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

Eighteen Sound 15 CX 1000
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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 605,05 excl. VAT: € 508.45 / $ 610.27

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 xlin = +/- 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

Eighteen Sound 12 NCX 750
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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 569,28 excl. VAT: € 478.39 / $ 574.19

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 xlin = +/- 5,5 mm
  • mounting diameter d = 280 mm
  • overall diameter d = 310 mm
  • mounting depth (not countersunk) t = 148 mm
PDF data sheet

Eighteen Sound 15 NCX 750
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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 598,52 excl. VAT: € 502.96 / $ 603.68

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 xlin = +/- 5,5 mm
  • mounting diameter d = 360 mm
  • overall diameter d = 393 mm
  • mounting depth (not countersunk) t = 185 mm
PDF data sheet

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.

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