Anybody finish one of these yet?
Actually my 312s are working 100%, but my 990/M1's are in a state of...umm... underpower-ment. Just as I got them working I had to use (read: scavenge) the toroid and I hooked up another (slightly underpowered) one I had lying around which made phantom not play nice with the preamps at 24V so I had to lower the supply voltage (or not use condensers) until a new power toroid arrives.
When connecting the switch daughter board to the main board, where does the "g" (ground) connection go? Is it there to provide a shield ground when using shielded wire and only connected on one end?
That's exactly it. May or may not be necessary to shield the wire, but better safe than sorry. The trick is to use a piece of quad mic cable and ground the shield. I use canare cuz I have a bunch of it, the only tricky thing with that is that there are 2 whites and 2 blues so you have to keep track of which is which. The mogami neglex quad console cable would be better in that respect because each wire is a different color and thus easier to track.
Is your PSU 317 337 based? I would like a copy of the etch files if possible.
I made two different layouts(same basic layout, one with variable regs, one with fixed... only tested the variable so far). The plan was to get some fabbed and maybe offer them to those of you who need 4 rail PSUs but I'm not 100% done with it yet. Anyway, I'll email the etch files/schematic to you, does your email start with "aw"?
If you guys want I can email them to lucas and you guys can get them etched from him.
Also, mikefatom is selling a 4-rail PSU. The design looks good, a bit like what I had in mind for a 2 sided board. Looks a bit like JLMs, but I like how the wires go out to the left (if you mount it on the right of the case, makes the wiring neater). The PCB is fairly priced, but you may be able to source the parts for less than the kits. I've never used one so can't endorse it or anything, but it is out there and it should work well for a few channels if planned/built well.
I really need to get cracking on some docs and help you guys out. Some of what I think should be noted while building is in the BOM notes. I've also sent a lot of info to the few people who have emailed me with questions. Tomorrow I'm going to sift through those and the schematic to write out a simple PDF so you guys have something to read through while building, and again, if you're stuck post here and/or PM me.
hope that helps!