Check this schematic out for the critically acclaimed (and very popular with big stage acts!) Friedman BE-100.
It's a fairly standard hot-rodded Marshall design with a few interesting twists - the "Sat" clipping control off the cathode follower and the FX loop design (which I believe is the MetroAmps loop design).
Also check out the way the global negative feedback is applied - it's level changes depending on which impedance tap the amp is set to output to. This could be intentional OR it could be a layout error. I've checked this on a real BE-100 and it is actually wired like that!
So if you select the 4 ohm tap you get less? Can you safely run that into an 8 ohm cab?
ReplyDeletehi, do you have the schematic of the zvex lo-fi loop junky ?
ReplyDeleteFred, do you have a bigger version of the schematic? I can't read anything...
ReplyDelete