Thank you, John. From my limited understanding of slopes, I was under the impression that the steeper the slope the better--meaning the overlap of the sub and the speakers is kept to a minimum. The 6dB octave filter may seem too steep. I don't even know if my understanding is correct, though.

I'm going to have to read up on second-order filters.

These high-pass filters seemed such a simple thing at first. Who'd of thunk I'd actually have to LEARN something before buying!

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose