You can get an inwall sub from Sonance. Not sure if Revel has one.
Otherwise a small Sunfire would do the trick. Outlaw Audio has good ones cheap too. Online only.
Don't worry about bothering me and my staff.
We are here to help when we can.
The advantage of AVRev.com over other home theater forums is that you get TRUE EXPERTS posting and giving advice here. Bob Hodas is the most accomplished recording studio tuner. David DelGrosso put DTS on the map. I have worked with Mark Levinson at Cello and Christopher Hansen Ltd. Kevin Miller is the LEAD video calibration instuctor for the ISF. That's only a start.
Jerry Del Colliano