M21WG-09-08
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 |
