Each voice card draws approximately 500mA from +12V and another 500mA from -12V.
My current Doepfer PSU supplies 1200mA per rail, so I can drive two cards from that.
Also, I see that the rails sag a bit, to 11.6V when fully loaded. That may be trimmed but who knows.
Anyway, time to start looking for other solutions. Here are some quick google results:
DIY High Power Supply
https://aisynthesis.com/eurorack-high-power-supply-build-guide/
dual 2.5A 12V and single 2.5A -12V. Uses an off-the-shelf regulator module, URB2412LD-30WR3 from Hi-Link: https://www.hlktech.net/index.php?id=165, which is able to step down up to 24W to 12V. It's powered from a 10.5V 6.92Amp PSU
100W and 70W PSUs with some of the same style but with additional circuitry
https://konstantlab.audio/shop/hammerpwr-100w-eurorack-modular-power-supply/
https://konstantlab.audio/shop/seventypwr-70w-eurorack-modular-power-supply/
Another 5A variant:
https://www.exploding-shed.com/befaco-trolley-bus/100453
The issue with all these are that they don't give me 5A on the -12V rail.
A nifty breadboard version:
https://www.exploding-shed.com/clacktronics-proto-psu/100597
Another breadboard version that looks like it can be used for my dual ground standard (outer power rails are +/-12V, inner are ground)
https://www.exploding-shed.com/transient-modules-breadboard-supply/100407
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I consider using separate regulators near every voice card.
Perhaps an URA2412LD-20WR3 can be used, it's supposedly +/-12V, +/-833mA, which is plenty for each channel.
There is also a similar URB24_YMD-20WR3 which has half the footprint. I can't see what else is different.
