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Yes, I noticed the sticky stuff on the midrange drivers (and a few cat hairs when I drove them sans grilles). Memo to self: Grilles ON!

Re spikes: Thanks for the corner block advice in the...

Thanks, On3....! And you other guys for confirming the fix.

Checking the interconnect on the problem speaker didn't do it, but (thanks to a later post) when i wiggled the other speaker's...

Hi,

Newbie here, but not to Polk Audio products.

I'm the original owner of a pair of SDA II speakers bought overseas in 1985.

The left speaker is perfect with audio in all drivers and the...