Thread: Stereo system
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Old 04-30-2021, 06:59 PM   #26
Ashikabi
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Quote:
Originally Posted by FR-S2GT86 View Post
I would suspect that the "incompatibility" is Harmon convincing someone at Toyota that their head unit "is so much better than your factory-supplied Pioneer unit that you won't need an amp anymore for those door speakers".



The Harmon deck couldn't be MUCH more powerful than the Pioneer deck or else people would be complaining that the dash speakers are too loud or they're blowing tweeters on twins with the Harmon head unit.



The factory amp should be able to utilize that speaker-level signal without much, if any issues.



But until someone tries my experiment (since I can't, or else I would) we won't know for sure. It should only take a few minutes once you identify the two wires, and I believe there are schematics and plug diagrams posted somewhere on this forum.....



And yes, obviously, according to @Tcoat their "solution" didn't work well. So again, I would like to nominate Tcoat to help us all out and confirm for us what I suspect (and help himself out in the process.)
The incompatibility is probably that the Harmon unit has an amp internally and the stock one doesn't. Double amp sounds dicey

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