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Prius High-Pitch Sound Post-Install
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<blockquote data-quote="pokeyouindaeye" data-source="post: 8710751" data-attributes="member: 678644"><p>Update, I've tried a few more things:</p><p></p><p>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</p><p></p><p>2. move the ground to a chassis point --> no change, or very minor change -- but, wasn't screwed down, just held to chassis</p><p></p><p>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?</p><p></p><p>4. tried moving the amp a few more feet away from the hybrid battery --> no change, or very minor</p><p></p><p>Tried two different brands of group loop isolator in front of the amp... no change.</p><p></p><p>Hmmmm, didn't try:</p><p>- grounding HU chassis</p><p>- shielded twisted-pair RCAs (note: the HU is single-end output, the amp is differential input)</p><p></p><p></p><p>Any ideas?</p></blockquote><p></p>
[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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