Re: Car audio question..

["jtrealtywebspannet" <jtrealty@xxxx>]

Run two wires (try 12 ga) temporaraly (power and ground) from the 
radio to the battery. If the problem goes away the wiring to the radio 
is not heavy enough to provide enough power to the radio at high 
volume levels.
David Teitelbaum
vin 10757



--- In dmcnews@xxxx, "Hank Eskin" <henry@xxxx> wrote:
> 
> Today I installed my new Alpine radio. I'll spare everyone the 
details, but
> the install went very well, due to lots of preparation and DML 
research.
> But I have a problem.
> 
> The radio basically works OK - all functions work - power antenna, 
proper
> illumination, no sparks or shorts, and everything else in the car 
still
> works fine. This radio has a built in 27 watt RMS/60 watt peak x 4 
channel
> amp, which is powered by a direct connection to the battery 
(positive and
> ground).
> 
> Here's the problem: The sound is good upto volume level 14 or 15 (I 
know
> the numbers are meaningless, but it's just a point of reference). 
That
> level is a good, normal level for listening to most things and still 
carry a
> conversation with someone. As soon as I turn it up past that point, 
I get
> increasing amounts of loud static. It's not the speakers clipping, 
or a
> clipping sound at all, the best I can do is describe it as loud 
static. I'm
> also pretty sure it the amount of static is proportional to the 
amount of
> bass in the music and/or the bass setting on the radio.
> 
> Here's what I think the problem may be, but I'd like some 
professional (or
> at least knowledgeable) opinions. The Delorean wiring harness for 
the Craig
> radio share a common (-) lead between the front and rear speakers 
for each
> side. (Right common and left common), plus four (+) leads for each 
speaker
> (6 total leads). Of course, the new radio has separate + and - 
leads for
> each speaker (eight total leads). I combined the each of the two 
(-) leads
> for the left and right sides to match up to the harness (8 leads to 
6
> leads). Is it likely that the combining of these two sets of two 
leads from
> the radio is causing the amplifier to cause this static? Should I 
go back
> in and just wire the speakers directly to the radio leads?
> 
> Besides this one problem, the radio sounds great - no hiss or hum or 
engine
> interference, etc.
> 
> Thanks,
> 
> -Hank #1619