Audio Systems: Conneting two Receivers, onkyo tx, rca jacks

Question
Can I (or how to) connect my Onkyo TX-SR700 'Pre Out' (6-jacks)Receiver (no Speakers attached), to my Sony STR-K7000 'Multi Ch In' (6-jacks)which has speakers attached - to allow using the components attached to the Onkyo unit (ex. Phono, Cassett player)?
(ie trying to allow playing the Onkyo's audio thru the Sony, due to limited jacks on the Sony. Onkyo would only be turned on when the Phono/turntable or Cassett is needed).
Thanks,
Ward

Answer
well, it should work... as long as you're going from the preamp outs, and you select the "Multi In" on the Sony when you want to hear the Onkyo & components. Before firing it up, make sure the volume is down on both units.

Another way (a bit simpler) would be to just use a "tape out" set of RCA jacks (Onkyo) to an auxiliary input on the Sony. If you're listening to stereo components, it would be pointless to use all of those cables to only feed 2 channels. If you want to use and Pro Logic effects, just use them on the Sony.