Subwoofer repair

jazko · 16th October 2010, 11:56 PM

Hi everyone, I came across a B&W ASW 4000 subwoofer, driver only. It seems like it's blown (voice coil is fried) . I was wondering if you can tell me where can I send it for repair ? I'm in Salford, Manchester.

Cheers!

chris661 · 17th October 2010, 04:05 PM

If it's an OEM from another company, you might be able to get a recone kit, and DIY.

Apart from that, some shops selling PA gear can repair drivers, but I don't know if they'll be able to repair this particular one.

Another option would be to contact B&W, see what they say.

jazko · 17th October 2010, 08:46 PM

Hi, Chris.

I did contact B&W first. Still no answer, though.
Can you give me some coordinates of those PA shops. It's worth the shot.

Thank you

chris661 · 18th October 2010, 03:50 PM

Speaker Repairs

Anyone know of speaker repair place in/around Manchester?

Speaker Repairs Walsall

Not sure if any of those will be any good, but that's what Google turned out... The guys in the second link seem very helpful, so it might be worth contacting them...

LAJ · 18th October 2010, 04:43 PM

Sometimes you can repair them. Check the tinsel leads going to the terminal strip. If thats OK, carefully remove the dust cover with an exacto knife. The knife blade should be gently inserted parallel with the cone. Do this on a hot day or in a hot room (helps to soften up the glue). Check the connections there where the tinsel leads are soldered to the voice coil. You'll have to scrape some of the glue away to check continuity. If resoldering fixes it, reglue the dust cover to the cone.
While you have the dust cover open, check for a burnt varnish smell. If yes, then the coil is fried. Good luck

jazko · 18th October 2010, 07:17 PM

Chris, thank you a lot !

LAJ - I know that the coil is fried, I checked it with a multimeter and resistance is 0 ohms.

I know that contacting B&W is the best solution, but it turns out they dont even pay attention to emails.

chris661 · 18th October 2010, 07:34 PM

Not a problem. If you have a good experience with the people I've linked to, let me know and I'll bookmark it for recommendation to others...

Chris

jazko · 18th October 2010, 10:54 PM

Well, I've contacted the guys from the second link, but they could not help me. Seems like this is a really rare and hard to repair speaker. I will wait until tomorrow, hopefully some of those PA repair sites can help.

16th October 2010, 11:56 PM	#1
jazko diyAudio Member Join Date: Sep 2009 Location: Manchester	Subwoofer repair Hi everyone, I came across a B&W ASW 4000 subwoofer, driver only. It seems like it's blown (voice coil is fried) . I was wondering if you can tell me where can I send it for repair ? I'm in Salford, Manchester. Cheers!

17th October 2010, 04:05 PM	#2
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 7	If it's an OEM from another company, you might be able to get a recone kit, and DIY. Apart from that, some shops selling PA gear can repair drivers, but I don't know if they'll be able to repair this particular one. Another option would be to contact B&W, see what they say. __________________ "Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html

18th October 2010, 03:50 PM	#4
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 7	Speaker Repairs Anyone know of speaker repair place in/around Manchester? Speaker Repairs Walsall Not sure if any of those will be any good, but that's what Google turned out... The guys in the second link seem very helpful, so it might be worth contacting them... __________________ "Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html

18th October 2010, 07:34 PM	#7
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 7	Not a problem. If you have a good experience with the people I've linked to, let me know and I'll bookmark it for recommendation to others... Chris __________________ "Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html

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17th October 2010, 08:46 PM	#3
jazko diyAudio Member Join Date: Sep 2009 Location: Manchester	Hi, Chris. I did contact B&W first. Still no answer, though. Can you give me some coordinates of those PA shops. It's worth the shot. Thank you

18th October 2010, 04:43 PM	#5
LAJ diyAudio Member Join Date: Mar 2008 Location: Atlanta Ga. USA	Sometimes you can repair them. Check the tinsel leads going to the terminal strip. If thats OK, carefully remove the dust cover with an exacto knife. The knife blade should be gently inserted parallel with the cone. Do this on a hot day or in a hot room (helps to soften up the glue). Check the connections there where the tinsel leads are soldered to the voice coil. You'll have to scrape some of the glue away to check continuity. If resoldering fixes it, reglue the dust cover to the cone. While you have the dust cover open, check for a burnt varnish smell. If yes, then the coil is fried. Good luck

18th October 2010, 07:17 PM	#6
jazko diyAudio Member Join Date: Sep 2009 Location: Manchester	Chris, thank you a lot ! LAJ - I know that the coil is fried, I checked it with a multimeter and resistance is 0 ohms. I know that contacting B&W is the best solution, but it turns out they dont even pay attention to emails.

18th October 2010, 10:54 PM	#8
jazko diyAudio Member Join Date: Sep 2009 Location: Manchester	Well, I've contacted the guys from the second link, but they could not help me. Seems like this is a really rare and hard to repair speaker. I will wait until tomorrow, hopefully some of those PA repair sites can help.

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