I dug out my subs' manuals to refresh my memeory in what I have now.

Audio System - vintage Velo Servo F1000 (connected using Speaker Level Ins & Outs: High Pass Fixed - 85Hz 6dB slope. I have the Low Pass set at 80Hz to blend with the AX2s;

HT System - new twin Velo DLS-3750Rs (connected from Denon 2X Sub Outs to sub LFEs In): High Pass Selectable - 80Hz or 100 Hz 6 dB slope; and

New Velo EQ-Max line - High Pass Fixed 80 Hz.

These features do not appear in all of their other product lines however.

So with my legacy type system, the EQ-Max may be a good option, although no decisions have been made yet....

Tom
Comox, BC