I'm pretty sure a JTM45 is 30-35 watts, but that's clean. It will put out probably 45-55 watts cranked. Just like a JMP 50 watter, will put out 75 when cranked.
I've read somewhere that they put out about 30 watts.
also, running a 8ohm load for the 16ohms output on the amp (or a 4 ohm load from the 8 ohm outut) will increase the power and blow the speakers faster
An impedance mismatch either way with a tube amp will cause a reduction in power output. Bob
no, thats simply not correct in this case since the primary impedance is way high