Thursday, 29 January 2009

Algebraic Shift - Patch of the Day Update

A quick update to yesterday's Patch of the Day - Los Comparadores - pressing Doepfer's A-137-2 Wave Multiplier into event timing duties à la Plan B Model 17.

I mailed Dieter Doepfer to ask him whether a modification was possible to allow access to the individual outs of the A-137-2. He pointed me in the direction of this PDF of the module's PCB. I Should have read the product description properly! According to the website, an expander module is in planning and will go into production if there is enough demand. This could provide access to the pulse and saw outputs of each stage as well as toggle switches to take any one of the outputs out of the mix.

In the meantime, I removed the jumpers for all but the first shift unit's saws to test the timing range. Here's the result:

The left channel is the original timing pulse from a ramp LFO, the right is the shifted ramp. Keeping the input level to about 3, the useful delay range seems to be about from 3 to 7. Not bad considering it wasn't intended for this purpose!

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