Kenwood VR-409 surround system clicks off when sound is turned up

Would like to know the cable I need to hook up and Ipod to my receiver, which is the source of music throughout multiple rooms in our house.

Assuming you aren't turning the volume knob past half way before the problem occurs, you most likely have a damaged speaker cable or a bad driver in one of your loudspeakers. (Once your volume knob has reached about half way the amplifier is producing its maximum efficiency.)

Note the position of your volume control when the clipping occurs, then remove one speaker at a time and raise the volume. If you identify a speaker as the culprit, inspect or replace the wire running to it and try it again. If you aren't able to find a bad speaker, the problem is internal and will need to be fixed at a repair shop.

Good Luck,
BB