Is anyone using Harbeth speakers with a sub-woofer


I talked to a dealer today and he said the Compact-7 works good with subs. Does anyone has any personal experience with this.
taters
I am using the SHL5s with a REL R505. Set up was quick and mine has been a big improvment over listening without a sub. I set it up one time over a year ago, and have never had to move it since.
I'm waiting for Compact 7's to use with a REL B3. Has anyone had experience with the device offered on Audiogon to integrate subs with monitors? One of the Harbeth dealers was offering it with Compact 7's
I used Compact 7's with REL Strata III for awhile. Worked great. One of the best sounds I remember in that room, 12' X 18'
I use the SHL5's with a PMC TLE1 subwoofer in a 11'x17'x8' room. Works great.
I use compact 7-es3 with Rel B2 sub. upgrade the stock cable with Synergistic research tesla rel spec ref.