For the most part I've gone without the sub for music. To my ears, the presentation just sounds better with the speakers by themselves. Maybe my sub placement is not optimal, but there is nothing I can do about that at the moment.

I haven't tried the sub with my M40s and don't know how the sound would be with them. I guess after I get done moving I can play around with different configurations.

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