Summary: I have a system set up for 7.2 surround and an Onkyo receiver that is capable of 9.2 surround(TX-NR818) with several Polk satellite speakers and wanted to up my theater to 9.2 surround. Talked with an Crutchfield advisor (Tommy) and he suggested a couple of these tower speakers as my right and left mains. Wow what a difference, the two mains give my set up a fuller(depth) sound from the front. Thanks Crutchfield and Tommy.
Summary: These speakers were relatively inexpensive and sound great! Not quite enough bass but pair well with a Polk subwoofer that I already had. Probably would not use these alone without the additional bass butt overall they sound crisp and pack a nice punch with my Sony receiver. Love how they sound for movies and TV as well as music.
Summary: The TSi400's are great for the price and in this case - you DO get what you paid for. Sound is good, bass is lacking (so DO get a Sub). I use these as surrounds and they perform just fine but they do NOT sound near as good as my Klipsch F-30's. The Combo is what gives me GREAT sound.
Pros: Can NOT beat them at that price.
Cons: Sound OK but not the Best. Use them as surrounds and mix them with an "audiophile quality" Main and add a Sub. Then you will be very Happy!
Summary: I have paired these with a Denon 4520CI receiver, Polk FXiA6 surrounds, Polk PSW-111 sub, and an old Infinity Video-1 (early generation center speaker) and they sound great. They provide a full, rich sound and do not overwhelm the center or surround channels, though that is heavily influenced by the receiver's level settings, I am sure. They have a nice range and reproduce music, vocals/voice, and sound effects well.