Mesa Mark 4 Output Tranny swap ?
Posted: Sun Jan 12, 2020 6:30 am
I'm thinking of swapping out my Mark 4 output transformer for a different transformer that also has a 16 Ohm speaker out tap AND installing an impedance selector switch. I hate using impedance mismatches as the amp gets duller and muddy so I'm not interested in using the 8 Ohm out with my 16 ohm 4x12 .
I'm not bothered about resale value as I will be keeping this amp until the day it dies. I'm no stranger to amp modding & circuit tweaks but I always prefer to be careful when dabbling with an amps power section.
All I want to know, is theoretically, could I whack a completely different output transformer in here such as a marshall plexi style transformer etc. without frying the amp ? The only thing that concerns me is the fact the amp is 6L6 and Simul-class ... I would also be happy to have the amp fully operating in AB Pentode so if the Simul class is the only thing affecting output tranny choices (+/- 16 ohm outs) then I'll happily ditch it.
I'm not bothered about resale value as I will be keeping this amp until the day it dies. I'm no stranger to amp modding & circuit tweaks but I always prefer to be careful when dabbling with an amps power section.
All I want to know, is theoretically, could I whack a completely different output transformer in here such as a marshall plexi style transformer etc. without frying the amp ? The only thing that concerns me is the fact the amp is 6L6 and Simul-class ... I would also be happy to have the amp fully operating in AB Pentode so if the Simul class is the only thing affecting output tranny choices (+/- 16 ohm outs) then I'll happily ditch it.