I have a Yamaha RX-V659 receiver hooked to 7.1 polk audio speaker/subwoofer and would like to connect an eight channel audio mixer Samson MDR 8 to it. How would i connect it? What cables would be needed to connect it? The rear panel of the receiver does not show any indicator for connecting an audio mixer. The audio mixer has quater inch left/right mix outputs jacks which normally i hook it to a powered speaker. It also has Control room left/right quater inch output jacks to connect to a astudio monitor system.