Stereo Hissing

[OSU 4 SHO]

We ran a 4 guage power wire, 3 sets of RCA cables and a amp turn on wire down the right side of the car. We ran the power to a capacitor, and then to a PYLE 4 channel amp powering the cabin speakers and a Fosgate 2 channel amp powering my subs. We have hissing through all speakers when the car is on and alternator whine. But no hissing when on accessorie position or when last setting before start position. What could it be? the hissing is very loud when the car is on. Any thoughts? thanks, aaron

 

[AutoSHO]

You should never run RCAs and Power wire in the same place. Run the RCAs on the opposite side of the car, and your hiss will be gone. It is noise from the alternator that comes through the power wire, and it affects the signal from the RCAs.

 

[Dassin]

I second that.

Also, not directly related to the hissing, but general wiring practice: you didn't mention how you're grounded. If you can help it, don't use an existing bolt (like for the back seat, etc), but instead use a new ground. I got a few grounding screws from magnolia Hi-Fi for free, they had a special tip that you're able to use a power drill and they just go through metal, and a couple jagged-looking washer things to help bite into whatever you have as your ground connection. I used a spot on my strut tower, myself.. Also, reinforce the ground wire from your battery thumb

Jon

 

[LOUDSHO92]

Yeah seperate the RCAs and the power wire. Also Pyle isnt all too good either. How do you have your power distributed? Did you just seperate at the cap or did you go to distribution block?

FYI in my car I have 2 amps as well. I first ran the power wire to a distribution block and then 1 wire to the cap and then to the sub amp. The other wire from the distribution block went to the speaker amp. The sub amp will use the cap much more the speaker amp will.

 

[OSU 4 SHO]

I fixed the problem, It was the pyle amp. It kinda sucks for running the JL Audio cabin speakers, but works great for powering my 10's. I have 4 gauge running to the capacitor, then spliting off to the two amps. Pyle for the JL 10W3's and Fosgate for the JL cabin speakers and soon to be spliced in 6W0. Now I am sure I could battle most anyone on the forum for sound. Thanks A lot. Aaron.

 

[yamahaSHO]

In my experience, Pyle is junk!

 

[Dassin]

LOUDSHO92:

FYI in my car I have 2 amps as well. I first ran the power wire to a distribution block and then 1 wire to the cap and then to the sub amp. The other wire from the distribution block went to the speaker amp. The sub amp will use the cap much more the speaker amp will.

Sounds like someone looked over my shoulder while I planned MY system wink Identical to what I have. Works great, don't it? thumb

Oh, and congrats on ditching the Pyle, Aaron!

Jon