Kenwood Stereo in 5KCS problem

[dan sinclair]

In my particular case, using the Antenna lead produced an audible pop in the speakers on power up and power down.  Consulting the manual for the deck (a Blaupunkt Toronto) the manual stated explicitly to not connect the antenna lead to external amplifiers - use for power antenna operation only.  I connected the lead to the REM wire (usually pale blue, but not in this case...) and no audible pop - clean operation.  Just my experience.

-Dan

-----Original Message-----
From: Ti Kan [mailto:ti at amb.org]
Sent: Tuesday, July 09, 2002 1:17 AM
To: dan sinclair
Cc: quattro at audifans.com; Ameer Antar; spsherm at attglobal.net;
Eric_R_Kissell at email.whirlpool.com
Subject: Re: Re[2]: Kenwood Stereo in 5KCS problem


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
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