tweeter whistles with rpm of engine?

Discussion in 'Mustang Sound & Shine All' started by mustang_montana, Jun 12, 2009.

  1. mustang_montana New Member

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    hey guys, my front drivers side tweeter has a high pitch whistle that follows the rpms of the engine. its a 96 gt with the mach 460. i removed it and put a known good one in its place and still have the whistle. it only does this when the engine is on, and no its not the supercharger :D im thinking it could be my new alarm i had installed last summer, the sound had started that fall. other than that i have no idea, id like to find something to wrap the speaker's wires with to rule out interference. any thoughts? thanks guys
  2. Jax Rhapsody Member

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    Cant wrap them with anything, it has to do with the amp if you have one. Or its the wiring used, get some non-interference wires. I'm guessing the MAch 460 is the factory radio??
  3. mustang_montana New Member

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    the head unit is a 4-5 year old pioneer cd deck. i never thought of the amp, i can swap the passenger one with the drivers one and see if that does it. thanks
  4. COramprat Old guys rule!!!

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    Try a noise suppressor. Sometimes the alternator noise will bleed through the system.
  5. ZakeriD New Member

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    I'd put money on the head unit being the problem. Pioneer's are know for developing this problem. Especially if you have removed the stereo without disconnecting the power.
  6. Drew0318 New Member

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    Sounds like a bad ground on the head unit (or amp).
  7. mustang_montana New Member

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    it was the head unit, no more obnoxious whistle. i do however still have a low annoying hiss comming from both speakers, even with the volume turned all the way down. not sure whats causing that?
  8. tc3k101 New Member

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    pioneers have a known pico fuse issue. when they blow you get really bad feedback or alternator whine. you can either ground the outputs on your cd player or try and get a ground loop isolator but those generally dont turn out too good.

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