Here is my scheme...

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Last year I build a lm3875 chip amp. It turn out excellent and I love it.

The only thing is that now I want to make more amps.

I am thinking of getting a lm4780 kit from audiosector, and making a 4-channel amplifier to compliment my current amp. I can use the 4 new + 2 old channels to make a 5.1 setup.

Here's my question: If I am only feeding the sub the signal from the sub channel do I still need a crossover? No, right?

Are there any other considerations I should take into account??
 
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