HP greedy modules.

A few months ago, Stretta brought up the notion of modules having a per-HP cost. Whilst the idea of choosing lower HP, or more functionally dense modules where possible is a good one, I came up with an alternative. Buying used cases is one obvious way to bring down the per-hp module tax, and they turn up fairly regularly at analogue haven & noisebug.

Something that seems to have been forgotten however, is that there are still a lot of the older ‘v1′ doepfer cases out there.
These are pretty much identical to the newer variant, but they have a smaller power supply, than can only supply 650mA of current. These tend to get sold off as ‘inferior’, and carry an even lower cost when sold these days.

I picked up one recently to house some of my HP hungry modules. As long as you keep in mind the power limitation, and do some simple addition to make sure you don’t exceed it, they remain a cost effective way to house those wide modules.

Here’s what I squeezed into mine:

(almost) fully populated.

A-188-2 tapped BBD (30HP, 120mA)
A-143-1 Complex envelope generator/LFO (28HP, 70mA)
A-113 subharmonic generator (26HP, 150mA)
A-128 fixed filter bank (20HP, 20mA)
A-101-3 12 stage vactrol phaser (30HP, 50mA)
A-127 triple resonance filter (28HP, 100mA)

And I still had more than enough room for a multiple.
Total power usage: 510mA. Didn’t even come close to running out.

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Tags: A101-3, A113, A127, A128, A143-1, A188-2, doepfer, eurorack