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<blockquote data-quote="pokeyouindaeye" data-source="post: 8710751" data-attributes="member: 678644">Update, I&#039;ve tried a few more things:1. snip the HU ground and go over-seat to the amp&#039;s ground terminal --&gt; no change, or very minor change -- was a good 18awg copper run2. move the ground to a chassis point --&gt; no change, or very minor change -- but, wasn&#039;t screwed down, just held to chassis3. try a diff. pair of RCAs over the seat --&gt; no change, or very minor change -- but, these were basic RCAs, unshielded DJ, not twisted/shielded... however, run over the seats from an open dash, shouldn&#039;t that eliminate noise?4. tried moving the amp a few more feet away from the hybrid battery --&gt; no change, or very minorTried two different brands of group loop isolator in front of the amp... no change.Hmmmm, didn&#039;t try:- grounding HU chassis- shielded twisted-pair RCAs (note: the HU is single-end output, the amp is differential input)Any ideas?</blockquote>

[QUOTE="pokeyouindaeye, post: 8710751, member: 678644"] Update, I've tried a few more things: 1. snip the HU ground and go over-seat to the amp's ground terminal --> no change, or very minor change -- was a good 18awg copper run 2. move the ground to a chassis point --> no change, or very minor change -- but, wasn't screwed down, just held to chassis 3. try a diff. pair of RCAs over the seat --> no change, or very minor change -- but, these were basic RCAs, unshielded DJ, not twisted/shielded... however, run over the seats from an open dash, shouldn't that eliminate noise? 4. tried moving the amp a few more feet away from the hybrid battery --> no change, or very minor Tried two different brands of group loop isolator in front of the amp... no change. Hmmmm, didn't try: - grounding HU chassis - shielded twisted-pair RCAs (note: the HU is single-end output, the amp is differential input) Any ideas? [/QUOTE]

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