Monacor SPX-20M

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recommended cabinet 1:
closed cabinet with 0,06 L volume
from 301/190 Hz (-3dB/-8dB)
 
recommended cabinet 2:
0,24 L volume bass reflex cabinet
with 2cm-Rohr reflex tube, 16 cm long.
from 147/119 Hz (-3dB/-8dB).

Monacor SPX-20M       order no. mo-100930       EUR 47,00 excl. VAT: € 39.50 / $ 45.42
5 cm full range driver with high quality cone. The magnet system is based on Neodymium technology.
  • power handling (continuous/programme) = 15/30 W
  • frequency range = 250-22000 Hz
  • resonance frequency fs = 157 Hz
  • impedance R = 8 Ohm
  • sound pressure level SPL = 87 dB (2,83V; 1m)
  • DC resistance Re = 6,9 Ohm
  • force factor BL = 4,5 N/A
  • voice coil inductance L = 0,13 mH
  • effective piston radiating area Sd = 13 cm2
  • effective mechanical mass incl. air load mms = 1,3 g
  • equivalent volume of compliance Vas = 0,2 l
  • total Q factor Qts = 0,42 (Qms=4,52, Qes=0,46)
  • voice coil diameter = 25 mm
  • maximum peak linear excursion vibration xlin = +/- 0,5 mm
  • mounting diameter d = 51,5 mm
  • overall diameter d = 57 mm
  • mounting depth (not countersunk) t = 37,5 mm
  • mass m = 0,17 kg
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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