Ok, maybe I read your thread wrong at first.

Since you'll only be using the deck power for the rear speakers, you could still enable the crossover on the deck and set high pass (HP) to 80 or whichever one is optional. If only the front speakers can be crossed over, hook up the rear speakers to the front outputs. The only downer is you won't be able to fade...but that shouldn't be a big deal anyhow.

I'm in the LM as well, FYI.

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