Question about KEF Audio PSW 1000 Subwoofer
When my sub is not in use it makes a strange burbling noise which doesn't seem to come from interference - could it be the power caps? theres 2x 10000uf and two smaller 300uf near the outlets. also it does sound wooly and not tight but that could be my room - it's only small! The phase shift pot minimises it at 180'. I don't know how old it is-? bought it on ebay a year ago. It started making the noise two months after i bought it. serial bar code is 992071g. I hope there is a solution, can you help? Kind regards, Duds
You can simply and easily replace 3 capacitors on the main amplifier board (c58 - 47uF 63v or 100v) + (c52 & c53 - 220uF 25v) but stand them away from the board on the length of the capacitor leads to prevent them from absorbing heat from surrounding hot components (with heat shrink tubing to prevent shorting)
these are usually the cause of most problems with KEF PSW subs, as for it sounding wooly, this is just the way it is, mine is the same.
Posted on Nov 07, 2011
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Posted on Jan 02, 2017
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