idrag2

Ok I was told I needed a MSD 6A box for my 89 formula. Ok no problem there. But I have a massive stereo in the car and it already has alittle RAIDO WHINE in it and I never could get rid of it, so I got used to it. The question I have will the MSD box make this worse? And how can you tell the differance between Alt. @ Ing. noise. Like I said its a whine and it gets higher picthed when you rev up the engine.

Thanks for any info

I DRAG 2

flyswatter

sometimes the noise like you describe is from a poor ground source for the amp.
try unhooking the amp. and running the radio
to see if the nois is still there. most of the problem with ing\alt. nois is from poor grounding. if you run heavy pos. wire then you must also run heavy ground wire. and dont depend on chasie ground iether.

Stoopalini

Yea, I agree. That wine you hear is from a ground loop. There are a couple of things you can do to get rid of it:

• re-do the ground on the deck and on the amp. Make sure the ground is either soldered to the frame, or underneath a screw where the frame is unpainted.
• You could try upgrading your ground wire at the battery to a thicker guage wire.
• If all that fails, run the ground wire for your amp up to the same point where your deck is grounded.

Try these options, and let us know if you still have the wine.

Thomas.

Stuart Moss

As the above posts stated, you probably have a poor ground somewhere in your stereo power connection.

Alternator whine is a varing pitch of a tone, the frequecy dependent upon engine speed. It is a fairly smooth pitch.

Ignition noise, on the other hand, is more of a popping or crackling noise. Listen to your AM radio to a weak station and you should hear it - unless you have a really good radio/installation that inhibits it. A strong AM station will overcome most/some of this noise because the transmitter signal is stronger than the noise generated by the secondary ignition.

The solution to your problem could be many things, from the simple to the complex. Check the easiest things first like good (clean) strong connections to all of your power leads - especially to the amps. Are all of the ground wires (amps, head unit, EQ, crossover, etc.) connected to the same point? If not, that could be the cause.

Some will disagree, but I like running a ground wire directly to the battery negative post (partly due to running RF equipment) which, to date, I have yet to experience any problems. Connecting to a good (clean) chassis point is probably the most common method, though.

idrag2

Thanks for the help I will try all of these answers and see what happens


Thanks I drag 2