Discoloured cone on B&W DM601 S2 replacement driver

[NiceCupOfTea]

Bit of an odd one this - I have a pair of B&W 601S2 speakers and one had a blown driver - I bought one on ebay but weirdly it's a much darker colour (they are yellow kevlar).

I wondered if it was from a smoker's house, but it doesn't smell. Seems to work fine. Would it be possible to clean? Anybody seen anything like this before? I know I could stick the covers on but it's besides the point really!

[kingston12]

I used to have 603S3s and the cones were much darker than those on the same models that I had seen in the shops. It didn't matter in my case as they were both the same.

If you are sure it is a genuine cone, the only option might be to buy another one to match.

[Crackie]

Genuine Kevlar drivers will change colour over time, darkening from pale yellow taking on a brown/orange cast; the governing factor is how much sunlight ( UV ) they're exposed to. Over time most polymers tend to degrade in sunlight unless they have UV stabilisers added but light coloured polymers, like Kevlar, degrade most.

Kevlar in its raw state
https://www.google.co.uk/search?hl=en&site=img...

UV degradation...........Kevlar gets a specific mention.
http://en.wikipedia.org/wiki/UV_degradation

Edited by Crackie on Thursday 7th May 20:13

[NiceCupOfTea]

Thanks chaps, covers on for now and wait for another driver to come up on ebay!

[StuntmanMike]

Go on ebay now, there is a single 601 for sale at 22 pounds.
Well it will match one of yours.
No link sorry , I'm on my phone.

[StuntmanMike]

P.M sent.

[moles]

I had the same b&w sell them direct they were not too expensive either i bought a tweeter for a centre speaker that a ebayer sold me but neglected to say one of their kids had smashed in with a finger!. About £29 delivered 3 years ago.

[NiceCupOfTea]

StuntmanMike> unfortunately it turned out to be an S1 - but thanks anyway.

Moles> Good call - B&W confirm they can supply for £60 inc VAT/delivery.