As much as I respect Gary, I still question the the use of the CS 3's sans eq if the amps are up to the job. Many (including myself) feel that the only place for a single sub is for the dedicated single sub output of surround sound, and that in typical stereo it can actually hinder proper bass production. Having multiple low frequency outputs can alleviate standing wave problems that almost always occur. The CS 3's bass output certainly qualifies as being capable of such low frequency output. The CS 3 unlike the Thiels that followed offers bi-wiring, so the eq can be inserted in such a way as to have little effect above bass frequencies. Most subs work best when crossed over to the lowest frequencies, as they typically are quite clumsy when asked to work much over the lowest octave. Unfortunately unlike the Thiel CS 3.5, the eq for the CS 3 doesn't have adjustable cutoff, which would allow integrating the sub below 40 Hz. With out using the CS 3's eq, I can't help but feel you would have been better off with two pairs of CS 2's. The CS 2's actually have deeper bass than the CS 3's sans eq, as well as a slightly sweeter top end. If your not using the CS 3's eq, you might want to try using the CS 2's as the mains.
