Rodabod wrote:Scott wrote:the three ways I've seen amps accomplish this are (in what I believe to be decreasing order of commonality)
And adjusting the HT voltage as per Ben's suggestion. This can be made to be constantly variable with a pot by using a MOSFET in a simple circuit for smaller amps.
I can't see the switch for adjusting the HT in the Orange schematic though - the switch at the power supply just appears to be a standby switch.
there's a switch just to the left of the rectifier diodes that selects a secondary tap from the power transformer.
Ben