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View Full Version : Hefty 8" Dual Coil Subwoofer Driver


walpurgis
14-07-2015, 19:38
Dual voicecoil 8" subwoofer drive unit, brand not known. Pretty hefty speaker with a steel chassis and big magnet. Two sets of terminals 4 ohms each, can be wired in series to give 8 ohms. Durable rubber surround and decent paper pulp cone. In good working order. Surplus to requirements, so asking £15 & carriage (UK).

http://i59.tinypic.com/ser5oi.jpg

http://i58.tinypic.com/14alkld.jpg
walpurgis
17-07-2015, 18:01
bump
southall-1998
17-07-2015, 20:30
I could be wrong. Doesn't B&W use a driver like that for their subs?

S.
walpurgis
17-07-2015, 20:48
I could be wrong. Doesn't B&W use a driver like that for their subs?

S.

Well spotted Shane. I thought so too, it does look like it, but as it's not marked I don't know, so I didn't mention it. Nice unit though.
struth
17-07-2015, 20:59
may I ask why would you wish 2 voice coils on a sub? out of interest as not heard of that before Geoff
walpurgis
17-07-2015, 21:05
may I ask why would you wish 2 voice coils on a sub? out of interest as not heard of that before Geoff

One for each channel of a stereo amp giving a 'summed' output. Can be wired in series for single subwoofer amp.
struth
17-07-2015, 21:09
I see, thanks...makes sense. Ive only ever used one in a multichannel
walpurgis
18-07-2015, 21:17
bump
southall-1998
18-07-2015, 21:18
Geoff. Plunk it in yer car boot and play 50 cent!

S.
walpurgis
22-07-2015, 22:36
bump
walpurgis
24-07-2015, 15:03
bump
walpurgis
09-08-2015, 14:01
bump
walpurgis
15-08-2015, 23:33
bump
walpurgis
18-08-2015, 22:56
bump
walpurgis
20-08-2015, 19:51
bump
walpurgis
22-08-2015, 21:06
bump
Macca
22-08-2015, 21:11
Geoff, how well would this work in a 50 litre sealed cab?
walpurgis
22-08-2015, 21:21
Geoff, how well would this work in a 50 litre sealed cab?

Should be OK with correct subwoofer equalisation and if ported maybe a bit of experimental port tuning. I've actually still got a brand new complete Celestion sub amplifier plate/panel I bought to drive this correctly. I'll need to flog that too shortly. I believe (as I think has been mentioned) that this drive unit is from a B&W speaker.
Macca
22-08-2015, 21:25
Dos the amp have equalisation? Just thinking I have a cab cut to take an 8 inch driver.
walpurgis
22-08-2015, 21:30
Dos the amp have equalisation? Just thinking I have a cab cut to take an 8 inch driver.

The amp is fully equalised for sub use, with varying filters etc. I can dig it out tomorrow and take a photo if you like.
Macca
22-08-2015, 21:39
That would be good. How much were you thinking of asking for the set?
walpurgis
22-08-2015, 21:55
I'll PM you Martin.
walpurgis
01-09-2015, 10:12
Sold