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Old 12-27-2020, 10:21 PM #1
usdmej usdmej is offline
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help with understanding speaker layout

planning an audio system upgrade and was wondering if anyone could clarify the setup i have planned. vehicle is a 2020 4runner non-jbl

based on this video

Toyota 4Runner Stock Stereo Overview - How to upgrade the audio in your 4Runner Series - YouTube

the rear door and cargo speakers are each 2ohm and wired in series


i plan on running a 5 channel amp that will get speaker level inputs from the stock headunit and is rated to power the main channels at

75w X 4 @ 4ohm
100 X 4 @ 2ohm


so there will be 2 channels that will power the 4 rear speakers (2 rear door and 2 cargo speakers). i plan on getting new 4ohm speakers, how will this affect the power draw of the amp? i'm a little confused about using 4ohm speakers but that's pretty much the only thing you can find in the aftermarket


can anyone explain the math involved and what i need to account for?

thanks in advance!
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Old 12-27-2020, 10:28 PM #2
Dude Dude is offline
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You can remove the rear hatch speakers from the mix and just run 4ohm speakers in the rear doors. Search my recent posts and you will see how I created jumper plugs to bypass the speakers. Those rear speakers won’t be missed and I don’t think you want to pump 100WPC at 2 Ohm thru the factory wiring anyway.

Last edited by Dude; 12-27-2020 at 10:31 PM.
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