A:AnswerAnything, honestly, that has a low-pass cut because the R-15pm doesn't include that with its sub-out port.
Obviously the cheapest Klipsch 10-inch is great and they're on sale now. The 12 would be overkill.
A:Answershort answer, no. both the sound bar and speakers bluetooth mode are a receive only devices. and bluetooth needs a transmit device and receive device. there are ways to make it work but it is not ideal and the sound wouldn't time up correctly.
A:AnswerIt does have a input for CD player (AUX) also has optical, phono (the red and white cables) and bluetooth. The knob on the back is for the volume but the remote control it comes with has options to turn the bass up and down