voice coil rubbing?

Dr.H · 28th January 2009, 08:22 PM

I've noticed that one of the drivers on my speakers (Royd Doublet, 1995) has started to produce a small amount of distortion. CLoser inspection revealed that part of the voice coil seems to be chaffing against the central magnet.

There is no dust cap, by design.
I am tempted to simply use a set of fine needles and physically bend the chaffing part of the VC sorround away from the magnet.

Any thoughts/comments?

hasselbaink · 29th January 2009, 12:25 PM

Try unmounting the woofer and turn it 180 deg. Gravity might solve the problem with the chafing voicecoil.

I had a similar, but much more serious problem with a pair of ATC 15" woofers.

If the chafing is due to overexcursion then the VC could be deformed by contact with the back plate. This could mean serious damage to the VC along with a nonliniear performance.

Best
Kris

Dr.H · 29th January 2009, 01:57 PM

Thanks!

28th January 2009, 08:22 PM	#1
Dr.H diyAudio Member Join Date: Apr 2002	voice coil rubbing? I've noticed that one of the drivers on my speakers (Royd Doublet, 1995) has started to produce a small amount of distortion. CLoser inspection revealed that part of the voice coil seems to be chaffing against the central magnet. There is no dust cap, by design. I am tempted to simply use a set of fine needles and physically bend the chaffing part of the VC sorround away from the magnet. Any thoughts/comments?

29th January 2009, 12:25 PM	#2
hasselbaink diyAudio Member Join Date: Aug 2006 Location: Copenhagen, Frederiksberg	rubbing Try unmounting the woofer and turn it 180 deg. Gravity might solve the problem with the chafing voicecoil. I had a similar, but much more serious problem with a pair of ATC 15" woofers. If the chafing is due to overexcursion then the VC could be deformed by contact with the back plate. This could mean serious damage to the VC along with a nonliniear performance. Best Kris

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29th January 2009, 01:57 PM	#3
Dr.H diyAudio Member Join Date: Apr 2002	Thanks!

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