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Do aftermarket radio's work with stock amp?

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Old 10-28-2008, 05:33 PM
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Do aftermarket radio's work with stock amp?

I searched but couldnt find anything but when you install an aftermarket radion do they work in conjunction with the stock amp(pioneer sytem 08SSTC) or do they just run their own power to speakers??

I'm looking at the kenwood dnx8120 and I was wondering if it will sound the same or will it lose sound quality?

Any help would be appreciated....
Old 10-28-2008, 07:14 PM
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well, heres the thing, the radio will work with your stock amp, but the reason there is an amp in the first place s because the stock hu was essentially a preamp, so when you add an amplified hu to an amped system you can overdrive the amp and blow speakers/ channels, i have mine hooked up to the stock amp, but i know not to turn the volume up more than the stock ones went to , i need to find out how to remove my stock amp, and just use the hu for power
Old 10-28-2008, 07:20 PM
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how many watts is the stock amp
Old 10-28-2008, 07:34 PM
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not much but i am not sure to be honest with you
Old 10-28-2008, 09:59 PM
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Originally Posted by fmxr47
well, heres the thing, the radio will work with your stock amp, but the reason there is an amp in the first place s because the stock hu was essentially a preamp, so when you add an amplified hu to an amped system you can overdrive the amp and blow speakers/ channels, i have mine hooked up to the stock amp, but i know not to turn the volume up more than the stock ones went to , i need to find out how to remove my stock amp, and just use the hu for power
read the amp bypass write up i wrote... the original thread is under raven ss since i gave him instructions via PM

Originally Posted by thehov
I searched but couldnt find anything but when you install an aftermarket radion do they work in conjunction with the stock amp(pioneer sytem 08SSTC) or do they just run their own power to speakers??

I'm looking at the kenwood dnx8120 and I was wondering if it will sound the same or will it lose sound quality?

Any help would be appreciated....
really depends on how you install it. a normal install will just wire direct inline with the stock amp. But especially if your getting a unit as nice as the 8120 i would do the amp bypass that way you get better sound overall

Last edited by EmperorJJ1; 10-28-2008 at 09:59 PM. Reason: Automerged Doublepost
Old 10-29-2008, 12:12 AM
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if you replace a head unit in any new gm vehicle you need an ecu adapter it costs around 100.00 bucks everything in the new cars are interconnected including the radio my cobalt ss and trailblazer both needed them. the have adapters for the ecu that work with the stock amp
Old 10-29-2008, 12:19 AM
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wanna bet? look on the metra site 06 2.2 non amplified cobalt. Or i can take a picture of my harness.
Old 10-29-2008, 12:21 AM
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Listen to the Emperor.......he knows what he is doing.
Old 10-29-2008, 07:49 AM
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Originally Posted by DoubleLP
Listen to the Emperor.......he knows what he is doing.
i know..... I always learn something when reading anything he posts.....
Old 10-29-2008, 11:11 PM
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well i added a new head unit that put 40 watts to each speaker, i thought the amp was in side the old hu from gm
and my sound system sounds like **** if its up to high, how much of a diffrence can 40 watts make?
Old 10-30-2008, 01:33 AM
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well line level /rca/ pre amp power is measured by the voltage because its so small. every HU actually puts out exactly 22w per channel which is something like quadruple that of line level power. An amp bypass will fix your issue
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