Stereo problems?????????

Question

Hey everyone,, My husband is having some stereo/amp issues... He just went and got an amp hooked up to a stereo.. and he says when the truck is not turned on it sounds GREAT... but when you turn the truck on the STEREO makes a "engine whining" sound therefore you cant even play the stereo.. Anyone have any clue what could be causing it??? Thanks a million

Answer 1

Two things that will cure the problem...

A noise filter (inductive type) that wires between the radio and fuse block (or battery).

A ground loop isolator to go between the radio and amp.

Answer 2

Basically you have to look onto the 3 things you have installed: stereo, amplifier, and wiring. Anyhow, PERFECT GROUNDING is still the key.

Stereo. It is obvious that if the stereo is the problem, then even when you have NOT YET hooked up an amp to it, you would have experienced the humming problem.

Amplifier. You may check if your amplifier is the problem if you test another unit of amplifier to your sound set-up and see if the humming sound will still be there or not.

Wiring. Wiring is essential when it comes to car audio set-up. It should not be regarded as for POWER/SIGNAL TRANSMISSION only. Rather the wirings to be used should be of high grade, meaning, the wires themselves should be oxygen-free, etc. If you pull the power cable to the left side of your car down to the amplifier, then the RCA (signal) cable should be pulled to the right side of your car. If you can, avoid the power cable and the signal cable to cross each other because it may cause the humming sound.

Noise filters or ground loop isolators are just remedies. If you want total solution for your problem, check out these 3 factors.

Answer 3

You have a bad ground, and the feedback you are getting is relative to the engine speed.

Check Speaker wires, wire between the stereo and amp, and power connections to the amp. Check here first, i suspect he grounded it to a painted piece of metal such as seat rail, or body. Move the ground until you don't hear the noise.

Check the ground at the battery where he hooked up for the amp. It might be loose.

Answer 4

The metallic components strengthen or shrink observing the temperature, each and every so commonly moisture ought to set in. those should not be a topic rely with a reliable stereo set regrettably maximum motorcar producer's stereo at the instant are not that reliable, so while you're relatively a song buff and song is significant to then you certainly i desire to advise have it replaced to a reliable one, there are multiple shops that ought to help you %. up a reliable one which will run reliably

Answer 5

Tell him to buy an electronic noise filter. They're available at most car stereo stores. Barring that I'd also look into replacing the alternator in the car as the rectifier may be going bad.

Answer 6

in addition to the ground cable checks, check and see if the power cable from the battery isn't running by any ignition system components. also check under the dashboard, some engine system wires pass down there and if he's running unshielded or untwisted signal wires down there they could pick up the magnetic field from the current running through them (that's called "induction," and that's how a signal can "jump" to a wire that it's not even physically touching).

Answer 7

Also check that he doesn't have his RCA cable crossing any type of power wire. That can also give some unwanted noise.

Answer 8

put filter in the system to avoid that humming sound.

Answer 9

go 2 the place that installed it or where u brought it maybe they can help