Yahoo Groups archive

Doepfer

Index last updated: 2026-04-29 00:15 UTC

Message

AW: [Doepfer_a100] Re: A-156 Dual Quantizer Transpose issue

2015-03-20 by yahoo@doepfer.de

> This is what I did: http://www.pulsepsycle.nl/wp-content/uploads/doepfer_a156.jpg
>  http://www.pulsepsycle.nl/wp-content/uploads/doepf...
> View on www.pulsepsycle.nl Preview by Yahoo
>
>
>
>
>
> Now when I apply 1 volt to the upper Quantizer CV In it reads 1.006 volt at the CV Out instead of 0.924 volt so that's all right.
> But after adding another 2 volt at Transpose CV In reads 2.918 volt so that's not right. Without the 330K resistor it
> then reads 2.836 volt.
>
> I didn't solder anything yet. Just used clamps and cables to test.
>
> Best regards,
>
> Karel.

It should be possible to correct this by adjusting P3 (that's the spindle trimmer at the lower edge of the pcb, next to the TL062).
It is used to adjust the input scale of the transpose input.

Best wishes
Dieter Doepfer

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.