help loud roaring noise through subs

[plumbcrazy 10+ year member]

when i turn my switch on or crank my truck the amp kicks on the i get a roar through my subs tap the brake makes a thump i can hear my turning signal through the subs and truck idle through them i have one of these hooked up i can pull the rcas out of amp and it stops does anyone know what this could be

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[nicker10 10+ year member]

What head unit do you have? If you have a Pioneer, you might need to ground your RCAs because of the pico fuse issue.

 

[phemps 10+ year member]

What head unit do you have? If you have a Pioneer, you might need to ground your RCAs because of the pico fuse issue.

thiss

 

[plumbcrazy 10+ year member]

alpine cda-9886 i had a jensen phase linear uv8 it did it to but not as loud so i went and bought this headunit tonight

 

[nicker10 10+ year member]

Hmm..Do you have a decent set of RCA's?

 

[plumbcrazy 10+ year member]

yeah double insulated rcas made by fa mobile

 

[nicker10 10+ year member]

Only other thing I can think of is a bad ground

 

[TMali 10+ year member]

just quick replace the rca's and see what happens.

 

[phemps 10+ year member]

induced noise possibly. are your rcas far from anypower wires and factory power bundles

 

[nicker10 10+ year member]

induced noise possibly. are your rcas far from anypower wires and factory power bundles

Good call

 

[plumbcrazy 10+ year member]

yeah there run down the other side of the truck