Finished my S11 last night, and aside from having initially put the wrong value in R10 (somehow pulled 4.53k instead of 4.99k out of my stack of baggies of metal film resistors), everything went well.
I followed the BOM pretty closely. I don't recall having to substitute anything except the recommended main reservoir capacitors were unavailable from mouser so i ordered a single 2700uf panasonic TS-HA series cap - ECO-S1JA272BA.
The only thing unusual about my implementation is that i built an AC line filter w/ common-mode choke, etc, as borrowed from one of tangent's schematics, on a separate board (which also carries a 12va split-bobbin transformer for some other power supply voltages i need - hooked up to a different regulator board).
I'm using a 100va Antek 32v toroid.
At this point, the Sigma11 isn't hooked up to any load, and neither is the other power board in the box.
I tried going through the voltage test points but this ultimately was inconclusive because I'm getting a bit over 45v after rectification rather than the 48v shown in the pdf for 36v output. I'm getting almost exactly 33vac from the transformer, fwiw.
My Wavetek 238 tells me there is 3.4mv of ripple, my Craftsman 81427 (aka Fluke 15b) tells me 2.8mv.
