i've an rxv1300 and have my older speakers wired to b terminals. i've gone into the set up and changed the b speakers to remote. the b speakers are hooked up okay in the garage, and they play. i un-select the a speakers when i play the speakers in the garage, but the sub stays active. at this time i need to manually shut the sub off. is this a failing of the yammi, or have i missed something simple? the sub is an ep350, connected with a + and - cable to the receiver.