Posted: Mon May 15, 2006 6:52 pm
The Simul-Satellite dos not have a Triode/Pentode switch. the outer tube sockets are wired for Pentode/Class AB operation but they have a weird bias voltage that makes them behave somewhat like the Class A/Triode sockets on earlier Mesa Simul-Class amps (like the MKIIB, MKIIC, and early MKIII's).Russ wrote:Cool I will have to start shopping for one.
As far as the implementation of the 6V6 you have to run in triode tweed according to the manual. I would assume that they go in the outer sockets also as the tweed runs the outer pair cut down. If you are not in triode tweed then you will surely fry something.
The MKIV does have a Pentode/Triode switch and I assume that when that amp is switched to Triode mode the outer sockets are indeed in a true Class A/Triode configuration.
And the MKIV manual says nothing about needing the outer pair switched to triode mode when using 6V6's in that amp. All it says is that the amp should be in Tweed Power mode (not Full Power) as well as in Simul-Class mode (not Class A mode). My guess is that triode mode for the outer pair is probably not a good idea with 6V6's in there. It also says that an 8 ohm speaker should be plugged into the 4 ohm speaker output so that the 6V6 tubes won't burn out too quickly. They also say that they won't warranty it to work.