Craig, very valuable input. Thank you.

Even if the sub is jumpered as you say, the sub's DSP will add a delay relative to the LFR's woofers. How do I compensate for that?

In a receiver with full subwoofer management, complete alignment can be achieved via the distance setting on the receiver and phase and polarity settings on the sub. My receiver is 2.0 with pre-outs so the only subwoofer management I have is the DSP crossover, and the sub's gain, phase and polarity controls.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated