I just figured out a way to do this. Don’t laugh, it works!
Patch the 2TRK Out to Stereo 1 In using short, 1/4 inch balanced jumpers.
Assign Stereo 1 to Mix 9-10 and un-assign it from L/R
Assign the Alt-Out Source to Mix 9-10
Drive the Delay Speakers off the Alt Out Jacks
Adjust the delay time at the Mix 9-10 Process Screen
The main L/R Fader will now control the mains and the delay speakers. You can adjust the relative gain of the delayed speakers with the Alt Volume Control.
mamerica
Mpls, MN USA