type 44 stereo, is this a bad ground?

[Henry A Harper III]

I had a similar issue with a USAcoustics 4x80w when I installed it in my 
200q20v lo these many years ago (6? wow...) Tried a choke on the head unit 
power wire, moving the ground point, didn't help. What finally did it was 
moving the signal wires over to the driver's side away from the battery cable, 
which happens to be tip #1 for alternator noise reduction at this handy site: 
http://www.bcae1.com/audiots.htm

HTH
Henry Harper
http://www.henry-harper.com hah at alumni.rice.edu
1991 200 quattro, 120k, maybe I should try turning on the balanced outputs 
sometime, duh
1988 GTI 16v, 239k, up in the air waiting for warranty replacement Bilstein

On Friday, March 12, 2004 8:06 PM, CL Wong [SMTP:montesawong at yahoo.com] wrote:
> I just installed a new amplifier into my 200Q20v and
> I'm getting all kinds of noise that my old dead
> amplifier didn't make.
>
> Head unit is grounded to the same seatbelt bolt that
> the amp is grounded to.
>
> pulling the RCA cable from the amp silences the noise.
> pulling the RCA cable from the head unit also silences
> the noise.
> pulling the antennae does not silence the noise.
>
> with the engine off, I can hear the indash cd
> mechanism doing the track seeking thru the speakers.
>
> with the engine on, I get a buzz with an engine speed
> related whine behind it.
>
> old amp: kenwood 40wX4
> new amp: usacoustics 60wX4
>
>
> so is this somekind of ground issue?
>
> Do I need to add a noise filter to the switched 12v
> and constant 12v to the head unit?
>
> thanks in advance.
>