Yamaha YSP-1000

1. You'll still need a subwoofer.
2. You'll need 2 walls - left and right for reflecting the sound.
3. The 1000 sounds just ok. No idea what 2500 the earlier poster is referring to. The only Yamaha 2500 I know of is av amp.

Check out the KEF KIT100:
- http://www.kefinstanttheatre.com/