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
Answers:
1965 Chevy Impala front in dash speaker?
A noise filter (inductive type) that wires between the radio and fuse block (or battery).
Is the resistor for capacitor charging the little lightbuld included with the capacitor?
A ground loop isolator to go between the radio and amp.
Is this system setup good to do?
go 2 the place that installed it or where u brought it maybe they can helpcar audio good? any thing else?
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.Whats the difference between round ports and square ports for subwoofers?
You have a bad ground, and the feedback you are getting is relative to the engine speed.The previous owner cut the radio harness, what are the stock stereo color codes for an '85 Mustang?
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.
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Also check that he doesn't have his RCA cable crossing any type of power wire. That can also give some unwanted noise.Wiring from my amp too subwolfers?
put filter in the system to avoid that humming sound.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).
Basically you have to look onto the 3 things you have installed: stereo, amplifier, and wiring. Anyhow, PERFECT GROUNDING is still the key.
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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.
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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.
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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.
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