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RE: Yes...

Posted by pictureguy on July 10, 2017 at 10:26:55:
In my system, i Also high pass the main speakers, but at a frequency above that of the low pass to the sub. Sub crosses about 40 to 45hz while the high pass to the main speakers is 50 to 55hz.
The 'gap' is filled in since neither filter is 'brick wall' and either 24 or 12 db/octave.

You are being VERY optimistic about how much power you will 'save'. The 50:50 power distribution point is roughly 350hz.

How do you intend to mediate the crossover?