Bob, the ML Depth does indeed provide (line level, not speaker cable) high-pass outputs, if so desired. At 40Hz, 70Hz, and "none". The "none" position is to daisy-chain another Depth onto the first. Then you use the high-pass outs on the last sub to go to your main amp.
My experience has been that I get best performance when I allow the main speakers, whatever they are, to run full range, and then bring in the sub just the slightest amount necessary, so that it's only noticed if it's suddenly turned off.
Naturally , phase, cut-off freq., and x-over slope must be properly adjusted to match the mains as well as the room.
The Depth also provides a second set of line level ins and outs to be driven by the LFE (low frequency effects) ouputs of a (separate) 5.1 processor. These inputs are signal sensing and mute the "regular" 2-channel inputs when you are playing surround material through a processor.
My experience has been that I get best performance when I allow the main speakers, whatever they are, to run full range, and then bring in the sub just the slightest amount necessary, so that it's only noticed if it's suddenly turned off.
Naturally , phase, cut-off freq., and x-over slope must be properly adjusted to match the mains as well as the room.
The Depth also provides a second set of line level ins and outs to be driven by the LFE (low frequency effects) ouputs of a (separate) 5.1 processor. These inputs are signal sensing and mute the "regular" 2-channel inputs when you are playing surround material through a processor.