All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
P21WO-20-08
NO LONGER AVAILABLE
The Vifa P21WO-20-08 is a high quality bass speaker featuring an 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.
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 |
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
Good service well packed
I've needed something like this for years, fantastic product and a lovely company to deal with. Won't be my last purchase from them
It was a nice experience to send the old filters to the UK (from the Netherlands) and get them surprisingly fast back (taking the overseas shipment into account). At first I did it wrong since I also replaced the drivers that could also be connected in a 4/6 Ohm (double coil). But after correcting and calibrating my receiver the speakers sounded great.
Thanks!
Used in a DIY LS3/5a project, with Morel CAT 298 tweeters and custom crossovers using ClarityCap CSAs. Super pleased with these woofers! I think they synergize well with the “live” thin-wall LS3/5a cabinets. The sound is neither bloated, nor thin, just revealing, spacious, and with very lifelike tone. I’m so happy with the results of this project and had a great buying experience with Willy’s. Thank you!!
I used this in custom LS3/5a speaker enclosures along with Monacor SPH-135AD woofers and custom crossovers using ClarityCap CSAs. The tweeters have a very pure sound, revealing microdetails and having a naturally smooth, response. The sound is never peaky or rough. I’m very happy with my purchase and with the service from Willys. Would buy from again for a future project!