I would recommend adding a few Tactile Transducers to the mix. I was wanting more bass and after adding one at each end of the couch I'm totally satisifed.
Paul
A couple of places in fort worth that have bose on display for an A-B comparison.
1.) Toby Speakers about 1 to 2 miles north of I-35 on Montgomery on the west side. He builds custom speakers that sound very good and will sit around and BS with you if you want to.
2.) Sound Idea about 4...
I would say yes, that Bi-amping your speakers is an improvement.
I am certain that to fully take advantage of having your speakers bi-amped you will need an ACTIVE crossover. That is, a cross over in place BEFORE the amps. You would take the pre outs from your preamp into the active...
Yes, I know that you can build a killer sub for under 500 bucks, because I did it!
You can build one for even less if you dont use PR's. A sonosub with either a a shiva, tempest, Titan, Stryke should be an improvement over your Klipsch.
I'm driving my sub with an older Carver TFM-35 bridged...