I have recently ordered a Sherwood (RD-7108?) receiver, and have planned on using this with PC speakers for console gaming, in a racing cockpit. I guess I bought without thinking too far ahead, but was planning on buying the Logitech Z-640 5.1 speaker set to use with the receiver. Now for a little background. I came up with this very cheap idea based on the Creative brand speakers I have now, they use a wired remote to control the volume of the the entire speaker system. Logitech Z-640's, on the other hand, adjust the volume via a knob on the center speaker. This is where the problem lies. I need to know if the center Logitech speaker can be powered by a receiver, and still control the volume of the subwoofer. The setup would go as follows, 2 left/right speakers, 2 surround, and one center plugged into the appropriate place in the receiver. The subwoofer would be plugged into the subwoofer preamp out from the receiver. Then plug the "extra" cord from the center speaker (this is assuming there is an extra cord that controls the volume of the subwoofer). Is this going to work? I am almost positive it would work with my Creative speakers, because the remote volume control is not fed through a speaker. But does the Logitech Z-640 have the extra wire coming from the center speaker this way to control it, or is it all integrated into some crazy random plug? Thanks for reading this lengthy post, and I hope someone can help!