Two 100µF in series for the mains (200µF).
Two 32µF in series for the screens (64µF).
100µF on the phase inverter.
Two 32µF on the pre-amp taps.

Right, and this is important for getting rid of the AC ripple once it's been rectified. This helps reduce noise throughout the entire amp.harddriver wrote: ↑Thu Jul 21, 2022 4:57 pm I found my Metro layout diagram the other day from the 12 Series instructions and the two 100uf axial cap are indeed in series which would make 200uf on the mains.
I've tried different filtering here, and 64µF does something quite magical to the feel of the amp. I'll never change that filtering on the screensharddriver wrote: ↑Thu Jul 21, 2022 4:57 pmThe two screens 32uf axial caps are also in series would make 64uf on the screens.
I tend to believe what Friedman says about that, and he says it was the 50µF/50µF in series (total 100µF).harddriver wrote: ↑Thu Jul 21, 2022 4:57 pmThere was some contention on Metro as to whether or not 12301 had 64uf or the 100uf PI filtering but if you look at the back of Ed's amp in the VHII pics it is a dual 50/50 can cap running at 100uf.
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