SHIPPING TO USA TEMPORARILY SUSPENDED
SHIPPING TO USA TEMPORARILY SUSPENDED
DRIVE UNITS BY MANUFACTURER:
M21WO-39-08
Categories: 8-10 inch Bass Speakers Vifa Classic Drive Units
DISCONTINUED - NO MORE STOCK AVAILABLE.
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.
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 |
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
Been looking for a supplier of replacement drivers for some years.
Willy's HiFi had just the parts at a good price and they arrived in a couple of days.
Excellent service. Even a personal thank you hand written on the invoice.
A quick delivery and the tweeters are perfect on my mission 753 freedom speakers. Easy to fit . Highly recommend.
I’m no expert when it comes to speakers, but after some research (and a strong recommendation from ChatGPT), I went with the SB Acoustics SB65WBAC25-4 as a reference full-range speaker in this size range.
Having now tested them, I can confidently say they’re probably the best speakers I’ve ever owned. The clarity is outstanding—every detail comes through with incredible precision. The bass is surprisingly full and punchy for a speaker this size, and they handle power impressively well. For anyone looking for a high-performance compact full-range driver, these are hard to beat.
Item as described and arrived quickly - and did the job. However, I suggested that anyone replacing speaker foam makes sure they have a very large pair of sharp dressmaking scissors as it was not easy cutting to size without producing a ragged edge (which I managed to hide short of a close inspection)!