I've got in-wall M2's and would like more bass... I got one of the first sets of in-wall speakers and M2's were the only ones available at the time. However, I love the quality of the sound enough to not change them up to M22's or M3's. They are there for background music. If I want to shake the foundation, I turn up the HT in the other room. If you'd like pics and install faux pas, PM me your email and I'l send you some.

Scott

My HT