Hi Russ,

I followed your suggestions of grounding both ends of the Teleporters and using shielded cat 6 cable.

It certainly has improved the situation, but by no means has it eliminated the intermittent crackles when I turn a halogen light, or worse, a ceiling fan, washer or dryer on.

Usually the Teleporters mute the signal (or my amps do), but every so often a nasty spike gets thru and blows a tweeter.

Any ideas?

My suggestion of galvanic digital isolators is all I seem to be left with at this point...

Thanks,

Poss