Horn Driver Horn Mids Woofer5 6 inch woofer 8 inch woofer 10 inch woofer 12 inch woofer 15 inch woofer 18 inch woofer 21 inch woofer Coaxial speaker no longer sold

Eighteen Sound

Eighteen Sound is a designer and manufacturer of high quality professional audio loudspeakers, with advanced development and manufacturing technologies, and located in Reggio Emilia, Italy.ound

Coaxial speaker

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recommended cabinet 1:
closed cabinet with 18 L volume
from 128/81 Hz (-3dB/-8dB)

recommended cabinet 2:
54 L volume bass reflex cabinet
with 2x HP100 reflex tube, 10 cm long.
from 71/54 Hz (-3dB/-8dB).

Eighteen Sound 15 CX 1000

order no. 18s-15cx1000

EUR 623,00 excl. VAT: € 523.53 / $ 623.00

37 cm coax driver with paper cone. The basket is made of die-cast.

power handling (continuous/programme) = 850/1000 W
frequency range = 70-20000 Hz
resonance frequency fs = 48 Hz
impedance R = 8 Ohm
sound pressure level SPL = 95 dB (2,83V; 1m)
DC resistance Re = 5,5 Ohm
force factor BL = 21 N/A
voice coil inductance L = 1,5 mH
effective piston radiating area Sd = 855 cm²
effective mechanical mass incl. air load mms = 85 g
equivalent volume of compliance Vas = 132,5 l
total Q factor Qts = 0,3 (Qms=6, Qes=0,32)
voice coil diameter = 100 mm
maximum peak linear excursion vibration x_lin = +/- 6 mm
mounting diameter d = 353 mm
overall diameter d = 387 mm
mounting depth (not countersunk) t = 218,4 mm
mass m = 14,4 kg

PDF data sheet

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recommended cabinet 1:
closed cabinet with 6,4 L volume
from 183/116 Hz (-3dB/-8dB)

recommended cabinet 2:
16 L volume bass reflex cabinet
with 2x HP100 reflex tube, 22 cm long.
from 107/81 Hz (-3dB/-8dB).

Eighteen Sound 12 NCX 750

order no. 18s-12ncx750

EUR 586,00 excl. VAT: € 492.44 / $ 586.00

30 cm coax driver with paper cone. The basket is made of die-cast. The magnet system is based on Neodymium technology.

power handling (continuous/programme) = 400/800 W
frequency range = 60-20000 Hz
resonance frequency fs = 60 Hz
impedance R = 8 Ohm
sound pressure level SPL = 96,5 dB (2,83V; 1m)
DC resistance Re = 5,2 Ohm
force factor BL = 18 N/A
voice coil inductance L = 0,65 mH
effective piston radiating area Sd = 531 cm²
effective mechanical mass incl. air load mms = 43 g
equivalent volume of compliance Vas = 64 l
total Q factor Qts = 0,26 (Qms=6,3, Qes=0,27)
voice coil diameter = 75 mm
maximum peak linear excursion vibration x_lin = +/- 5,5 mm
mounting diameter d = 280 mm
overall diameter d = 310 mm
mounting depth (not countersunk) t = 148 mm

PDF data sheet

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recommended cabinet 1:
closed cabinet with 36 L volume
from 104/66 Hz (-3dB/-8dB)

recommended cabinet 2:
126 L volume bass reflex cabinet
with 2x HP100 reflex tube, 3 cm long.
from 53/42 Hz (-3dB/-8dB).

Eighteen Sound 15 NCX 750

order no. 18s-15ncx750

EUR 617,00 excl. VAT: € 518.49 / $ 617.00

38 cm coax driver with paper cone. The basket is made of die-cast. The magnet system is based on Neodymium technology.

power handling (continuous/programme) = 400/800 W
frequency range = 55-20000 Hz
resonance frequency fs = 48 Hz
impedance R = 8 Ohm
sound pressure level SPL = 98 dB (2,83V; 1m)
DC resistance Re = 5,3 Ohm
force factor BL = 18 N/A
voice coil inductance L = 0,65 mH
effective piston radiating area Sd = 881 cm²
effective mechanical mass incl. air load mms = 74,5 g
equivalent volume of compliance Vas = 158 l
total Q factor Qts = 0,37 (Qms=7,2, Qes=0,39)
voice coil diameter = 75 mm
maximum peak linear excursion vibration x_lin = +/- 5,5 mm
mounting diameter d = 360 mm
overall diameter d = 393 mm
mounting depth (not countersunk) t = 185 mm

PDF data sheet

Horn Driver Horn Mids Woofer5 6 inch woofer 8 inch woofer 10 inch woofer 12 inch woofer 15 inch woofer 18 inch woofer 21 inch woofer Coaxial speaker no longer sold

The cabinet volume calculations are executed considering an external resistance of 0.3 Ohm. We are using, if no other data is known or available, the information supplied by the manufacturer.

Please note: the frequency response doesn't say much about the cut-off frequency inside the cabinet! Therefore, we mostly give you 2 examples with dimensioning considerations and an indication, how low the loudspeaker will reproduce.