#1 PT15 se A2 operation
Posted: Thu Mar 02, 2023 11:44 am
Recently cobbled a 2E22 se A2 amp (g1+g2 driven) - excellent results. On a whim I substituted PT15's - now like many, I've used PT15's in class A with good results but not A2.
Taking care not to overrun g1, results are comparable to the 2E22. Also careful to connect g3 to filament mid point or can oscillate if connected to anode.
Anyone else tried this with PT15?
atb
David
Taking care not to overrun g1, results are comparable to the 2E22. Also careful to connect g3 to filament mid point or can oscillate if connected to anode.
Anyone else tried this with PT15?
atb
David