I love Markbass amps but I find there speakers fart out very easily. That was the case when i bought the CMD102P. I used it it at two different gigs and back it went to the store. I do have a Markbass little mark II that i have had since 2007 and love it.
Fyi my experience was similar - I bought a MB CMD102P and for the one gig I used it on, I couldn't maintain stage volume without really lowering the bass and low mids. I returned it and asked for one in a factory sealed box, and that one was perfect. Buying a floor model or opened box (probably a customer return) is a recipe for trouble.
Also, as someone else pointed out, its subject to the limitations of 2x10's, so cranking the bass and low mids and then also cranking the VPF will make it more likely to fart out the amp or cabs at volume.