Noise Supressors

[Stinky Rooster]

I have a Nesa dash mounted DVD player in my S1 Stagea that transmits audio to an old JVC HU on an FM freq via a modulator with a lot of engine noise. The noise (whine) rises and falls with revs so I am pretty sure it is alternator interference, but the confusing bit is that the noise is only when the dvd player is on (playing or not) and not when the HU is playing radio.

I have tried a 5 amp supressor (no amps or such at this stage) on the FM modulator but it hasn't made any difference so I am at a bit of a loss as where to go next, any suggestions would be appreciated.

[RANDY]

Does the JVC HU make those noises on other stations or from CD? I mean.. is it the wireless bit, or do you have the very common "whine that you will never get rid of" problem that others have?

[Stinky Rooster]

No, thats the really annoying part about it - the whine is only eveident when I am using the dvd player.

The HU is an older model that has a (unused) tape deck - I use the dvd player for my cd's

[Midol]

Anyway you can rewire it so the head unit isn't used?

Might be cheaper and easier?

[Stinky Rooster]

Only problem with that, is the dvd player doesn't have any speaker level out - it is transmitting to the head unit via a fm modulator (that I connected the noise supressor to) and the HU amps it up and puts it out to the speakers. Also, the dvd player doesn't have a tuner so I am still using the HU for the radio - its only the tape deck thats unused.

Does anyone out there have any good reason why I shouldn't just go and buy 2 more noise supressors and put one on the power to the dvd player and one on the power to the head unit? I know it may be overkill, but thats how p1ssed off I am getting. I have never seen a setup produce this much noise without any amps or anything..

[someonestolecc]

Where'd you plug the power from?

Test it's not the power supply by running a wire (with appropriate fuse) straight to the power. It might be needing more current for dvd mode than you're giving it.

Also make sure your ground is the same gauge as the power you're giving the unit. ...

Suppressors are a band aid fix from how I see it.

[tek_01]

try to keep signal wires away from power wires also, thats a rule of thumb