thanx tubegroover
Merlin vsm is known to be driven easly (89db 8ohms)
I think my room is still small :)
Merlins may require SS 175 watts or tube 60 watts to be driven well.
many many years ago when i buy a speaker , i look at the maximum watts recommended for the speaker by the manufacturer,
And used to buy a matching amplifier with more watts than recommended , and it used to work, i think its the same with Merlins.
Less watts will drive ,but not with full potential.
Or do i need a speaker with bigger/more driver in this room ?