I have an Onkyo SR 702 with Bose AM7. Bass was lousy so I bought a Yamaha HT215 to supplement it.
Problem is the SR702 has only one Pre-out for a Sub. Yamaha manual indicates if this is the case then I need to use the speaker Level lines from my Amp. But these are already in use for the AM7.
Is it OK to connect the only PRE AMP output pin jack from the SR702 with a Y connector to L&R Inputs on the Sub?