How many watts are you pushing your Merlins with?

I auditioned a pair of 8W Welborne Laurels with my TSM-MX's. My room is similar to the size of yours although I have a considerable amount or wall/corner acoustic treatments. I never pulled out the SPL meter but can say that there was sufficient volume/dynamics for late night listening and just barely enough for normal listening levels. I would at least try these 16W amps if your normal listening levels are moderate.

good luck
tm

The Art Audio Carissa is a great amp and its power rating is very conservative. It will drive the VSM very well and will suffice for the TSM if you don't listen to extremely dynamic or head-banging music. Bobby, last time I checked, doesn't prefer Art Audio with his gear. I, on the other hand, love Art Audio with my Merlins. Bobby has a strong personal taste towards lush and warm electronics (e.g AA Capitole, Joule) and accessories (e.g Cardas) to mate with his speakers.

I've just ordered Bobby's Ars Sonum 30 Watt integrated for the VSM-MXe. I will be comparing it with my 100 Watt, Class A, Triode CAT JL2s - with which Bobby is quite familiar, having shown with CAT in previous years. So apparently, he thinks 30 Watts is more than sufficient for the VSM-MXe.