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<blockquote data-quote="konechiwa" data-source="post: 4755021" data-attributes="member: 568044">So for everyone that has looked at the old thread, I made a new one, because I now have a completely new problem.first off, for all those who want to know the backstory, cliffs:1) i hit a pothole2) HU now says I am using some telephone feature, which i do not have hooked up.3) sub now plays very quietly, no change in wiring or anything.So I did a little troubleshooting...here is what I found:When the RCA&#039;s are plugged into the Sub Pre-Out, all speakers play quiter (tested my rear speakers on Sub-Pre Out). They play quiter.Put the Same RCA&#039;s onto my Rear Pre-Out, same settings, on my rear speakers. Plays normal level, everything is fine, except for I get a nasty case of alternator whine, coming ONLY from the rear speakers.I had this problem before, and I grounded my HU manually, using a 16gauge wire connected to the metal of the chassis with the metal of the HU body.I&#039;m thinking that my HU is completely f&#039;d.After lunch I&#039;m going to switch RCA&#039;s (i have a 4 channel RCA from Knu, 4 RCA plugs) see if that changes anything. I highly doubt it, but it seems to me like I need a New HU......which I&#039;m not going to do because I am taking out my system in a couple of weeks because I&#039;m giving the car to my dad.Any other suggestions so i don&#039;t have to drive to work everyday with no music?</blockquote>

[QUOTE="konechiwa, post: 4755021, member: 568044"] So for everyone that has looked at the old thread, I made a new one, because I now have a completely new problem. first off, for all those who want to know the backstory, cliffs: 1) i hit a pothole 2) HU now says I am using some telephone feature, which i do not have hooked up. 3) sub now plays very quietly, no change in wiring or anything. So I did a little troubleshooting...here is what I found: When the RCA's are plugged into the Sub Pre-Out, all speakers play quiter (tested my rear speakers on Sub-Pre Out). They play quiter. Put the Same RCA's onto my Rear Pre-Out, same settings, on my rear speakers. Plays normal level, everything is fine, except for I get a nasty case of alternator whine, coming ONLY from the rear speakers. I had this problem before, and I grounded my HU manually, using a 16gauge wire connected to the metal of the chassis with the metal of the HU body. I'm thinking that my HU is completely f'd. After lunch I'm going to switch RCA's (i have a 4 channel RCA from Knu, 4 RCA plugs) see if that changes anything. I highly doubt it, but it seems to me like I need a New HU... ...which I'm not going to do because I am taking out my system in a couple of weeks because I'm giving the car to my dad. Any other suggestions so i don't have to drive to work everyday with no music? [/QUOTE]

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