Custom Metalwork Designs for Oberheim SEM modules.

Obie-1.pdf  This is the first design. The chassis is more complicated but designed to either be a desktop or rack unit. Because of the size of the SEM there's not enough room to put two next to each other and follow the standard 19" rack rules. This design uses one SEM and a removable panel for the jacks and connectors. The power supply can be internal or external. The PDF file has all metalwork drawings and a sample artwork drawing for the panel layout I was going to use. The file is about 1meg in size and with the right printer, you can print B-size drawings (11x17). The artwork can be printed to Avery full-page label stock (or Misco #WL8674) or to Xylar (xeroxable mylar) and a silk-screen could be burned.

Obie-2.pdf   This is a newer design. In this version the SEM is attached to one 5U high panel. The jacks and connectors are all on this panel. I've gone for a buss arrangement for power etc. The design allows for the use of only the rack panel if cost is a problem. The chassis can be left off and the rack can provide the protection for the SEM. To tabletop this unit, wood could be added to the sides, below the rack flange (the wood could be slotted to hold the ears. The chassis is about 4"deep so the power supply can be internal. There is a hole punched in the rear to accept the standard panel mounted midi-type connectors that can be used for an external power supply. This design uses these type of jacks for CV and GATE busses used in my system (I have a 2-voice body with a programmer and sequencer etc. that will fan out to these units).

Obie-3.pdf This is The latest design. This version is similar to the very first except that the chassis is now made of separate parts that are mirrors of each other. This allows the making of more parts, lowering the initial startup cost (many metal shops require a minimum part order to pay for setup fees). Also with the use of a rear panel, access to the internal wiring is made easier. The rackears can be omitted and wood panels used to create a desktop unit or a larger system like the one shown below. The chassis can be assembled with two of the large blank panels creating a project chassis well suited for large custom modules (i.e.. Sequencers)

NOTE: I AM CURRENTLY NOT SELLING METALWORK! These are metalwork plans that any small metal shop or proto house can bang out for you. These plans are free and as long as you don't go and mass produce them without permission. You can use them as you will. If I'm forced to buy more pieces than I can use for myself (most metal shops will force you into at lease a 10pc quantity) I will sell the excess.

Here's what I'm going to do with mine. Sort of the mini T.O.N.T.O. thing. The controller for the rig is a 2-voice chassis with a 4-voice programmer and 8-step sequencer on board. The empty panel will have joysticks, sliders and extra circuitry I feel I need (inverters, lags, mixers/summers etc.). I have 4 Kenton Pro-solos I wanted to fit in but they were too big for the space. I will post pictures here when it's done.

Questions or Comments:

James Husted
Seattle, WA