Kenwood Stereo in 5KCS problem

Ti Kan ti at amb.org
Tue Jul 9 02:16:54 EDT 2002


dan sinclair writes:
> I didn't catch the original post on this one, but I'd recommend against usi=
> ng a Power Antenna lead to supply the REM signal to an amp.  I've done this=
>  accidentally (poorly coded wire colors) and it will likely produce a nasty=
>  'pop' in the amp circuit when you power up the headunit.  Antenna leads ar=
> e designed to supply 12volt accessory power to run an antenna motor, while =
> a REM or remote lead is designed to provide a low voltage 'signal' to the a=
> mp to power up when the headunit comes on.  A antenna lead should not be us=
> ed to power an amp either.  The current demands from an amp far exceed the =
> intent of an antenna lead.

I don't see why an power antenna turn-on cannot be used as a power amp turn
on signal, 12VDC is 12VDC.  Some radios that have a separate power amp turn
on signal will enable that signal after a short delay to prevent the radio's
turn-on transient from reaching the speakers.  However most good power amps
have its own delay muting feature so that shouldn't be a big problem.
That said, *some radios* will retract the power antenna when you switch to
CD or tape mode, and in those cases you shouldn't use the antenna enable
as the power amp turn-on signal lead for obvious reasons.

-Ti
2003 A4 1.8T multitronic (soon)
2001 S4 2.7T
1984 5000S turbo
1980 4000 2.0
--
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Laboratories, Sunnyvale, CA. USA
  ///    ti at amb.org
 //////  http://www.amb.org/ti/
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