Hi folks,
I just finish my ST35. No incident, the amp works OK and sound good so far.
I measure the B+ and it's abit high on 415V. The power kine is 245VAC (i'm in Australia) and the power trans is Edcor XPWR005-120/240. Secondary spec of the trans rated at 660V CT 180mA. Also using Hammond 156R inductor rated at 1.5H, 200mA, 56 Ohm.
I think this a bit hard on the tubes. I tried to dial the bias, but it can't get lower than 35mA. My calc the tubes dissipate at 14W which is higher than 12W rating for EL84.
Anyone know how to lower the B+ ?
Thanks in advance