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Common places to look for uncommon ground


Reider

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2019 21 vlx. 
 

I have static at no volume and also worse when boat is on.  Where should I be looking to fix the problem. 
 

I’m guessing this is an uncommon ground between black boxes and the amplifiers themselves.  
 

any one have this ?

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Brandonloos21
2 hours ago, Reider said:

2019 21 vlx. 
 

I have static at no volume and also worse when boat is on.  Where should I be looking to fix the problem. 
 

I’m guessing this is an uncommon ground between black boxes and the amplifiers themselves.  
 

any one have this ?

Make sure rcas are not run near speaker wire

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O

On 2/1/2021 at 5:27 AM, MLA said:

Find where the noise enters the system. 

ok,  I’m going to start by turning on system then removing RCAs from amps. This should tell me if it’s come from headunit/blackbox
 

then I’m going to find ground at black box and ohm across to ground terminal for amps 

 

any other tips 

 

 

 

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