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Discussion Starter #1 (Edited)
Full PDF report attached.

Driver:
Scanspeak Discovery 18w/4434g00
Scanspeak Discovery 18W/4434G-00, 7" Midwoofer, 4 ohm: Madisound Speaker Store

http://www.scan-speak.dk/datasheet/pdf/18w-4434g00.pdf

Picture:
(stock)


Impedance and T/S Parameters:



  • Re = 3.0567 ohms
  • Fs = 50.3839 Hz
  • Zmax = 56.6657 ohms
  • Qes = 0.4413
  • Qms = 7.7389
  • Qts = 0.4175
  • Le = 0.2912 mH (at 1 kHz)
  • Diam = 131.7625 mm ( 5.1875 in )
  • Sd =13635.5786 mm^2( 21.1352 in^2)
  • Vas = 18.0378 L ( 0.6370 ft^3)
  • BL = 5.6606 N/A
  • Mms = 14.6112 g
  • Cms = 682.9219 uM/N
  • Kms = 1464.2963 N/M
  • Rms = 0.5977 R mechanical
  • Efficiency = 0.4913 %
  • Sensitivity= 88.9311 dB @1W/1m
  • Sensitivity= 93.1095 dB @2.83Vrms/1m
Klippel 10% Distortion Xmax Parameters:
  • X Bl @ Bl min=82% 4.1 mm
  • X C @ C min=75% 2.8 mm

Sample Klippel Data:











 

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