I'm glad Rhino's problem is improved, but I'm very dubious about RCA filters. If his music contains a thump, will he be able to hear it now? The only "filter" that I'd recommend is a common mode choke, but they have will not help much on low frequencies and have to be made very carefully to avoid loss at high frequencies and intermodulation distortion on loud signals.

Below is a repost of a thump related message I sent in the "Feedback>>Bug Reports>>Low battery interrupt" thread. It's a good thread to check out (especially Hugo's posts). Sure enough, he soon found that the constant voltage line was not connected.

If the remote line is working correctly, the amp should be off when the constant line is powered up. Hope this helps.



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A correct car installation shouldn't thump your speakers. I can rip and jam my empeg in and out of my Carrera with wild abandon. A friend
of mine has a thumping installation (more like a gunshot!). After swapping empegs and finding his car thumped with either, we took an
empeg to the lab bench with a spare docking sled I happened to have laying around. We hooked up the RCAs to an amplifier which did not
shut down in response to the empeg's remote line and found that as long as the yellow "Permanent power input" line was hot, you could
flicker the orange "Ignition sense input" recklessly without a thump. If you connect the AC adapter or fiddle with the yellow wire, it thumps
mightily. Interestingly, the yellow input is not necessary to run the empeg, but if you don't use it, you will get a thump when you light up the
orange line. Hope this helps. Also check out Hugo's earlier posts on thresholds. Very interesting!

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-jim <MkII:080000260 18G blue>