I just finished wiring my new speakers and receiver yesterday. One of my questions is why my subwoofer turns off when I set the receiver to the CD setting. Keep in mind, I'm a n00b in this stuff.
I'm using an RCA cable from the subwoofer output on the receiver to the standard input on the sub itself. According to the user manual for the sub, it says to use this input if you are using the "subwoofer output of an AV receiver or processor." I assume this is correct. (The other input is for when "using an external crossover." That's a little confusing, because doesn't my receiver function as the crossover by passing only low frequencies through the subwoofer output?)
I previously had a Yamaha RX-V1000, set up the same way (although I did not have a center channel or rear speakers) and the sub worked with all receiver settings, so I'm not sure why this one is turning off the sub when I switch to the CD setting.