BMS 8N515

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recommended cabinet 1:
closed cabinet with 1,5 L volume
from 233/147 Hz (-3dB/-8dB)
 
recommended cabinet 2:
4,5 L volume bass reflex cabinet
with HP70 reflex tube, 12 cm long.
from 129/99 Hz (-3dB/-8dB).

BMS 8N515       order no. ah-BMS8N515L       EUR 311,00 excl. VAT: € 261.34 / $ 305.77
20 cm midrange driver with paper cone. The magnet system is based on Neodymium technology.
  • power handling (continuous/programme) = 100/200 W
  • frequency range = 80-3000 Hz
  • resonance frequency fs = 87,7 Hz
  • impedance R = 8 Ohm
  • sound pressure level SPL = 96 dB (2,83V; 1m)
  • DC resistance Re = 5,4 Ohm
  • force factor BL = 13,8 N/A
  • voice coil inductance L = 0,2 mH
  • effective piston radiating area Sd = 200 cm2
  • effective mechanical mass incl. air load mms = 20 g
  • equivalent volume of compliance Vas = 11,04 l
  • total Q factor Qts = 0,3 (Qms=4,34, Qes=0,32)
  • voice coil diameter = 52 mm
  • maximum peak linear excursion vibration xlin = +/- 4 mm
  • mounting diameter d = 182 mm
  • overall diameter d = 205 mm
  • mounting depth (not countersunk) t = 95 mm
  • mass m = 1,98 kg
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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