@sleepwalker65, I’m all for bi-amping, but haywood310 needed to be alerted to the fact that to do it correctly is much more involved than merely putting an external x/o and a second amp onto a pair of loudspeakers. The internal speaker-level x/o must be discarded, the outboard line-level x/o doing all the filtering. And that will NOT work if any of the drivers used in the speaker required any compensation network filtering to sound as the designer intended them to.
As I said above, Magnepan used to make their speakers so as to be easily bi-amped, and endorsed doing so. The .6 and earlier Maggies had parallel cross-overs and two pair of speaker cable connectors (which made bi-amping simple), but switched to series x/o’s for the .7 models (bi-amping them requires cutting into the x/o, installing another set of binding posts, etc.). Some of the monitoring loudspeakers used in recording studios come with filtering and a separate power amp for each driver, but they sound very different from audiophile speakers.
On the other hand, adding a sub or four to just about all loudspeakers provides many of the benefits of bi-amping, plus more. They present their own challenges to optimize in a room and system, of course.
