Just received my Series III 32r in the mail and am getting it setup for live use. My question is, where on my RM16 I would use the mono output with a low pass filter to run my subs. On the 32r, there is no mono output. What is the recommended way to run a separate output to my subs. I like the control of having my lows on a fader so I can push them in a show without messing with my eq. Thanks!!!