[QUOTE][i]Originally posted by merlin [/i] [B]I was reading an old Soundstage article.... Here's a summary: [i]"If the crossover point is nominally 80Hz, the subs have to have excellent performance up to 160Hz while the main speakers have to be flat or nearly flat to 40Hz."[/i][/B][/QUOTE] That seems very strange to me for the following reason: If you look at one of the leading sub/sat manufacturers - M&K (Miller & Kreisel) who's gear is to be found in many a recording studio - you will find that practically all of their monitors are designed to be used with subwoofers and have a +/-2dB roll off of 80Hz - they certainly don't go anywhere near 40Hz and yet they are widely acknowledged to be the business (certainly the 'pro' range) and are fairly easy to integrate with a subwoofer either using a processor's bass management or using one of M&K's bass management units. I used to use a pair of their smallest pro monitors and (using my Tag to bass manage) easily achieved seemless integration - I was using a quality (ultra low distortion) sub though. Matt.