I just got a Bose acoustiman 7 series which has three double cubes and a subwoofer. I want to hook it up to a Sony STR-D1011 receiver. The problem is that there are three speakers (each go to the base module) and then three wires are supposed to go the receiver. The receiver only has 2 front connections!! It has 2 center, and 2 rear as well, but the sound is very weak from them and the speaker is ment to be a front!