Velodyne DD-15

Frequency/Phase was set using their setup mechanism (it ships with the microphone and there's a video out to see the curves etc.).

Level is likely around 1/3 most of the time. The remote allows different level sets based on what you're listening to. 1/3-1/2 is all we need for the room it's in. It's overkill but I got it for a killer price. The neighbours don't like it higher than that... pops the plaster off their drywall screws ;-)

XLR connected to an Anthem AVM-50 [equivalent... upgraded the guts].

Mains are Totem Forest.

Crossover at 80Hz.

Am not using a trigger on the sub as it senses input and auto powers. If that didn't exist, I would use a trigger.