Problems! 2000 Caravan Sport and Infinity Sound

I removed the Infinity CD/Tape/Radio unit from my 2000 Caravan because the
CD player no longer works and I am attempting to replace it with an
aftermarket unit. I bought a dash adapter and wiring kit so I wouldn't have
to cut/splice any of the wires.
Now that I have it installed the rear speakers won't work. Wanting to rule
out bad rear channels in the receiver, I swapped the front and rear speaker
connections. The front speakers still work using the rear channels of the
receiver, so I know the receiver is ok, and it must be something with the
wiring. I tried to get continuity with my V/Ohm meter and couldn't get any
with the rear speakers.
As a last ditch effort, I went to the local Mopar garage and told the guy at
the service counter my story and he told me that "you can put an Infinity
receiver in a non-Infinity vehicle, but you can't put an aftermarket radio
in an Infinity equipped vehicle without replacing the speakers. Each speaker
has it's own amp on the back of it". By that I figured he meant a diode or
transformer of some kind.
Is there any way I can use the stock speakers? Remove the diode/transformer
or something.
What do people usually do in this instance?

Thanks,
Snydley

 

So....find and fix the problem!

No, he means an amp.

 

Hey asshole,
I don't need any crap like this from you. If you don't KNOW what the hell
the problem is , keep your fuckin' comments to yourself when I write to this
group.

 

A few rounds with google would have gave you your answer.
Search for "PAC OEM-1 adapter".

http://www.pac-audio.com/oem1kits/oem1search.htm

Bob

 

Then I suggest you not read my posts. I'm not about to stop making 'em.

Friendly greetings!

DS

 

| On Fri, 15 Oct 2004, Snydley wrote:
|
| > Hey asshole,
| > I don't need any crap like this from you.
|
| Then I suggest you not read my posts. I'm not about to stop making 'em.
|
| Friendly greetings!
|
| DS

Daniel, you're going to morph into a curmudgeon as you age if you are not
careful! ;-)

 

Harrumph. Speak up! I can't hear ya when ya mumble.

 

Thanks Bob,
You see, I didn't even know what I was up against, let alone what to search
for. I'm not even sure what this does, or if it's what I need. What I want
to do is use the amp built into my new aftermarket receiver, with the
speakers that are stock in the van. Is that possible, or do I need to remove
the speakers, or the amp on the speakers and run the wires directly from the
receiver to those speakers.
By going to that website I see a question in the FAQ section that describes
my problem, front speakers on, but no rear speakers, it says to connect the
Remote "turn on" wire to the Infinity's amps remote wire. My new receiver
has one of these wires.You don't know where these amps are located do you?

Thanks for your help,
Snydley

 

Ok, i will try to explain in laymans terms. Your rear speakers have a
amplifier on them. The audio leads from the head unit to these
rear speakers do NOT drive the speakers direct. They are a line level
signal. This signal then feeds the local rear power amp which then
drives the speakers. The PAC unit has a convertor to feed the proper
level signal to the factory amplifier from an aftermarket stereo, and
tells you how to power the amps on. If you are intent on using the after
market radio's internal amps for the rear, the easiest ways is to run
new wires to the speaker locations and install new speakers in the rear.

Bob

 

you can use the stock speakers with amps you just have to power up the amps
using a relay and getting it's trigger from the remote turn on wire off the
aftermarket radio

 

I got a website http://www.pac-audio.com/oem1kits/oem1search.htm from
someone who replied earlier, did a little research on that site and it said
that if you have sound in the front, but nothing in the rear you need to
turn on the rear amps. Looking over the connections again, I found one wire
from the harness, and from the receiver that weren't being used, turns out
they were the amp "on" wire on the harness, and the power antenna/remote
turn on wire on the receiver. I connected them together without a relay, and
it works ok, UNTIL I turn it up real loud, or have too much bass in the
sound, then the rear channels drop in and out, until I lower the volume.
Maybe the amp is getting too "hot" a signal and causes it to drop out? I
guess I can use it like that for now, until I can get some new speakers in
the back.

Thanks to all!!,
Snydley

 

most after market radios have a pre amp in them bumping up wattage to say 50
watts per channel and then when u try to run that signal into another amp a
thing called clipping occurs and the speaker cuts out . it's a megahertz thing
u can't amplify a signal twice

 

Well, the intent of your message is correct, although the technical
accuracy is not... You most certainly can amplify a signal twice (or even
50 times). It's not a "megahertz thing" at all - clipping is caused by
overdriving an amplifier's input capability, based largely on the biasing
of said amplifier.

 

ROTFL. This statement is hilarious. You can amplify a signal as many
times as you want. Multiple stage amps are very common. "It's a
megahertz thing," now that is a classic.


Matt

 

when you use a scope and amp the signal twice you cut off the freq at the top of
the wave hence the word clipping and you can watch it on a scope it becomes a
stright line then drops bac down
doubt my words try hooking up a eq after a 2 channel high power radio has been
installed and use all high level wires to hook it up

 

Only if you are overdriving one of the amps. Keep within the capability
of the amp and you can cascade several before distortion becomes a
significant factor.


Matt

 

You're clueless. Don't post again until you learn a little about what
you're talking about.

 

i know exactly what i'm talking about i just can't seem to word it correctly

i can safely say i have forgotten more then u will know

 

matt i do know what i'm talking about
and would like to know what makes you such a expert in cars? because you own one !
asshole