Geek wrote:paart wrote:The ST-35 that I'm currently building will incorporate power supply caps in the range of 1100-1200 mfd. However, I'm also using an external "ramp-up" device, 3 amp diodes, bleeder resistors, and I'll do lots of careful testing.
Which will save your diodes on charge, but not your transformer in the long run.
Dude, seriously, you do not need that much cap.
Cheers!
I've already run this setup in another amp, and the power transformer is fine. Again, I use an external circuit that slowly increases the AC line voltage over about 30 seconds, which would be similar to bringing it up on a variac. The total running load on the transformer is about the same as it would be without the extra capacitance. The reason that I kept the capacitance in the 1100-1200mfd range is that is about the physical limit that will fit on the original chassis. I've been tinkering with another ST-35, that being built on a Soundtastic chassis which will have quite a bit more!
Seriously, I do need that much. I've compared and heard the differance many times.
Regards,
---ART---