B&W DM110 - Woofer sounds nasty, help

MikeHunt79 · 2nd May 2008, 12:17 PM

Ok, I think it's the voicecoil rubbing. It says BZ200 on the woofer unit (it was made in 1984).

I'm getting around 6ohms resistance on the voicecoil, so it's not cooked.

I think the voicecoil is rubbing on the magnet... Is there anyway of fixing this or is it replacement woofer time?

meanman1964 · 2nd May 2008, 01:52 PM

Try with pushing the cone as high as you can.

MikeHunt79 · 2nd May 2008, 05:13 PM

Quote:

Originally posted by meanman1964
Try with pushing the cone as high as you can.

I can actually get the voicecoil to come out if I push it high enough...

It's definately rubbing, I think because the cone it slightly at the wrong angle... If I push down the cone in a certain direction it's smooth.

I've managed to stretch the spider a little and it sounds better as it's now pulling it towards the proper angle...

Is there a proper way of doing this or is there a little trial and error involved?

SGD · 2nd May 2008, 05:56 PM

i have come across drivers where this has occured because gravity and time have taken their toll on the driver, if the problem is solved by turning the driver 180 degrees on it's mounting then i would suggest that is the easiest solution.

if this doesnt work, by far the easiest next course would be to source some replacements from ebay.

2nd May 2008, 12:17 PM	#1
MikeHunt79 diyAudio Member Join Date: Aug 2003 Location: Bristol, UK	B&W DM110 - Woofer sounds nasty, help Ok, I think it's the voicecoil rubbing. It says BZ200 on the woofer unit (it was made in 1984). I'm getting around 6ohms resistance on the voicecoil, so it's not cooked. I think the voicecoil is rubbing on the magnet... Is there anyway of fixing this or is it replacement woofer time?

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2nd May 2008, 01:52 PM	#2
meanman1964 diyAudio Member Join Date: Oct 2006 Location: Belgium the land of chocolate	Try with pushing the cone as high as you can.

2nd May 2008, 05:56 PM	#4
SGD diyAudio Member Join Date: Apr 2008	i have come across drivers where this has occured because gravity and time have taken their toll on the driver, if the problem is solved by turning the driver 180 degrees on it's mounting then i would suggest that is the easiest solution. if this doesnt work, by far the easiest next course would be to source some replacements from ebay.