Engine Noise

[bige9142]

Just installed 2 - 12" Alpine E Series along with a Alpine MRP-M450 as well as 4 - Pioneer 5 x 7 on a Sony 754 Series Amp. I did the not so traditional thing and used an EQ instead of a crossover. I'm noticing engine noise something serious in my Pioneers. I'm thing ground's no good from the amp, but I have it wired under my seat brackets. Any suggestions? I had one guy tell me to run the ground straight to the battery, but I'm not sure about that. HELP!!!!

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[dleccord 5,000+ posts]

dont do the ground just yet. try running your RCAs straight to your amp to see if it's the rca's problem.

 

[Freshe5b]

Most cases its the RCA's. Try running speaker wire/RCA's as far away from the power wire as possible. It solved the engine noise problem in my car.

 

[squeak9798 5,000+ posts]

Most cases its the RCA's. Try running speaker wire/RCA's as far away from the power wire as possible. It solved the engine noise problem in my car.

Incorrect.

In most cases, the issue is an improper ground on either the amplifier or the headunit (or another preamp level device, such as his EQ).

Running the RCA's next to the power wire will not induce engine whine.

If moving your RCA's fixed the problem, it was not due to it's proximity to the power wire but due to some other variable.

 

[smd4life 5,000+ posts]

Most cases its the RCA's. Try running speaker wire/RCA's as far away from the power wire as possible. It solved the engine noise problem in my car.

//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif the same power running through your power wire, runs through the intire car //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[bige9142]

Figured out the problem, it seems that an EQ and Head unit need it's own supply. When you fail to do so, the engine noise will come through the speakers. The other variable was that while crimping some wires, one of the power wires was slightly exposed. After cleaning up the install, all is well in D-Town. Thanks for the suggestions.