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Old 30th May 2007, 11:56 PM   #1
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Default Engine noise

I have a Lanzar 4000 watt 2 channel amp and i am getting engine noise through my speakers does anybody know what can be causing this problem please help
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Old 31st May 2007, 12:18 AM   #2
BWRX is offline BWRX  United States
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Noise from your alternator is being coupled into your signal wires. Do you have the input wiring running right next to the power wire? Is the amp's ground connection electrically and mechanically solid?
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Old 31st May 2007, 12:41 AM   #3
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As stated above make sure you RCA's are NOT near the power wire also good, solid grounds are a must.
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Old 31st May 2007, 12:46 AM   #4
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Pioneer Radio?
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Old 31st May 2007, 04:18 AM   #5
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yes i have an pioneer head unit
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Old 31st May 2007, 05:13 AM   #6
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If your engine noise is very loud, chances are the problem is the shield of your RCA cables have lost their ground refference.

To make sure this is your problem we need to remove our radio from the dash so we can get to the RCA cable that goes to the amp. Then we need to take a length of small wire a couple feet long, we need to ground one end of the wire and with the engine running and noise present, touch the other end of the wire to the outer part of your RCA cable. The shiny part you can still see when the cable is plugged into the deck. This should make a little pop and the noise should go away.

If this gets rid of the noise let me know and we can help you get it repaired.
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Old 31st May 2007, 06:29 AM   #7
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Quote:
Originally posted by I Am An Idiot
If your engine noise is very loud, chances are the problem is the shield of your RCA cables have lost their ground refference.

To make sure this is your problem we need to remove our radio from the dash so we can get to the RCA cable that goes to the amp. Then we need to take a length of small wire a couple feet long, we need to ground one end of the wire and with the engine running and noise present, touch the other end of the wire to the outer part of your RCA cable. The shiny part you can still see when the cable is plugged into the deck. This should make a little pop and the noise should go away.

If this gets rid of the noise let me know and we can help you get it repaired.

tried it and the noise is still there i even tried different rca's my ground wire is an 8 gauge
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Old 31st May 2007, 01:35 PM   #8
zzzzzzz is offline zzzzzzz  Canada
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your ground is bad some where in the car and have you done the big 3 yet ?
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Old 31st May 2007, 02:22 PM   #9
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Quote:
Originally posted by zzzzzzz
your ground is bad some where in the car and have you done the big 3 yet ?

whats the big 3
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Old 31st May 2007, 06:33 PM   #10
y8s is offline y8s  United States
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do you get the noise with just one RCA connected?
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