I recently had a REL Strata III in my system which includes Harbeth Compact 7's and Naim electronics. My new listening room is large and I find the Harbeths, which I adore, to sound somewhat thin in this environment--thus the consideration of a sub. It worked fabulously. Though rather cynical about the claims of audiophiles and that which they read, I found the sub to enhance not only the bass but increasing soundstage presentation and internal detail. Highly recommended.
mrd
mrd