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Sub is tapping

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Old 03-08-2008 | 08:38 PM
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Default Sub is tapping

So I wired it all up and it sounds really nice. Still got to finish coving the box. Sounds good and everything untill I start the car. Once running the sub started to tap. It does that constantly while the car is running. Im pretty sure it did it while the car was off too but I cant remember form being in a hurry to get to work. Once I got to work I just ripped out the remote wire becasue I didnt have any tools to take it out. But do any of you have an idea of what the tapping was?
Old 03-09-2008 | 12:24 AM
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Anybody?
Old 03-09-2008 | 12:32 AM
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I`m gonna take a stab at this. Sounds, maybe, like a bad ground some where and/or alternator whine. Where are your RCA`s routed? Are they routed along with your power cable for the amp? What is your headunit ground like and your amp ground?
Old 03-09-2008 | 01:54 AM
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if it doesnt do it when the car is off its alt wine

ive never had alt wine with a sub though

more specifics on what you got radio amp subs wiring where its all routed etc will help
Old 03-09-2008 | 04:11 PM
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I had that problem and it turns out that it was my RCA's I replaced them and I'm good to go.
Old 03-09-2008 | 10:48 PM
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Ok here is how it is ran.

power wire is ran through the firewall on pas. side.
It is grounded on the bolt that holds the back seatbelt on.
Remote wire is ran up to the front to the HU with the power wires.
RCAs are ran up the middle, around the sub, and then ran through the back carpet to the amp.
The speaker wire is ran from the other side with the amp along the rca plugs.

Old 03-09-2008 | 10:49 PM
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Maybe I shouldnt run the RCAs with the speaker wire?
Old 03-09-2008 | 11:07 PM
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What kind of RCA`s are you using? Do you get any headlight dimming when the bass hits?
Old 03-10-2008 | 12:12 AM
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IDK it was in a kit I bought off ebay And the headlight def wont dim when I am only pushing like 75watts
Old 03-10-2008 | 12:16 AM
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Could possibly be cheap rca`s. Can`t really tell because we don`t know everything about your system. Why don`t you post up all the different components you have.
Old 03-10-2008 | 12:18 AM
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Alpine HU not sure on modle number.
Off brand wire kit
Eclipse EA2000 amp
JL sub
Old 03-10-2008 | 12:26 AM
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Just to let you know it all worked fin in my camaro when I had it. Now it is screwing up.
Old 03-10-2008 | 01:58 AM
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could deff be rca's or a crappy ground
Old 03-10-2008 | 03:13 AM
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what size is your power cable and your ground cable. I never liked putting the ground on the seat belt mount like that. I prefer to mount it in it`s own spot.
Old 03-10-2008 | 07:31 AM
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The kit said it was 8g. But I am not sure. Its probably like triple the size of the speaker wire. Ill post a pic of it when I get home.
Old 03-10-2008 | 07:47 AM
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I just checked and it is 8g. Ill try a different ground and different RCAs. You think running the RCAs next to the speaker wire will mess it up?
Old 03-10-2008 | 09:48 AM
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Running RCA`s along with speaker wire is fine. What is your headunit grounded to or is it the stock head unit?
Old 03-10-2008 | 10:39 AM
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id redo ur amp ground before the rcas. sand down to bare metal and use a nut and bolt or self tappin screw
Old 03-10-2008 | 02:23 PM
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ok rewired everything. I went out and bought new RCAs and re-grounded the amp. Everything is fine now! Thanks!




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