5.25-inch dynamic balance aerated polypropylene composite drivers Built-in 10-inch subwoofer for true full-range performance 1-inch high performance ring radiator tweeter Aerated Polypropylene Midranges..
Patented* Bass Porting Techniques Power Portà Power Portà Plus+ ARC Port..
Patented* Bass Porting Techniques Power Portà Power Portà Plus+ ARC Port Dynamic Balance and Klippel Optimization..
Deep bass response Mirrored image driver arrays and Ring Radiator Tweeter SACD and DVD-Audio sources Three-dimensional imaging..
The TSi400 is the middle of the pack. If you don't need the extra bass response or power handling, the TSi400 is the speaker for you..
The Polk Audio TSi300 Floorstanding Speakers can be used as the front channels in a home theater set-up or as the main speakers in a music system..