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Vifa M21WO-39-08 Woofer

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Classic 8" paper cone woofer.


The Vifa M21WO-39-08 is a high quality bass speaker featuring a magnesium chassis and a coated pulp cone.

This is a very highly regarded 'old school' drive unit with a text book frequency response of ± 1dB between 120-900 Hz and a useable upper extension to just above 2.5 kHz, still within 3dB.

Now made by Scanspeak in Denmark using the original Vifa tooling.

Key Features:

  • Classic pulp response curve & sound
  • Critically treated NRSC pulp cone
  • Low loss linear rubber suspension
  • Lightweight magnesium chassis
  • Huge vented magnet system

Basic parameters:

Resonant frequency (fs) 28 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 1.97
DC resistance (Re) 5.5 Ω
Electrical Q factor (Qes) 0.35
RMS power handling 80 W
Total Q factor (Qts) 0.30
Sensitivity (2.83V/1m) 90 dB
Equivalent volume (Vas) 105L
Chassis diameter 215 mm

Here's the full datasheet:

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