signature E setup 5.0 or 5.1 ?

Hello,
sorry for my english...

Im searching for a new surround system:
2 x signature s50e
2 x signature s10e
1 x signature s35e

My AV-Receiver is ready for bi-amp-wiring the front speaker.

Is this Setup ok, or do I need a sub woofer?
Or better take the s55e?

Comments