Replacement 8 inch drive unit for Heybrook speakers

Product no.: HEYBROOKW200

Not in stock, but can be supplied very quickly.


Price, plus shipping

Available delivery methods: Customer pickup, European Airmail small packet, Fixed price UK only delivery £12.95, Hermes delivery

Rated power 50 W

Maximum power 80 W

Nominal impedance Z 8 Ohm

Frequency response fu–8000 Hz (fu: Lower cut-off frequency depending on cabinet) .

Mean sound pressure level 88 dB (1 W/1 m)

Opening angle (-6 dB) 49°/4000 Hz

Excursion limit +/−10 mm

Resonance frequency fs 46 Hz Magnetic induction 1.0 T

Magnetic flux 400 μWb

Height of front pole-plate 5 mm

Voice coil diameter 25 mm Height of winding 9 mm

Cutout diameter 185 mm

Net weight 1.045 kg

D.C. resistance Rdc 6.8 Ohm

Mechanical Q factor Qms 3.2

Electrical Q factor Qes 0.79

Total Q factor Qts 0.63

Equivalent volume Vas 51 l

Effective piston area Sd 207 cm²

Dynamically moved mass Mms 14 g

Force factor Bxl 5.9 Tm

Inductance of the voice coil L


These drive units are NOT a direct drop in replacement. The original basket size was slightly greater in diameter, so you will need some DIY skill to mount these in the cabinet. Two methods have been used though, centring the driver and refitting woodscrews if there is enough wood available and the other way involves cutting the basket edge to make tabs for mounting.


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