Hooking everything up for the first time

No, you need a regular IC with rca connectors. Not sure how you could even use speaker cable...

No, do not use speaker cable.

Purchase a standard analog interconnect with RCA plugs.

Same type of interconnect that you would use to connect a CD player to a receiver.

Rich

Looking at the rear of the Onkyo: http://www.jr.com/onkyo/pe/ONK_TXNR515/

It looks like you have a 'Pre Out Subwoofer' and a 'Line Out Zone 2' at the bottom, a little left of center.

Hook a set of interconnects with RCA ends from the 'Line Out Zone 2' into the power amp inputs. If that doesn't work, try the 'Pre Out Subwoofer'.

Chuck

You should be cautious about connecting from the 'Line out' outputs directly to the power amp. Generally, a line out output means it is not controlled by the volume control on the receiver, meaning you'd be sending the full-volume signal to the power amp, something you probably don't want.

The 'Pre-out' connections, on the other hand, should send the signal through the volume control on the receiver.

Sfar is right.

Chuck