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P21WO-20-08

Vifa P21WO-20-08 Woofer

Classic 8" polypropylene cone woofer.

The Vifa P21WO-20-08 is a high quality bass speaker featuring a alloy chassis and a mica loaded polypropylene cone.

This high performance speaker has been in production for 3 decades and is one of the finest plastic coned drive units ever produced offering a very smooth and extended frequency response in bass reflex designs.

Very highly regarded with a text book frequency response to over 4 kHz; can be used in 2 way designs with a 25mm tweeter.

Suits many classic models including: Mission 770 Freedom, Argonaut, 7SD-89143 / P21WN-15-08.

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

Key Features:

  • Controlled, extended response
  • Mica loaded polypropylene cone
  • Low loss linear rubber suspension
  • Rugged alloy chassis
  • Huge vented magnet system

Basic parameters:

Resonant frequency (fs) 28 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 1.60
DC resistance (Re) 5.7 Ω
Electrical Q factor (Qes) 0.41
RMS power handling 80 W
Total Q factor (Qts) 0.33
Sensitivity (2.83V/1m) 91 dB
Equivalent volume (Vas) 113L
Chassis diameter 215 mm

Here's the full datasheet:

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