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Car Forum / Driving, Maintenance, Tuning / Car Audio / October 2006

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New Stereos in Old Cars...Compatability?

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Zomby Woof - 02 Sep 2006 08:09 GMT
I have a '63 Riviera that I'm contemplating adding a new cd/mp3 player to.
(Putting in the glovebox...keeping the original radio where it is, but
by-passing it.)

Are there any old car experts in here who can help me with the compatablity
of new players in old cars?

Gracias, in advance...

ZW
e-nigma - 02 Sep 2006 14:11 GMT
>I have a '63 Riviera that I'm contemplating adding a new cd/mp3 player to.
>(Putting in the glovebox...keeping the original radio where it is, but
[quoted text clipped - 6 lines]
>
> ZW

One thing to look out for in old vehicles is grounded speakers. So it's best
to run your own pair of speaker leads to each speaker.
Matt Ion - 03 Sep 2006 19:23 GMT
>>I have a '63 Riviera that I'm contemplating adding a new cd/mp3 player to.
>>(Putting in the glovebox...keeping the original radio where it is, but
[quoted text clipped - 9 lines]
> One thing to look out for in old vehicles is grounded speakers. So it's best
> to run your own pair of speaker leads to each speaker.

Ya, that's a good point: many old "systems" (to use the term loosely) used a
single wire to the speaker, and the car body as the ground.  This will blow up
any new "high-output" decks.
Brandonb - 03 Sep 2006 19:46 GMT
> One thing to look out for in old vehicles is grounded speakers. So it's best
> to run your own pair of speaker leads to each speaker.

Something else is if it uses something other than the now standard 12v
system. I've heard of some that were 6v systems, but those might be the
REALLY old cars. Not too up on that. If the OP rewires everything
themselves, using new wires instead of the old wiring (and I know I
wouldn't trust wiring that old!), and using a 12v battery and electrical
system which it most likely already is, then there really shouldn't be a
problem other than mounting location as its probably a metal dash made
for a shaft style, if even that lucky, could be something else entirely.

Brandonb
Matt Ion - 03 Sep 2006 23:01 GMT
>> One thing to look out for in old vehicles is grounded speakers. So
>> it's best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 7 lines]
> problem other than mounting location as its probably a metal dash made
> for a shaft style, if even that lucky, could be something else entirely.

Good point too, I've seen maybe one or two cars that were 6V systems; I think
they were really old British cars.  I've also seen some that were 24V
(specifically, diesel machine, I think either old Land Rovers or Range
Rovers)... 6V probably wouldn't kill your gear if you hooked up to it, but 24V
sure would.
e-nigma - 04 Sep 2006 04:25 GMT
>>> One thing to look out for in old vehicles is grounded speakers. So it's
>>> best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 13 lines]
> Rovers)... 6V probably wouldn't kill your gear if you hooked up to it, but
> 24V sure would.

Old VW's used a 6 volt system.
Many of the old british cars used a 12 positive ground. So you had to
isolate the
antenna ground lead and the insulate any metal the the radio chassis might
touch.
I. Care - 04 Sep 2006 06:13 GMT
> >>> One thing to look out for in old vehicles is grounded speakers. So it's
> >>> best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 19 lines]
> antenna ground lead and the insulate any metal the the radio chassis might
> touch.

I also had fun with an older VW bug that was 12v pos ground.  Found out
when we tried to jump start it of course.
Signature

I. Care
Address fake until the SPAM goes away ;-}

Matt Ion - 04 Sep 2006 08:54 GMT
>>>>>One thing to look out for in old vehicles is grounded speakers. So it's
>>>>>best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 22 lines]
> I also had fun with an older VW bug that was 12v pos ground.  Found out
> when we tried to jump start it of course.

Oooh, ouch!
Arlan.Murphy@gmail.com - 10 Sep 2006 18:28 GMT
> I also had fun with an older VW bug that was 12v pos ground.  Found out
> when we tried to jump start it of course.

there was never a 12v positive ground Volkswagen Beetle.
Matt Ion - 04 Sep 2006 08:53 GMT
>>>>One thing to look out for in old vehicles is grounded speakers. So it's
>>>>best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 19 lines]
> antenna ground lead and the insulate any metal the the radio chassis might
> touch.

Ah yes, I stand corrected (see Nick, it happens!) - it WAS an old vee-dub I saw
the 6V setup in.  I think we actually used some sort of DC step-up device in
that, if memory serves.  It was kind of unusual at the time, as those kinds of
switching power supplies were mostly relegated to high-power amps.

The positive-ground systems are by far the biggest bitch - stepping voltage up
or down is a piece of cake compared to having to physically isolate everything
including the antenna from the deck :)
keith - 09 Sep 2006 18:26 GMT
>>>>> One thing to look out for in old vehicles is grounded speakers. So
>>>>> it's best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 30 lines]
> voltage up or down is a piece of cake compared to having to physically
> isolate everything including the antenna from the deck :)

Yes, the old VW's had 6V systems, but the prescribed way to handle it
was to remove the 6V _generator_, and replace it with a 12V _alternator_
(but you also had to change all of the bulbs and such).  Good times...
Matt Ion - 09 Sep 2006 18:45 GMT
>>>>>> One thing to look out for in old vehicles is grounded speakers. So
>>>>>> it's best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 34 lines]
> was to remove the 6V _generator_, and replace it with a 12V _alternator_
> (but you also had to change all of the bulbs and such).  Good times...

Yeah, well, when the owner just wants an $80 deck installed, the cost of a 12V
upgrade doesn't generally go over too well... $50 or so for a voltage inverter
is generally preferable.
keith - 10 Sep 2006 05:53 GMT
>>>>>>> One thing to look out for in old vehicles is grounded speakers.
>>>>>>> So it's best to run your own pair of speaker leads to each speaker.
[quoted text clipped - 39 lines]
> a 12V upgrade doesn't generally go over too well... $50 or so for a
> voltage inverter is generally preferable.

Yea, just reminiscing...

Truly, the main purpouse of the 12V conversion was to be able to run
electronic ignition systems on souped up motors... It had nothing to do
with music :)

so yea, use an inverter if you wanna keep everything else vintage...

KeithS
John - 10 Sep 2006 17:00 GMT
Many older vehicles used a 6 volt, or 8 volt, set up...There were/are
plenty of american cars as well...Not just foreign, british...Even
chevy cars from the 40's and older...Lead sleds... Also, some old old
fords used a opp positive ground configuration... Not to mention a fair
amount of old farm equipment, tractors etc...

Back to the original starting question, if you are adding a setup to
that '63 you won't have to worry about too much of this (voltage & what
not). I say run new wires, and do not use the original speakers...IF
they are functional, and work decent, they still may not function to
great with a new hu as many had a much higher impedance than what most
speakers are now. You'll have to check it out for yourself there. Plus,
I am guessing that car has an odd factory speaker setup (as to # and
position), as my 63imp does. So, run new wires, to the speakers and hu,
the only thing you may have trouble finding is the (ign) turn on relay.

Signature

John

Matt Ion - 10 Sep 2006 23:54 GMT
> Many older vehicles used a 6 volt, or 8 volt, set up...There were/are
> plenty of american cars as well...Not just foreign, british...Even
> chevy cars from the 40's and older...Lead sleds... Also, some old old
> fords used a opp positive ground configuration... Not to mention a fair
> amount of old farm equipment, tractors etc...

Yeah, but there's nowhere to mount a sub box on a tractor!
John - 11 Sep 2006 18:42 GMT
Matt Ion Wrote:
> > Many older vehicles used a 6 volt, or 8 volt, set up...There were/ar
> > plenty of american cars as well...Not just foreign, british...Eve
[quoted text clipped - 4 lines]
>
> Yeah, but there's nowhere to mount a sub box on a tractor

The hell if there isn't.....

--
John
Matt Ion - 10 Oct 2006 22:02 GMT
> Matt Ion Wrote:
>
[quoted text clipped - 10 lines]
>
> The hell if there isn't......

*bump*
So how's that boom-tractor project coming? :)
John - 11 Oct 2006 15:35 GMT
I plowed through it with ease, kind of like I did with your mother..

--
John
jowens500 - 11 Oct 2006 21:28 GMT
A old Ford Falcon I worked on had a 12v positive system.  We took it t
a local alternator shop and had them switch it to a 12v negativ
system.  Didn't have to change any parts.  Made it MUCH eaiser to wor
on than trying to isolate everything from metal and didn't cost tha
much at all (under $50)

--
jowens500
 
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