Hooking up Sony HT-CT100 soundbar to a Yamaha 663 receiver

The CT100's included sub IS the receiver as well (inside). The soundbar was made specifically for it's included sub, no outside sources like your receiver is needed. Plus the proprietary cable of the CT100 is a computer 9-pin serial cable, there is NO RECEIVER on the market that even has that and if so, was not made for the CT100, that's why the CT100 has a SUB/receiver included with the purchase/bundle.

Writer didnt ask,,,, but I have to.

WHY are you wanting to run the Sony CT-100 thru a receiver ????????

Cheers
Davyo

Get either the Infinity Primus PC250 or PC350 for the center:
PC250: http://www.vanns.com/shop/servlet/it...y-primus-pc250
PC350: http://www.onecall.com/ProductDetails.aspx?id=34006
The PC350 is hard to find right now but Vanns has a customer return if you want to save a few $s: http://www.vanns.com/shop/servlet/it...y-primus-pc350

And get a pair of Primus P162, P152, or P142 for surround. You'll also need a subwoofer and you're set.

These are decent speakers and will sound much much better than the CT-100.

Edit: Or, if you really want to fill a large room, look for a pair of Primus P362 floorstanding speakers and move your P162s to the rear.