load mms = 1,4 g
• equivalent volume of compliance Vas = 0,9 l
• total Q factor Qts = 0,78 (Qms=4,21, Qes=0,96)
• voice coil diameter = 16 mm
• mounting diameter d = 73 mm
• overall diameter d = 83 mm
• mounting depth (not countersunk) t = 46,4 mm

PDF data sheet

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Fostex FE 83EN  

order no. fx-fe83en

- not available

7 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/7 W
• frequency range = 150-30000 Hz
• resonance frequency fs = 165 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 88 dB (2,83V; 1m)
• DC resistance Re = 7,5 Ohm
• force factor BL = 3,35 N/A
• voice coil inductance L = 0,0267 mH
• effective piston radiating area Sd = 28,3 cm²
• effective mechanical mass incl. air load mms = 1,53 g
• equivalent volume of compliance Vas = 0,7 l
• total Q factor Qts = 0,84 (Qms=4,06, Qes=1,057)
• voice coil diameter = 16 mm
• maximum peak linear excursion vibration x_lin = +/- 0,15 mm
• mounting diameter d = 73 mm
• overall diameter d = 83 mm
• mounting depth (not countersunk) t = 44 mm
• mass m = 0,35 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 0,84 L volume
from 163/103 Hz (-3dB/-8dB)

recommended cabinet 2:
3,4 L volume bass reflex cabinet
with HP35 reflex tube, 8 cm long.
from 73/64 Hz (-3dB/-8dB).

Fostex FF 85WK  

order no. fx-ff85wk

EUR 79,00 excl. VAT: € 66.39 / $ 72.36

7 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/15 W
• frequency range = 100-28000 Hz
• resonance frequency fs = 115 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 86,5 dB (2,83V; 1m)
• DC resistance Re = 7,2 Ohm
• force factor BL = 3,93 N/A
• effective piston radiating area Sd = 28 cm²
• effective mechanical mass incl. air load mms = 2 g
• equivalent volume of compliance Vas = 1,03 l
• total Q factor Qts = 0,56 (Qms=3,3, Qes=0,68)
• voice coil diameter = 16 mm
• maximum peak linear excursion vibration x_lin = +/- 0,35 mm
• mounting diameter d = 73 mm
• overall diameter d = 83 mm
• mounting depth (not countersunk) t = 46,7 mm
• mass m = 0,45 kg

PDF data sheet

recommended cabinet 1:
closed cabinet with 1,7 L volume
from 161/102 Hz (-3dB/-8dB)

recommended cabinet 2:
7 L volume bass reflex cabinet
with HP50 reflex tube, 8 cm long.
from 76/63 Hz (-3dB/-8dB).

Fostex FE103NV  

order no. fx-fe103nv

- not available

10 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/? W
• frequency range = 91,8-22000 Hz
• resonance frequency fs = 91,8 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 88,5 dB (2,83V; 1m)
• DC resistance Re = 7,7 Ohm
• force factor BL = 4,7 N/A
• voice coil inductance L = 0,2 mH
• effective mechanical mass incl. air load mms = 2,5 g
• equivalent volume of compliance Vas = 4,3 l
• total Q factor Qts = 0,46 (Qms=5,2, Qes=0,5)
• voice coil diameter = 20 mm
• mounting diameter d = 93 mm
• overall diameter d = 107 mm
• mounting depth (not countersunk) t = 47,8 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 1,4 L volume
from 175/111 Hz (-3dB/-8dB)

recommended cabinet 2:
5,2 L volume bass reflex cabinet
with HP50 reflex tube, 10 cm long.
from 89/71 Hz (-3dB/-8dB).

Fostex FE 103EN  

order no. fx-fe103en

- not available

10 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/15 W
• frequency range = 90-22000 Hz
• resonance frequency fs = 83 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 7,5 Ohm
• force factor BL = 4,99 N/A
• voice coil inductance L = 0,0398 mH
• effective piston radiating area Sd = 50 cm²
• effective mechanical mass incl. air load mms = 2,55 g
• equivalent volume of compliance Vas = 5,95 l
• total Q factor Qts = 0,38 (Qms=2747, Qes=0,377)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,6 mm
• mounting diameter d = 93 mm
• overall diameter d = 107 mm
• mounting depth (not countersunk) t = 45,5 mm
• mass m = 0,58 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 1,5 L volume
from 144/91 Hz (-3dB/-8dB)

recommended cabinet 2:
5,8 L volume bass reflex cabinet
with HP50 reflex tube, 14 cm long.
from 70/57 Hz (-3dB/-8dB).

Fostex FF 105WK  

order no. fx-ff105wk

EUR 84,00 excl. VAT: € 70.59 / $ 76.94

10 cm full range driver with high quality cone.

• power handling (continuous/programme) = 10/30 W
• frequency range = 75-25000 Hz
• resonance frequency fs = 75 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 88 dB (2,83V; 1m)
• DC resistance Re = 6,7 Ohm
• force factor BL = 4,82 N/A
• effective piston radiating area Sd = 50 cm²
• effective mechanical mass incl. air load mms = 3,4 g
• equivalent volume of compliance Vas = 4,85 l
• total Q factor Qts = 0,41 (Qms=4,2, Qes=0,46)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 1,7 mm
• mounting diameter d = 93 mm
• overall diameter d = 107 mm
• mounting depth (not countersunk) t = 52,8 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 1,6 L volume
from 186/118 Hz (-3dB/-8dB)

recommended cabinet 2:
5,2 L volume bass reflex cabinet
with HP50 reflex tube, 8 cm long.
from 98/77 Hz (-3dB/-8dB).

Fostex FE126NV  

order no. fx-fe126nv

- not available

12 cm full range driver with high quality cone.

• power handling (continuous/programme) = 15/? W
• frequency range = 79,1-20000 Hz
• resonance frequency fs = 79,1 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 92 dB (2,83V; 1m)
• DC resistance Re = 7,1 Ohm
• force factor BL = 5,3 N/A
• voice coil inductance L = 0,2 mH
• effective mechanical mass incl. air load mms = 3 g
• equivalent volume of compliance Vas = 8,5 l
• total Q factor Qts = 0,33 (Qms=3,51, Qes=0,37)
• voice coil diameter = 20 mm
• mounting diameter d = 104 mm
• overall diameter d = 117 mm
• mounting depth (not countersunk) t = 61,1 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 1,3 L volume
from 214/135 Hz (-3dB/-8dB)

recommended cabinet 2:
3,8 L volume bass reflex cabinet
with HP50 reflex tube, 9 cm long.
from 117/90 Hz (-3dB/-8dB).

Fostex FE 126EN  

order no. fx-fe126en

- not available

11 cm full range driver with high quality cone.

• power handling (continuous/programme) = 15/45 W
• frequency range = 90-25000 Hz
• resonance frequency fs = 83 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 93 dB (2,83V; 1m)
• DC resistance Re = 7,2 Ohm
• force factor BL = 5,63 N/A
• voice coil inductance L = 0,035 mH
• effective piston radiating area Sd = 65 cm²
• effective mechanical mass incl. air load mms = 2,8 g
• equivalent volume of compliance Vas = 8,5 l
• total Q factor Qts = 0,31 (Qms=4,8, Qes=0,33)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,35 mm
• mounting diameter d = 104 mm
• overall diameter d = 117 mm
• mounting depth (not countersunk) t = 61 mm
• mass m = 0,99 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 2,4 L volume
from 125/79 Hz (-3dB/-8dB)

recommended cabinet 2:
9,4 L volume bass reflex cabinet
with HP50 reflex tube, 10 cm long.
from 61/50 Hz (-3dB/-8dB).

Fostex FF 125WK  

order no. fx-ff125wk

EUR 96,00 excl. VAT: € 80.67 / $ 87.93

11 cm full range driver with high quality cone.

• power handling (continuous/programme) = 16/50 W
• frequency range = 70-22000 Hz
• resonance frequency fs = 67 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 6,7 Ohm
• force factor BL = 5,59 N/A
• effective piston radiating area Sd = 66 cm²
• effective mechanical mass incl. air load mms = 5 g
• equivalent volume of compliance Vas = 7,26 l
• total Q factor Qts = 0,42 (Qms=5,09, Qes=0,46)
• voice coil diameter = 25 mm
• maximum peak linear excursion vibration x_lin = +/- 1,65 mm
• mounting diameter d = 104 mm
• overall diameter d = 117 mm
• mounting depth (not countersunk) t = 61,3 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 0,91 L volume
from 187/118 Hz (-3dB/-8dB)

recommended cabinet 2:
2,9 L volume bass reflex cabinet
with HP35 reflex tube, 8 cm long.
from 101/78 Hz (-3dB/-8dB).

Fostex FE108NS  

order no. fx-fe108ns

EUR 167,00 excl. VAT: € 140.34 / $ 152.97

12 cm full range driver with high quality cone.

• power handling (continuous/programme) = 15/? W
• frequency range = 75-20000 Hz
• resonance frequency fs = 75 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 87 dB (2,83V; 1m)
• DC resistance Re = 7,4 Ohm
• force factor BL = 5,13 N/A
• voice coil inductance L = 0,03 mH
• effective mechanical mass incl. air load mms = 2,66 g
• equivalent volume of compliance Vas = 5,73 l
• total Q factor Qts = 0,31 (Qms=3,11, Qes=0,35)
• voice coil diameter = 20 mm
• mounting diameter d = 100 mm
• overall diameter d = 128 mm
• mounting depth (not countersunk) t = 54,7 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 0,85 L volume
from 198/125 Hz (-3dB/-8dB)

recommended cabinet 2:
2,6 L volume bass reflex cabinet
with HP35 reflex tube, 8 cm long.
from 108/83 Hz (-3dB/-8dB).

Fostex FE 108 EZ  

order no. fx-fe108ez

- not available

11 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/15 W
• frequency range = 77-23000 Hz
• resonance frequency fs = 77 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• DC resistance Re = 6,8 Ohm
• force factor BL = 5,2 N/A
• voice coil inductance L = 0,038 mH
• effective piston radiating area Sd = 50 cm²
• effective mechanical mass incl. air load mms = 2,7 g
• equivalent volume of compliance Vas = 5,7 l
• total Q factor Qts = 0,31 (Qms=7,79, Qes=0,32)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,28 mm
• mounting diameter d = 99 mm
• overall diameter d = 128 mm
• mounting depth (not countersunk) t = 65 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 4 L volume
from 146/92 Hz (-3dB/-8dB)

recommended cabinet 2:
10,6 L volume bass reflex cabinet
with HP70 reflex tube, 13 cm long.
from 84/64 Hz (-3dB/-8dB).

Fostex FE166NV  

order no. fx-fe166nv

- not available

16 cm full range driver with high quality cone.

• power handling (continuous/programme) = 20/? W
• frequency range = 49,6-20000 Hz
• resonance frequency fs = 49,6 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94 dB (2,83V; 1m)
• DC resistance Re = 7,8 Ohm
• force factor BL = 7,7 N/A
• voice coil inductance L = 0,8 mH
• effective mechanical mass incl. air load mms = 7 g
• equivalent volume of compliance Vas = 36,9 l
• total Q factor Qts = 0,27 (Qms=7,88, Qes=0,28)
• voice coil diameter = 25 mm
• mounting diameter d = 146 mm
• overall diameter d = 166 mm
• mounting depth (not countersunk) t = 77,6 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 4 L volume
from 156/98 Hz (-3dB/-8dB)

recommended cabinet 2:
10,7 L volume bass reflex cabinet
with HP70 reflex tube, 11 cm long.
from 90/68 Hz (-3dB/-8dB).

Fostex FE 166EN  

order no. fx-fe166en

- not available

15 cm full range driver with high quality cone.

• power handling (continuous/programme) = 22/65 W
• frequency range = 50-22000 Hz
• resonance frequency fs = 53 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94 dB (2,83V; 1m)
• DC resistance Re = 7,2 Ohm
• force factor BL = 7,65 N/A
• voice coil inductance L = 0,052 mH
• effective piston radiating area Sd = 133 cm²
• effective mechanical mass incl. air load mms = 6,8 g
• equivalent volume of compliance Vas = 37,02 l
• total Q factor Qts = 0,27 (Qms=3426, Qes=0,266)
• voice coil diameter = 25 mm
• maximum peak linear excursion vibration x_lin = +/- 1,0 mm
• mounting diameter d = 146 mm
• overall diameter d = 166 mm
• mounting depth (not countersunk) t = 75,3 mm
• mass m = 1,6 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 5,1 L volume
from 118/74 Hz (-3dB/-8dB)

recommended cabinet 2:
17 L volume bass reflex cabinet
with HP70 reflex tube, 13 cm long.
from 62/48 Hz (-3dB/-8dB).

Fostex FF 165WK  

order no. fx-ff165wk

EUR 141,00 excl. VAT: € 118.49 / $ 129.15

15 cm full range driver with high quality cone.

• power handling (continuous/programme) = 30/90 W
• frequency range = 50-21000 Hz
• resonance frequency fs = 50 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 92 dB (2,83V; 1m)
• DC resistance Re = 6,5 Ohm
• force factor BL = 7,23 N/A
• effective piston radiating area Sd = 132 cm²
• effective mechanical mass incl. air load mms = 9,5 g
• equivalent volume of compliance Vas = 27,83 l
• total Q factor Qts = 0,34 (Qms=4,19, Qes=0,37)
• voice coil diameter = 35 mm
• maximum peak linear excursion vibration x_lin = +/- 1,85 mm
• mounting diameter d = 146 mm
• overall diameter d = 166 mm
• mounting depth (not countersunk) t = 76,6 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 4,7 L volume
from 127/80 Hz (-3dB/-8dB)

recommended cabinet 2:
17 L volume bass reflex cabinet
with HP70 reflex tube, 10 cm long.
from 64/51 Hz (-3dB/-8dB).

Fostex FE168NS  

order no. fx-fe168ns

EUR 265,00 excl. VAT: € 222.69 / $ 242.73

18 cm full range driver with high quality cone.

• power handling (continuous/programme) = 20/60 W
• frequency range = 60-20000 Hz
• resonance frequency fs = 60 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90,5 dB (2,83V; 1m)
• DC resistance Re = 7,1 Ohm
• force factor BL = 7,4 N/A
• voice coil inductance L = 0,18 mH
• effective piston radiating area Sd = 128,61 cm²
• effective mechanical mass incl. air load mms = 8,5 g
• equivalent volume of compliance Vas = 19,5 l
• total Q factor Qts = 0,38 (Qms=7,3, Qes=0,4)
• voice coil diameter = 25 mm
• maximum peak linear excursion vibration x_lin = +/- 2,2 mm
• mounting diameter d = 151 mm
• overall diameter d = 190 mm
• mounting depth (not countersunk) t = 72,4 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 2,4 L volume
from 156/98 Hz (-3dB/-8dB)

recommended cabinet 2:
6,1 L volume bass reflex cabinet
with HP50 reflex tube, 11 cm long.
from 91/69 Hz (-3dB/-8dB).

Fostex FE 168 EZ  

order no. fx-fe168ez

EUR 331,00 excl. VAT: € 278.15 / $ 303.18

17 cm full range driver with high quality cone.

• power handling (continuous/programme) = 27/80 W
• frequency range = 51-21000 Hz
• resonance frequency fs = 51 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94,5 dB (2,83V; 1m)
• DC resistance Re = 6,8 Ohm
• force factor BL = 8 N/A
• voice coil inductance L = 0,056 mH
• effective piston radiating area Sd = 113 cm²
• effective mechanical mass incl. air load mms = 8,7 g
• equivalent volume of compliance Vas = 23,7 l
• total Q factor Qts = 0,26 (Qms=5,328, Qes=0,27)
• voice coil diameter = 30 mm
• maximum peak linear excursion vibration x_lin = +/- 1,6 mm
• mounting diameter d = 143 mm
• overall diameter d = 190 mm
• mounting depth (not countersunk) t = 88 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 16 L volume
from 75/47 Hz (-3dB/-8dB)

recommended cabinet 2:
49 L volume bass reflex cabinet
with HP70 reflex tube, 10 cm long.
from 40/31 Hz (-3dB/-8dB).

Fostex F 200A  

order no. fx-f200a

- not available

19 cm full range driver with high quality cone. The driver is magnetically shielded.

• power handling (continuous/programme) = 27/80 W
• frequency range = 40-20000 Hz
• resonance frequency fs = 30 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• DC resistance Re = 7,3 Ohm
• effective piston radiating area Sd = 201 cm²
• effective mechanical mass incl. air load mms = 18,6 g
• equivalent volume of compliance Vas = 98,96 l
• total Q factor Qts = 0,32 (Qms=2,63, Qes=0,36)
• maximum peak linear excursion vibration x_lin = +/- 2 mm
• mounting diameter d = 182 mm
• overall diameter d = 194 mm
• mounting depth (not countersunk) t = 124 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 5 L volume
from 136/86 Hz (-3dB/-8dB)

recommended cabinet 2:
12,8 L volume bass reflex cabinet
with HP70 reflex tube, 13 cm long.
from 80/60 Hz (-3dB/-8dB).

Fostex FE206NV  

order no. fx-fe206nv

EUR 165,00 excl. VAT: € 138.66 / $ 151.13

20 cm full range driver with high quality cone.

• power handling (continuous/programme) = 30/? W
• frequency range = 44,7-18000 Hz
• resonance frequency fs = 44,7 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 7,2 Ohm
• force factor BL = 10,7 N/A
• voice coil inductance L = 0,1 mH
• effective mechanical mass incl. air load mms = 15,2 g
• equivalent volume of compliance Vas = 50,2 l
• total Q factor Qts = 0,26 (Qms=7,25, Qes=0,27)
• voice coil diameter = 35 mm
• mounting diameter d = 185 mm
• overall diameter d = 208 mm
• mounting depth (not countersunk) t = 89,3 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 3,3 L volume
from 195/123 Hz (-3dB/-8dB)

recommended cabinet 2:
5,6 L volume bass reflex cabinet
with HP70 reflex tube, 15 cm long.
from 135/99 Hz (-3dB/-8dB).

Fostex FE 206EN  

order no. fx-fe206en

- not available

20 cm full range driver with high quality cone.

• power handling (continuous/programme) = 30/90 W
• frequency range = 40-20000 Hz
• resonance frequency fs = 45 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 6,8 Ohm
• force factor BL = 10,65 N/A
• voice coil inductance L = 0,0525 mH
• effective piston radiating area Sd = 206 cm²
• effective mechanical mass incl. air load mms = 12,2 g
• equivalent volume of compliance Vas = 70,99 l
• total Q factor Qts = 0,19 (Qms=4,57, Qes=0,194)
• voice coil diameter = 35 mm
• maximum peak linear excursion vibration x_lin = +/- 0,8 mm
• mounting diameter d = 185 mm
• overall diameter d = 208 mm
• mounting depth (not countersunk) t = 87,9 mm
• mass m = 3,2 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 11,4 L volume
from 101/64 Hz (-3dB/-8dB)

recommended cabinet 2:
39 L volume bass reflex cabinet
with HP70 reflex tube, 6 cm long.
from 53/41 Hz (-3dB/-8dB).

Fostex FF 225WK  

order no. fx-ff225wk

EUR 233,00 excl. VAT: € 195.80 / $ 213.42

20 cm full range driver with high quality cone.

• power handling (continuous/programme) = 34/100 W
• frequency range = 40-17000 Hz
• resonance frequency fs = 44 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 93 dB (2,83V; 1m)
• DC resistance Re = 6 Ohm
• force factor BL = 8,49 N/A
• effective piston radiating area Sd = 220 cm²
• effective mechanical mass incl. air load mms = 18,4 g
• equivalent volume of compliance Vas = 57,9 l
• total Q factor Qts = 0,35 (Qms=2,31, Qes=0,409)
• voice coil diameter = 50 mm
• maximum peak linear excursion vibration x_lin = +/- 2,25 mm
• mounting diameter d = 185 mm
• overall diameter d = 208 mm
• mounting depth (not countersunk) t = 91,7 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 3,5 L volume
from 169/106 Hz (-3dB/-8dB)

recommended cabinet 2:
7,1 L volume bass reflex cabinet
with HP70 reflex tube, 16 cm long.
from 108/81 Hz (-3dB/-8dB).

Fostex FE208NS  

order no. fx-fe208ns

- not available

22 cm full range driver with high quality cone.

• power handling (continuous/programme) = 40/? W
• frequency range = 45-20000 Hz
• resonance frequency fs = 45 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94 dB (2,83V; 1m)
• DC resistance Re = 6,6 Ohm
• force factor BL = 10,79 N/A
• voice coil inductance L = 0,19 mH
• effective mechanical mass incl. air load mms = 10,79 g
• equivalent volume of compliance Vas = 54,57 l
• total Q factor Qts = 0,21 (Qms=6,87, Qes=0,22)
• voice coil diameter = 35,5 mm
• mounting diameter d = 185 mm
• overall diameter d = 230 mm
• mounting depth (not countersunk) t = 103,8 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 2,8 L volume
from 182/115 Hz (-3dB/-8dB)

recommended cabinet 2:
4,8 L volume bass reflex cabinet
with HP70 reflex tube, 22 cm long.
from 126/93 Hz (-3dB/-8dB).

Fostex FE 208 EZ  

order no. fx-fe208ez

EUR 400,00 excl. VAT: € 336.13 / $ 366.39

21 cm full range driver with high quality cone.

• power handling (continuous/programme) = 34/100 W
• frequency range = 42-14000 Hz
• resonance frequency fs = 42 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 97 dB (2,83V; 1m)
• DC resistance Re = 6,4 Ohm
• force factor BL = 10,8 N/A
• voice coil inductance L = 0,0517 mH
• effective piston radiating area Sd = 201 cm²
• effective mechanical mass incl. air load mms = 13,3 g
• equivalent volume of compliance Vas = 60,1 l
• total Q factor Qts = 0,18 (Qms=6,191, Qes=0,19)
• voice coil diameter = 35 mm
• maximum peak linear excursion vibration x_lin = +/- 1,25 mm
• mounting diameter d = 182 mm
• overall diameter d = 230 mm
• mounting depth (not countersunk) t = 93,5 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 1,5 L volume
from 112/70 Hz (-3dB/-8dB)

recommended cabinet 2:
6,2 L volume bass reflex cabinet
with HP35 reflex tube, 10 cm long.
from 53/44 Hz (-3dB/-8dB).

Fostex FW108HS  

order no. fx-fw108hs

EUR 219,00 excl. VAT: € 184.03 / $ 200.60

10 cm bass driver with high quality cone.

• power handling (continuous/programme) = 20/50 W
• frequency range = 65-15000 Hz
• resonance frequency fs = 65 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 84,5 dB (2,83V; 1m)
• DC resistance Re = 7,2 Ohm
• force factor BL = 5,98 N/A
• voice coil inductance L = 0,48 mH
• effective piston radiating area Sd = 50 cm²
• effective mechanical mass incl. air load mms = 6 g
• equivalent volume of compliance Vas = 3,6 l
• total Q factor Qts = 0,46 (Qms=8,778, Qes=0,488)
• voice coil diameter = 30 mm
• mounting diameter d = 105 mm
• overall diameter d = 128 mm
• mounting depth (not countersunk) t = 74 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 0,41 L volume
from 168/106 Hz (-3dB/-8dB)

recommended cabinet 2:
1 L volume bass reflex cabinet
with HP35 reflex tube, 33 cm long.
from 98/74 Hz (-3dB/-8dB).

Fostex FW 108N  

order no. fx-fw108n

- not available

11 cm bass driver with high quality cone.

• power handling (continuous/programme) = 17/50 W
• frequency range = 55-10000 Hz
• resonance frequency fs = 55 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 85 dB (2,83V; 1m)
• DC resistance Re = 6,3 Ohm
• effective piston radiating area Sd = 50,256 cm²
• effective mechanical mass incl. air load mms = 6,9 g
• equivalent volume of compliance Vas = 4,09 l
• total Q factor Qts = 0,26 (Qms=8,8, Qes=0,27)
• maximum peak linear excursion vibration x_lin = +/- 1,9 mm
• mounting diameter d = 100 mm
• overall diameter d = 128 mm
• mounting depth (not countersunk) t = 72 mm
• mass m = 1,7 kg

PDF data sheet

recommended cabinet 1:
closed cabinet with 2,6 L volume
from 99/62 Hz (-3dB/-8dB)

recommended cabinet 2:
8,7 L volume bass reflex cabinet
with HP50 reflex tube, 21 cm long.
from 52/41 Hz (-3dB/-8dB).

Fostex FW168HS  

order no. fx-fw168hs

EUR 283,00 excl. VAT: € 237.82 / $ 259.22

26 cm bass driver with high quality cone.

• power handling (continuous/programme) = 35/100 W
• frequency range = 42-10000 Hz
• resonance frequency fs = 42 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 86 dB (2,83V; 1m)
• DC resistance Re = 5,9 Ohm
• force factor BL = 10,56 N/A
• voice coil inductance L = 0,47 mH
• effective piston radiating area Sd = 133 cm²
• effective mechanical mass incl. air load mms = 13,8 g
• equivalent volume of compliance Vas = 14,31 l
• total Q factor Qts = 0,34 (Qms=13,8, Qes=0,346)
• voice coil diameter = 50 mm
• mounting diameter d = 151 mm
• overall diameter d = 190 mm
• mounting depth (not countersunk) t = 100 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 2,8 L volume
from 106/67 Hz (-3dB/-8dB)

recommended cabinet 2:
9,2 L volume bass reflex cabinet
with HP50 reflex tube, 17 cm long.
from 56/44 Hz (-3dB/-8dB).

Fostex FW 168HR  

order no. fx-fw168hr

EUR 492,00 excl. VAT: € 413.45 / $ 450.66

17 cm bass driver with high quality cone.

• power handling (continuous/programme) = 35/100 W
• frequency range = 50-12000 Hz
• resonance frequency fs = 45 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 88 dB (2,83V; 1m)
• DC resistance Re = 7,1 Ohm
• force factor BL = 8,98 N/A
• effective piston radiating area Sd = 110 cm²
• effective mechanical mass incl. air load mms = 15,7 g
• equivalent volume of compliance Vas = 15,1 l
• total Q factor Qts = 0,34 (Qms=3,25, Qes=0,38)
• maximum peak linear excursion vibration x_lin = +/- 2,65 mm
• mounting diameter d = 145 mm
• overall diameter d = 190 mm
• mounting depth (not countersunk) t = 86 mm
• mass m = 3,64 kg

PDF data sheet

recommended cabinet 1:
closed cabinet with 13,3 L volume
from 61/39 Hz (-3dB/-8dB)

recommended cabinet 2:
51 L volume bass reflex cabinet
with HP70 reflex tube, 16 cm long.
from 30/24 Hz (-3dB/-8dB).

Fostex FW208HS  

order no. fx-fw208hs

EUR 324,00 excl. VAT: € 272.27 / $ 296.77

20 cm bass driver with high quality cone.

• power handling (continuous/programme) = 50/100 W
• frequency range = 32-7000 Hz
• resonance frequency fs = 32 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 87 dB (2,83V; 1m)
• DC resistance Re = 6,5 Ohm
• force factor BL = 10,565 N/A
• voice coil inductance L = 0,427 mH
• effective piston radiating area Sd = 206 cm²
• effective mechanical mass incl. air load mms = 37 g
• equivalent volume of compliance Vas = 42,69 l
• total Q factor Qts = 0,41 (Qms=12,927, Qes=0,427)
• voice coil diameter = 65 mm
• mounting diameter d = 185 mm
• overall diameter d = 230 mm
• mounting depth (not countersunk) t = 109 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 27 L volume
from 71/45 Hz (-3dB/-8dB)

recommended cabinet 2:
74 L volume bass reflex cabinet
with 2x HP100 reflex tube, 36 cm long.
from 40/31 Hz (-3dB/-8dB).

Fostex W 300A2  

order no. fx-w300a

- not available

30 cm bass driver with high quality cone.

• power handling (continuous/programme) = 50/150 W
• frequency range = 30-3000 Hz
• resonance frequency fs = 25 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 93 dB (2,83V; 1m)
• DC resistance Re = 7 Ohm
• force factor BL = 18,75 N/A
• voice coil inductance L = 0,1 mH
• effective piston radiating area Sd = 539 cm²
• effective mechanical mass incl. air load mms = 92,7 g
• equivalent volume of compliance Vas = 227 l
• total Q factor Qts = 0,28 (Qms=9,17, Qes=0,29)
• voice coil diameter = 80 mm
• maximum peak linear excursion vibration x_lin = +/- 6,5 mm
• mounting diameter d = 278 mm
• overall diameter d = 317 mm
• mounting depth (not countersunk) t = 150,3 mm
• mass m = 6,3 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 46 L volume
from 64/41 Hz (-3dB/-8dB)

recommended cabinet 2:
139 L volume bass reflex cabinet
with 2x HP100 reflex tube, 20 cm long.
from 35/27 Hz (-3dB/-8dB).

Fostex W 400A-HR  

order no. fx-w400a-hr

EUR 4526,00 excl. VAT: € 3803.36 / $ 4145.66

38 cm bass driver with high quality cone.

• power handling (continuous/programme) = 67/200 W
• frequency range = 30-2500 Hz
• resonance frequency fs = 25 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94 dB (2,83V; 1m)
• DC resistance Re = 6 Ohm
• force factor BL = 19,5 N/A
• voice coil inductance L = 2,64 mH
• effective piston radiating area Sd = 820 cm²
• effective mechanical mass incl. air load mms = 130 g
• equivalent volume of compliance Vas = 310 l
• total Q factor Qts = 0,31 (Qms=8,2, Qes=0,32)
• voice coil diameter = 100 mm
• maximum peak linear excursion vibration x_lin = +/- 5,5 mm
• mounting diameter d = 350 mm
• overall diameter d = 395 mm
• mounting depth (not countersunk) t = 242 mm
• mass m = 21,4 kg

PDF data sheet

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Fostex FW 800HS  

order no. fx-fw800hs

EUR 8065,00 excl. VAT: € 6777.31 / $ 7387.27

78 cm bass driver with high quality cone.

• power handling (continuous/programme) = 150/450 W
• frequency range = 20-1500 Hz
• resonance frequency fs = 25 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 6,6 Ohm
• force factor BL = 30,25 N/A
• effective piston radiating area Sd = 4015 cm²
• effective mechanical mass incl. air load mms = 629 g
• equivalent volume of compliance Vas = 1,473 l
• total Q factor Qts = 0,68 (Qms=19,22, Qes=0,71)
• voice coil diameter = 99,2 mm
• maximum peak linear excursion vibration x_lin = +/- 2,3 mm
• mounting diameter d = 748 mm
• overall diameter d = 800 mm
• mounting depth (not countersunk) t = 292 mm
• mass m = 21 kg

PDF data sheet

recommended cabinet 1:
closed cabinet with 3,1 L volume
from 125/79 Hz (-3dB/-8dB)

recommended cabinet 2:
12,4 L volume bass reflex cabinet
with HP50 reflex tube, 7 cm long.
from 60/49 Hz (-3dB/-8dB).

Fostex FX 120  

order no. fx-fx120

- not available

12 cm full range driver with high quality cone.

• power handling (continuous/programme) = 10/30 W
• frequency range = 80-20000 Hz
• resonance frequency fs = 70 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 7,3 Ohm
• effective piston radiating area Sd = 66,5 cm²
• effective mechanical mass incl. air load mms = 5,3 g
• equivalent volume of compliance Vas = 8,21 l
• total Q factor Qts = 0,45 (Qms=8,4, Qes=0,47)
• maximum peak linear excursion vibration x_lin = +/- 2 mm
• mounting diameter d = 126 mm
• overall diameter d = 123 mm
• mounting depth (not countersunk) t = 62,5 mm

PDF data sheet

Fostex Ribbon Tweeter FT 7RP  

order no. fx-ft7rp

- not available

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/80 W
• frequency range = 3000-45000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 93 dB (2,83V; 1m)
• overall diameter d = 88x76 mm

PDF data sheet

Fostex Super Tweeter FT 96H  

order no. fx-ft96h

- not available

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/50 W
• frequency range = 4000-33000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 100 dB (2,83V; 1m)
• DC resistance Re = 8,2 Ohm
• mounting diameter d = 68 mm
• overall diameter d = 68 mm
• mounting depth (not countersunk) t = 50 mm

PDF data sheet

Fostex UFLC Tweeter FT-207D - 8 Ohm  

order no. fx-ft207d

- not available

20 mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/60 W
• frequency range = 2000-40000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• voice coil diameter = 20 mm
• mounting diameter d = 72 mm
• overall diameter d = 89,4 mm
• mounting depth (not countersunk) t = 34,4 mm

PDF data sheet

Fostex Horn Super Tweeter T 500A  

order no. fx-t500a

- not available

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/50 W
• frequency range = 2000-25000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 102 dB (2,83V; 1m)
• DC resistance Re = 8 Ohm
• overall diameter d = 99 mm
• mounting depth (not countersunk) t = 127,5 mm

PDF data sheet

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Fostex Horn Super Tweeter T 500A-MK2  

order no. fx-t500a-mk2

- not available

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/50 W
• frequency range = 4000-35000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 103 dB (2,83V; 1m)
• mounting diameter d = 99 mm
• overall diameter d = 99 mm
• mounting depth (not countersunk) t = 122,1 mm

PDF data sheet

Fostex Horn Driver D1400  

order no. fx-d1400

- not available

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/60 W
• frequency range = 650-20000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 104 dB (2,83V; 1m)

PDF data sheet

Fostex Horn Driver D1405  

order no. fx-d1405

- not available

mm tweeter with high quality cone.

• power handling (continuous/programme) = ?/60 W
• frequency range = 800-20000 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 104 dB (2,83V; 1m)

PDF data sheet

Fostex FE 83E  

order no. fx-fe83e

- not available

7 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/10 W
• frequency range = 127-30000 Hz
• resonance frequency fs = 127 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 88 dB (2,83V; 1m)
• DC resistance Re = 7,87 Ohm
• force factor BL = 2,98 N/A
• effective piston radiating area Sd = 28,3 cm²
• effective mechanical mass incl. air load mms = 1,39 g
• equivalent volume of compliance Vas = 1,29 l
• total Q factor Qts = 0,79 (Qms=4, Qes=0,98)
• voice coil diameter = 16 mm
• maximum peak linear excursion vibration x_lin = +/- 0,4 mm
• mounting diameter d = 70 mm
• overall diameter d = 83 mm
• mounting depth (not countersunk) t = 44 mm

PDF data sheet

Fostex FE 87E  

order no. fx-fe87e

- not available

7 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/10 W
• frequency range = 140-30000 Hz
• resonance frequency fs = 140 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 7,7 Ohm
• force factor BL = 2,81 N/A
• effective piston radiating area Sd = 28,3 cm²
• effective mechanical mass incl. air load mms = 1,4 g
• equivalent volume of compliance Vas = 1,03 l
• total Q factor Qts = 0,91 (Qms=3,77, Qes=1,2)
• voice coil diameter = 16 mm
• maximum peak linear excursion vibration x_lin = +/- 0,4 mm
• mounting diameter d = 70 mm
• overall diameter d = 83 mm
• mounting depth (not countersunk) t = 45,6 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 0,49 L volume
from 205/129 Hz (-3dB/-8dB)

recommended cabinet 2:
2 L volume bass reflex cabinet
with HP35 reflex tube, 9 cm long.
from 96/80 Hz (-3dB/-8dB).

Fostex FF 85K  

order no. fx-ff85k

- not available

8 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/10 W
• frequency range = 140-125000 Hz
• resonance frequency fs = 122 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 88 dB (2,83V; 1m)
• DC resistance Re = 7,08 Ohm
• force factor BL = 4,33 N/A
• effective piston radiating area Sd = 28,3 cm²
• equivalent volume of compliance Vas = 1,07 l
• total Q factor Qts = 0,48 (Qms=5,54, Qes=0,52)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,55 mm
• mounting diameter d = 72 mm
• overall diameter d = 86 mm
• mounting depth (not countersunk) t = 49 mm

PDF data sheet

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Fostex PS 100  

order no. fx-ps100

- not available

7 cm full range driver with high quality cone.

• power handling (continuous/programme) = 25/50 W
• frequency range = 200-16000 Hz
• resonance frequency fs = 200 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 92 dB (2,83V; 1m)
• DC resistance Re = 6,8 Ohm
• effective piston radiating area Sd = 58,1 cm²
• effective mechanical mass incl. air load mms = 1,66 g
• equivalent volume of compliance Vas = 1,3 l
• total Q factor Qts = 0,84 (Qms=4,56, Qes=1,03)
• maximum peak linear excursion vibration x_lin = +/- 0,5 mm
• overall diameter d = 105 mm
• mounting depth (not countersunk) t = 47,1 mm
• mass m = 0,63 kg

PDF data sheet

recommended cabinet 1:
closed cabinet with 1,4 L volume
from 182/115 Hz (-3dB/-8dB)

recommended cabinet 2:
4,6 L volume bass reflex cabinet
with HP50 reflex tube, 10 cm long.
from 95/74 Hz (-3dB/-8dB).

Fostex FE 103E  

order no. fx-fe103e

- not available

10 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/15 W
• frequency range = 79,5-22000 Hz
• resonance frequency fs = 79,5 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 7,45 Ohm
• force factor BL = 4,42 N/A
• effective piston radiating area Sd = 50 cm²
• effective mechanical mass incl. air load mms = 2,1 g
• equivalent volume of compliance Vas = 6,9 l
• total Q factor Qts = 0,35 (Qms=2,87, Qes=0,4)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,35 mm
• mounting diameter d = 92 mm
• overall diameter d = 107 mm
• mounting depth (not countersunk) t = 45,6 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 1,4 L volume
from 169/107 Hz (-3dB/-8dB)

recommended cabinet 2:
5,2 L volume bass reflex cabinet
with HP50 reflex tube, 11 cm long.
from 86/68 Hz (-3dB/-8dB).

Fostex FE 107E  

order no. fx-fe107e

- not available

10 cm full range driver with high quality cone.

• power handling (continuous/programme) = 5/15 W
• frequency range = 80-22000 Hz
• resonance frequency fs = 80 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• DC resistance Re = 7,6 Ohm
• force factor BL = 4,7 N/A
• effective piston radiating area Sd = 50,3 cm²
• effective mechanical mass incl. air load mms = 2,6 g
• equivalent volume of compliance Vas = 5,95 l
• total Q factor Qts = 0,38 (Qms=2,56, Qes=0,45)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,35 mm
• mounting diameter d = 92 mm
• overall diameter d = 107 mm
• mounting depth (not countersunk) t = 54,7 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 0,92 L volume
from 220/139 Hz (-3dB/-8dB)

recommended cabinet 2:
2,3 L volume bass reflex cabinet
with HP35 reflex tube, 7 cm long.
from 129/97 Hz (-3dB/-8dB).

Fostex FF 125K  

order no. fx-ff125k

- not available

10 cm full range driver with high quality cone.

• power handling (continuous/programme) = 16/50 W
• frequency range = 80-18000 Hz
• resonance frequency fs = 72 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 92 dB (2,83V; 1m)
• DC resistance Re = 7,2 Ohm
• effective piston radiating area Sd = 65 cm²
• effective mechanical mass incl. air load mms = 4 g
• equivalent volume of compliance Vas = 9,12 l
• total Q factor Qts = 0,26 (Qms=9,04, Qes=0,27)
• maximum peak linear excursion vibration x_lin = +/- 0,15 mm
• mounting diameter d = 100 mm
• overall diameter d = 112,2 mm
• mounting depth (not countersunk) t = 60,1 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 3,5 L volume
from 129/81 Hz (-3dB/-8dB)

recommended cabinet 2:
13,9 L volume bass reflex cabinet
with HP50 reflex tube, 6 cm long.
from 62/51 Hz (-3dB/-8dB).

Fostex FE 127E  

order no. fx-fe127e

- not available

11 cm full range driver with high quality cone.

• power handling (continuous/programme) = 22/45 W
• frequency range = 70,4-20000 Hz
• resonance frequency fs = 70,4 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 91 dB (2,83V; 1m)
• DC resistance Re = 6,5 Ohm
• force factor BL = 4,14 N/A
• effective piston radiating area Sd = 66,5 cm²
• effective mechanical mass incl. air load mms = 2,98 g
• equivalent volume of compliance Vas = 9,9 l
• total Q factor Qts = 0,43 (Qms=3,333, Qes=0,5)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,67 mm
• mounting diameter d = 102,2 mm
• overall diameter d = 117 mm
• mounting depth (not countersunk) t = 64,7 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 3,5 L volume
from 119/75 Hz (-3dB/-8dB)

recommended cabinet 2:
13,8 L volume bass reflex cabinet
with HP50 reflex tube, 7 cm long.
from 57/47 Hz (-3dB/-8dB).

Fostex F 120A  

order no. fx-f120a

- not available

11 cm full range driver with high quality cone. The driver is magnetically shielded.

• power handling (continuous/programme) = 10/30 W
• frequency range = 70-20000 Hz
• resonance frequency fs = 65 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 7 Ohm
• effective piston radiating area Sd = 66,5 cm²
• effective mechanical mass incl. air load mms = 4,7 g
• equivalent volume of compliance Vas = 9,876 l
• total Q factor Qts = 0,44 (Qms=3,1, Qes=0,51)
• maximum peak linear excursion vibration x_lin = +/- 1,5 mm
• mounting diameter d = 103 mm
• overall diameter d = 123 mm
• mounting depth (not countersunk) t = 89 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 0,92 L volume
from 222/140 Hz (-3dB/-8dB)

recommended cabinet 2:
2,2 L volume bass reflex cabinet
with HP35 reflex tube, 7 cm long.
from 132/99 Hz (-3dB/-8dB).

Fostex FE 126E  

order no. fx-fe126e

- not available

12 cm full range driver with high quality cone.

• power handling (continuous/programme) = 15/45 W
• frequency range = 70-25000 Hz
• resonance frequency fs = 70 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 93 dB (2,83V; 1m)
• DC resistance Re = 6,9 Ohm
• force factor BL = 5,92 N/A
• voice coil inductance L = 0,0034 mH
• effective piston radiating area Sd = 65 cm²
• effective mechanical mass incl. air load mms = 2,9 g
• equivalent volume of compliance Vas = 9,95 l
• total Q factor Qts = 0,25 (Qms=2,96, Qes=0,27)
• voice coil diameter = 20 mm
• maximum peak linear excursion vibration x_lin = +/- 0,35 mm
• mounting diameter d = 100 mm
• overall diameter d = 142 mm
• mounting depth (not countersunk) t = 61 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 5,3 L volume
from 89/56 Hz (-3dB/-8dB)

recommended cabinet 2:
22 L volume bass reflex cabinet
with HP70 reflex tube, 18 cm long.
from 41/35 Hz (-3dB/-8dB).

Fostex FW 137  

order no. fx-fw137

- not available

14 cm bass driver with high quality cone. The driver is magnetically shielded.

• power handling (continuous/programme) = 25(75 W
• frequency range = 55-8000 Hz
• resonance frequency fs = 55 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 87 dB (2,83V; 1m)
• DC resistance Re = 7,4 Ohm
• force factor BL = 7,06 N/A
• voice coil inductance L = 0,067 mH
• effective piston radiating area Sd = 95 cm²
• effective mechanical mass incl. air load mms = 11,7 g
• equivalent volume of compliance Vas = 10,202 l
• total Q factor Qts = 0,49 (Qms=3,58, Qes=0,57)
• voice coil diameter = 30,4 mm
• maximum peak linear excursion vibration x_lin = +/- 1 mm
• mounting diameter d = 122 mm
• overall diameter d = 155 mm
• mounting depth (not countersunk) t = 86,8 mm
• mass m = 1,495 kg

PDF data sheet

recommended cabinet 1:
closed cabinet with 2,8 L volume
from 157/99 Hz (-3dB/-8dB)

recommended cabinet 2:
5,3 L volume bass reflex cabinet
with HP50 reflex tube, 13 cm long.
from 103/76 Hz (-3dB/-8dB).

Fostex FF 165K  

order no. fx-ff165k

- not available

15 cm full range driver with high quality cone.

• power handling (continuous/programme) = 22/70 W
• frequency range = 45-17000 Hz
• resonance frequency fs = 40 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94 dB (2,83V; 1m)
• DC resistance Re = 7,4 Ohm
• effective piston radiating area Sd = 133 cm²
• effective mechanical mass incl. air load mms = 7,8 g
• equivalent volume of compliance Vas = 48,2 l
• total Q factor Qts = 0,21 (Qms=10,92, Qes=0,21)
• maximum peak linear excursion vibration x_lin = +/- 0,3 mm
• mounting diameter d = 143,4 mm
• overall diameter d = 157,4 mm
• mounting depth (not countersunk) t = 73,7 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 2,9 L volume
from 187/118 Hz (-3dB/-8dB)

recommended cabinet 2:
5,9 L volume bass reflex cabinet
with HP70 reflex tube, 16 cm long.
from 120/89 Hz (-3dB/-8dB).

Fostex FE 166E  

order no. fx-fe166e

- not available

15 cm full range driver with high quality cone.

• power handling (continuous/programme) = 22/65 W
• frequency range = 50-22000 Hz
• resonance frequency fs = 50 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94 dB (2,83V; 1m)
• DC resistance Re = 7,1 Ohm
• force factor BL = 8,33 N/A
• effective piston radiating area Sd = 132,7 cm²
• effective mechanical mass incl. air load mms = 6,85 g
• equivalent volume of compliance Vas = 45,45 l
• total Q factor Qts = 0,21 (Qms=3,89, Qes=0,22)
• voice coil diameter = 25 mm
• maximum peak linear excursion vibration x_lin = +/- 0,6 mm
• mounting diameter d = 146 mm
• overall diameter d = 166 mm
• mounting depth (not countersunk) t = 73,2 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 5,3 L volume
from 133/84 Hz (-3dB/-8dB)

recommended cabinet 2:
16 L volume bass reflex cabinet
with HP70 reflex tube, 10 cm long.
from 72/56 Hz (-3dB/-8dB).

Fostex FE 167E  

order no. fx-fe167e

- not available

15 cm full range driver with high quality cone.

• power handling (continuous/programme) = 33/65 W
• frequency range = 51,5-22000 Hz
• resonance frequency fs = 51,5 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 94 dB (2,83V; 1m)
• DC resistance Re = 7,1 Ohm
• force factor BL = 6,82 N/A
• effective piston radiating area Sd = 132,7 cm²
• effective mechanical mass incl. air load mms = 6,68 g
• equivalent volume of compliance Vas = 35,94 l
• total Q factor Qts = 0,31 (Qms=4,63, Qes=0,33)
• voice coil diameter = 25 mm
• maximum peak linear excursion vibration x_lin = +/- 0,6 mm
• mounting diameter d = 144 mm
• overall diameter d = 166 mm
• mounting depth (not countersunk) t = 85 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 5 L volume
from 92/58 Hz (-3dB/-8dB)

recommended cabinet 2:
17 L volume bass reflex cabinet
with HP70 reflex tube, 24 cm long.
from 48/37 Hz (-3dB/-8dB).

Fostex FW 167  

order no. fx-fw167

- not available

17 cm bass driver with high quality cone. The driver is magnetically shielded.

• power handling (continuous/programme) = 34/100 W
• frequency range = 40-8000 Hz
• resonance frequency fs = 40 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 7,1 Ohm
• force factor BL = 8,2 N/A
• voice coil inductance L = 0,071 mH
• effective piston radiating area Sd = 128 cm²
• effective mechanical mass incl. air load mms = 14,9 g
• equivalent volume of compliance Vas = 25,22 l
• total Q factor Qts = 0,35 (Qms=2,6, Qes=0,4)
• voice coil diameter = 35,5 mm
• maximum peak linear excursion vibration x_lin = +/- 1,5 mm
• mounting diameter d = 151 mm
• overall diameter d = 186 mm
• mounting depth (not countersunk) t = 108,1 mm
• mass m = 2,659 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 0,76 L volume
from 189/119 Hz (-3dB/-8dB)

recommended cabinet 2:
1,7 L volume bass reflex cabinet
with HP50 reflex tube, 32 cm long.
from 117/87 Hz (-3dB/-8dB).

Fostex FW 168hp  

order no. fx-fw168hp

- not available

17 cm bass driver with high quality cone.

• power handling (continuous/programme) = 34/100 W
• frequency range = 55-10000 Hz
• resonance frequency fs = 55 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• DC resistance Re = 5,8 Ohm
• effective piston radiating area Sd = 116,87661 cm²
• effective mechanical mass incl. air load mms = 19,5 g
• equivalent volume of compliance Vas = 9,868 l
• total Q factor Qts = 0,23 (Qms=2086, Qes=0,23)
• maximum peak linear excursion vibration x_lin = +/- 1 mm
• mounting diameter d = 146 mm
• overall diameter d = 190 mm
• mounting depth (not countersunk) t = 96 mm
• mass m = 3,55 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 0,53 L volume
from 194/122 Hz (-3dB/-8dB)

recommended cabinet 2:
0,78 L volume bass reflex cabinet
with HP50 reflex tube, 72 cm long.
from 141/104 Hz (-3dB/-8dB).

Fostex FW 168N  

order no. fx-fw168n

- not available

17 cm bass driver with high quality cone.

• power handling (continuous/programme) = 34/100 W
• frequency range = 40-9000 Hz
• resonance frequency fs = 40 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 89 dB (2,83V; 1m)
• DC resistance Re = 5,9 Ohm
• effective piston radiating area Sd = 132,70725 cm²
• effective mechanical mass incl. air load mms = 28 g
• equivalent volume of compliance Vas = 14,25 l
• total Q factor Qts = 0,17 (Qms=15,67, Qes=0,17)
• maximum peak linear excursion vibration x_lin = +/- 0,5 mm
• mounting diameter d = 146 mm
• overall diameter d = 190 mm
• mounting depth (not countersunk) t = 98 mm
• mass m = 3,9 kg

PDF data sheet

recommended cabinet 1:
closed cabinet with 31 L volume
from 68/43 Hz (-3dB/-8dB)

recommended cabinet 2:
124 L volume bass reflex cabinet
with 4x HP100 reflex tube, 47 cm long.
from 33/27 Hz (-3dB/-8dB).

Fostex FX 200  

order no. fx-fx200

- not available

19 cm full range driver with high quality cone.

• power handling (continuous/programme) = 15/45 W
• frequency range = 40-20000 Hz
• resonance frequency fs = 38 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 92 dB (2,83V; 1m)
• DC resistance Re = 7,5 Ohm
• effective piston radiating area Sd = 201 cm²
• effective mechanical mass incl. air load mms = 15,8 g
• equivalent volume of compliance Vas = 82,3 l
• total Q factor Qts = 0,45 (Qms=7, Qes=0,48)
• maximum peak linear excursion vibration x_lin = +/- 1 mm
• mounting diameter d = 183 mm
• overall diameter d = 194 mm
• mounting depth (not countersunk) t = 83 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 2,8 L volume
from 184/116 Hz (-3dB/-8dB)

recommended cabinet 2:
4,2 L volume bass reflex cabinet
with HP50 reflex tube, 12 cm long.
from 134/99 Hz (-3dB/-8dB).

Fostex FF 225K  

order no. fx-ff225k

- not available

19 cm full range driver with high quality cone.

• power handling (continuous/programme) = 31/100 W
• frequency range = 40-14000 Hz
• resonance frequency fs = 38 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 6,3 Ohm
• effective piston radiating area Sd = 222 cm²
• equivalent volume of compliance Vas = 76,41 l
• total Q factor Qts = 0,16 (Qms=3,06, Qes=0,17)
• maximum peak linear excursion vibration x_lin = +/- 0,3 mm
• mounting diameter d = 182 mm
• overall diameter d = 200 mm
• mounting depth (not countersunk) t = 93 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 2,3 L volume
from 179/113 Hz (-3dB/-8dB)

recommended cabinet 2:
3,6 L volume bass reflex cabinet
with HP50 reflex tube, 16 cm long.
from 126/93 Hz (-3dB/-8dB).

Fostex FE 206E  

order no. fx-fe206e

- not available

19 cm full range driver with high quality cone.

• power handling (continuous/programme) = 30/90 W
• frequency range = 39-20000 Hz
• resonance frequency fs = 39 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 6,69 Ohm
• force factor BL = 11,82 N/A
• effective piston radiating area Sd = 206,1 cm²
• effective mechanical mass incl. air load mms = 15,35 g
• equivalent volume of compliance Vas = 54,53 l
• total Q factor Qts = 0,17 (Qms=3,73, Qes=0,18)
• voice coil diameter = 35 mm
• maximum peak linear excursion vibration x_lin = +/- 1,5 mm
• mounting diameter d = 182 mm
• overall diameter d = 208 mm
• mounting depth (not countersunk) t = 87,5 mm

PDF data sheet

recommended cabinet 1:
closed cabinet with 5,7 L volume
from 119/75 Hz (-3dB/-8dB)

recommended cabinet 2:
14,4 L volume bass reflex cabinet
with HP70 reflex tube, 16 cm long.
from 70/53 Hz (-3dB/-8dB).

Fostex FE 207E  

order no. fx-fe207e

- not available

20 cm full range driver with high quality cone.

• power handling (continuous/programme) = 45/90 W
• frequency range = 39-20000 Hz
• resonance frequency fs = 39 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 95 dB (2,83V; 1m)
• DC resistance Re = 6,73 Ohm
• force factor BL = 9,41 N/A
• effective piston radiating area Sd = 206,1 cm²
• effective mechanical mass incl. air load mms = 15,02 g
• equivalent volume of compliance Vas = 56,25 l
• total Q factor Qts = 0,26 (Qms=3,86, Qes=0,28)
• voice coil diameter = 35 mm
• maximum peak linear excursion vibration x_lin = +/- 1,5 mm
• mounting diameter d = 185 mm
• overall diameter d = 208 mm
• mounting depth (not countersunk) t = 104 mm

PDF data sheet

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Fostex PS 200  

order no. fx-ps200

- not available

13 cm full range driver with high quality cone.

• power handling (continuous/programme) = 40/80 W
• frequency range = 100-18000 Hz
• resonance frequency fs = 100 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 6,7 Ohm
• effective piston radiating area Sd = 221,62896 cm²
• effective mechanical mass incl. air load mms = 11 g
• equivalent volume of compliance Vas = 17,3 l
• total Q factor Qts = 0,86 (Qms=10,72, Qes=0,94)
• maximum peak linear excursion vibration x_lin = +/- 1,3 mm
• overall diameter d = 209,6 mm
• mounting depth (not countersunk) t = 94,5 mm
• mass m = 2,4 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 2,5 L volume
from 114/72 Hz (-3dB/-8dB)

recommended cabinet 2:
4,8 L volume bass reflex cabinet
with HP70 reflex tube, 63 cm long.
from 75/55 Hz (-3dB/-8dB).

Fostex FW 208N  

order no. fx-fw208n

- not available

21 cm bass driver with high quality cone.

• power handling (continuous/programme) = 34/100 W
• frequency range = 29-5000 Hz
• resonance frequency fs = 29 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• DC resistance Re = 5,8 Ohm
• effective piston radiating area Sd = 206,08101 cm²
• effective mechanical mass incl. air load mms = 40 g
• equivalent volume of compliance Vas = 43,42 l
• total Q factor Qts = 0,21 (Qms=13,2, Qes=0,21)
• maximum peak linear excursion vibration x_lin = +/- 6,5 mm
• mounting diameter d = 182 mm
• overall diameter d = 230 mm
• mounting depth (not countersunk) t = 108,76 mm
• mass m = 4,62 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 23 L volume
from 79/50 Hz (-3dB/-8dB)

recommended cabinet 2:
57 L volume bass reflex cabinet
with 2x HP100 reflex tube, 38 cm long.
from 47/36 Hz (-3dB/-8dB).

Fostex FW 305  

order no. fx-fw305

- not available

30 cm bass driver with high quality cone.

• power handling (continuous/programme) = 40/125 W
• frequency range = 25-3500 Hz
• resonance frequency fs = 25 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 95 dB (2,83V; 1m)
• DC resistance Re = 6,6 Ohm
• effective piston radiating area Sd = 530,829 cm²
• effective mechanical mass incl. air load mms = 55 g
• equivalent volume of compliance Vas = 254 l
• total Q factor Qts = 0,25 (Qms=2,73, Qes=0,28)
• maximum peak linear excursion vibration x_lin = +/- 4,8 mm
• mounting diameter d = 278 mm
• overall diameter d = 312 mm
• mounting depth (not countersunk) t = 120,5 mm
• mass m = 5,0 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 148 L volume
from 48/31 Hz (-3dB/-8dB)

recommended cabinet 2:
591 L volume bass reflex cabinet
with 4x HP100 reflex tube, 11 cm long.
from 23/19 Hz (-3dB/-8dB).

Fostex FW 405N  

order no. fx-fw405n

- not available

38 cm bass driver with high quality cone.

• power handling (continuous/programme) = 50/150 W
• frequency range = 30-2500 Hz
• resonance frequency fs = 27 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 92,5 dB (2,83V; 1m)
• DC resistance Re = 6,9 Ohm
• force factor BL = 15,7 N/A
• voice coil inductance L = 0,64 mH
• effective piston radiating area Sd = 890 cm²
• effective mechanical mass incl. air load mms = 100,8 g
• equivalent volume of compliance Vas = 392,5 l
• total Q factor Qts = 0,45 (Qms=6,76, Qes=0,478)
• voice coil diameter = 80 mm
• maximum peak linear excursion vibration x_lin = +/- 7,9 mm
• mounting diameter d = 350 mm
• overall diameter d = 395 mm
• mounting depth (not countersunk) t = 180 mm
• mass m = 10 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 109 L volume
from 47/30 Hz (-3dB/-8dB)

recommended cabinet 2:
361 L volume bass reflex cabinet
with 2x HP100 reflex tube, 11 cm long.
from 25/19 Hz (-3dB/-8dB).

Fostex FW 405  

order no. fx-fw405

- not available

38 cm bass driver with high quality cone.

• power handling (continuous/programme) = 50/150 W
• frequency range = 20-2500 Hz
• resonance frequency fs = 20 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 6,8 Ohm
• effective piston radiating area Sd = 891,8005725 cm²
• effective mechanical mass incl. air load mms = 125 g
• equivalent volume of compliance Vas = 595 l
• total Q factor Qts = 0,34 (Qms=4,99, Qes=0,36)
• maximum peak linear excursion vibration x_lin = +/- 7,0 mm
• mounting diameter d = 354 mm
• overall diameter d = 395 mm
• mounting depth (not countersunk) t = 140,4 mm
• mass m = 7,8 kg

PDF data sheet

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Fostex FW 800N  

order no. fx-fw800n

- not available

78 cm bass driver with high quality cone.

• power handling (continuous/programme) = 150/450 W
• frequency range = 18-1500 Hz
• resonance frequency fs = 18 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 96 dB (2,83V; 1m)
• DC resistance Re = 6,8 Ohm
• effective piston radiating area Sd = 4014,3943125 cm²
• effective mechanical mass incl. air load mms = 440 g
• equivalent volume of compliance Vas = 3201,14 l
• total Q factor Qts = 0,7 (Qms=8,5, Qes=0,76)
• maximum peak linear excursion vibration x_lin = +/- 2,3 mm
• mounting diameter d = 748 mm
• overall diameter d = 800 mm
• mounting depth (not countersunk) t = 291 mm
• mass m = 20,7 kg

PDF data sheet

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Fostex H 200  

order no. fx-h200

- not available

.

PDF data sheet

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Fostex H 300  

order no. fx-h300

- not available

.

PDF data sheet