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Sub install problem

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Old Oct 18, 2009 | 02:11 PM
  #1  
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Default Sub install problem

Problem -

Sub does not sound right
Sub thumps when amp turns off
When volume is all the way down on the head unit i still hear a steady low vibration from the sub
Sub freaks out when volume is up


Here is what I am working with -


JVC Arsenal KD-AR7000
Kicker KX600.4
10" JL in a stealth box
Stock monsoon amp is running all the stock speakers, woofers, and tweeters


Setup -


I had this same setup in my camaro and I am currently transplanting it into my trans am.

In the camaro I had 4 speakers wired to AMP1 of the Kicker, and the sub run off AMP2 of the kicker.

In the trans am I am only using the amp to run the sub. Thus I am only using AMP2. I have the sub bridged using L+ and R-.

I have checked to make sure I am properly grounded and that the sub is hooked up with + to + and - to -


What should I try next to troubleshoot this problem?


Thanks!

Last edited by sixtyfive; Oct 20, 2009 at 08:54 AM.
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Old Oct 18, 2009 | 10:13 PM
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Possible bad ground, I've seen that a few times with a bad ground.
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Old Oct 18, 2009 | 10:19 PM
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It happened to me in my camaro and it was due to a bad ground. These are some of the hardest cars to do a system in.
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Old Oct 18, 2009 | 10:44 PM
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That and running your power wire along side of your RCA cables will casue this too
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Old Oct 19, 2009 | 10:06 AM
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Thanks guys, Ill try grounding to a new spot tonight.

I have power run down passenger side and RCA's down drivers side.
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Old Oct 19, 2009 | 10:15 AM
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Is your amp turn on hooked up to your remote turn on off the HU or off the switched ignition? This was my problem for a while. Needs to be HU amp remote turn on.
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Old Oct 19, 2009 | 01:21 PM
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Originally Posted by sixtyfive
Thanks guys, Ill try grounding to a new spot tonight.

I have power run down passenger side and RCA's down drivers side.
I tucked in the wiring under the center console(drivers side), then under the carpet. You can run it along the the side panels too.
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Old Oct 19, 2009 | 10:15 PM
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Originally Posted by b's90cam
Is your amp turn on hooked up to your remote turn on off the HU or off the switched ignition? This was my problem for a while. Needs to be HU amp remote turn on.
I have the amp turn on wire run to the remote turn on\off on the HU. Is that how it worked for you?
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Old Oct 19, 2009 | 10:46 PM
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Originally Posted by bmnicolosi
Possible bad ground, I've seen that a few times with a bad ground.
Moved my ground from the bracket below the antenna motor, to the sheet metal of the wheel well.



Made sure I sanded it good.



Here is how my amp is setup. If i turn the gain and bass boost down the idle sound (when HU volume is at 0) is less noticable


Last edited by sixtyfive; Oct 20, 2009 at 08:51 AM.
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Old Oct 20, 2009 | 08:55 AM
  #10  
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Sub works fine when volume on HU is below 19.


It was freaking out when volume was at about 26 out of 50ish.
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Old Oct 20, 2009 | 01:53 PM
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try changing to amp1 on the amp to see if it continues
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Old Oct 21, 2009 | 12:01 AM
  #12  
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Originally Posted by bmnicolosi
try changing to amp1 on the amp to see if it continues
That did the trick! I am guessing maybe you have to use Amp1 before using Amp2?

I love easy fixes
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