I have a friend with a Yamaha RXV-659 who is having a problem with the zone 2 setup. He has the system working just fine with his 5 speakers in the house with the sub-woofer. When we followed the setup for zone 2 to connect his outside speaker to the zone 2 presence, we get only a little sound out of the speakers. When you turn the volume up you can only get enough to hear. The biggest problem is how to turn off the sub-woofer when using the zone 2 output. He was originally using the B output and had sound from the outside speakers, but still could not turn off the sub-woofer. What can you suggest.