All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
M21WG-09-08
Categories: 8-10 inch Bass Speakers Vifa Classic Drive Units
UK STOCK ITEM
Direct replacement for:
Heybrook HB1, JPW P1, JPW AP2, JPW AP3, Snell type K.
This classic 8" bass unit is designed for sealed cabinets of between 20 - 40 litres. It features a very high compliance suspension (Vas 81 litres), a magnesium chassis and a treated pulp cone. The highish Qms value gives the M21WG-09-08 a lovely open midrange sound hence it's popularity in various successful historic designs. One of the few excellent 8" drivers suitable for 2 way infinite baffle enclosures. New manufacture with improved foam surround.
These units are now manufactured at the Scanspeak facility in Denmark and may be badged as Vifa or Scanspeak.
Resonant frequency (fs) | 38 Hz | Nominal impedance (Zn) | 8 Ω |
Mechanical Q factor (Qms) | 4.9 | DC resistance (Re) | 5.6 Ω |
Electrical Q factor (Qes) | 0.82 | RMS power handling | 50 W |
Total Q factor (Qts) | 0.70 | Sensitivity (2.83V/1m) | 90 dB |
Equivalent volume (Vas) | 81L | Chassis diameter | 215 mm |
Bought this to replace a damaged woofer in my Heybrook HB1 speakers, which I bought in 1985. The replacement is identical to the original and is a perfect fit in the cabinet. Communication was excellent, delivery to Australia was fast, and the woofers were very well packaged. Great service from Will and Caroline at Willys-Hifi. Highly recommend.
Thanks for the review David!
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch