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Analog Synthesisers

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ASM1-Genie Prototype

Baseboard fitted in to case.
Prototype of PSU-1 installed with a toroidal transformer.
ASM-1 fitted and wired to power supply.

The recommended position for the ASM-1 is now in the top left-hand corner of the baseboard as viewed in this photo. This will make for a much shorter harness.

Front panel placed in the lid while being loaded with pots and switches.

Wiring begins on the panel. First all pot-pot wiring is put in.

I have adopted a wire-colour standard of

  • Red = +15V
  • Black = Ground
  • Yellow = -15V

The pots I have used here are NOT recommended for panel wiring as shown here as they have very flimsy and closely spaced legs. A superior pot with larger solder terminals is now being used.
Fixing rails for the panel can be seen at the top edge of the far side of the case

Wiring to the ASM-1 pcb in place.

I have used multi-strand hookup wire for all control voltage wires and single-core screened cable for all signal wires. There is a tinned copper wire rail run around the edge of the board (held in place by solder lugs fastened at each corner) and all screens are terminated to this rail. You can just see the wire about 1cm above the top edge of the pcb in the photo.

PCB-panel wiring going in. At this stage the cables are loosely bundled together in their approximate positions. Later they will be loomed up with lacing cord.

How the unit appears when fully assembled.

MIDI sockets have now been moved on to a separate panel in the rear of the case.
On/Off switch is now integrated in to the IEC socket seen bottom right of photo. This socket includes a DPDT mains rated switch and optional neon indicator and fuse.

The ASM-2 version of the Genie. In this picture you can see a MIDI-CV in the lower-left corner, a Raw-DC unit and toroidal transformer in the lower-right corner and the pile of spaghetti that goes with wiring up an ASM-x system!


Copyright 2000. All rights reserved.     Revised: February 27, 2015