How to connect the feedback pots on mb-6582

MIDIbox SID
1

I’m almost finished building my mb-6582.

It works great but I want to add the feedback pots on the back.

I have 4 dual gang pots. Maybe I overlooked it somewhere, but I can’t find where to connect the pins on the pots to.

The pots have 2 x 3 pins each. Where do I connect the pins to?

I suppose I have to connect them to the J3 and J23 pins on the board.

There’s in, gnd and out. Which pin on the pot do I connect to which pin on the pcb?

2

HI

You can find good information here  :wink:

http://www.midibox.org/forum/index.php?topic=7662.msg64774#msg64774

good luck!!! boop’s

3

That’s the help I needed. Thanks !

4

also bottom of this page: http://www.midibox.org/dokuwiki/wilba_mb_6582

How are the attentuating pots pictured on the rear of the chassis connected?

These are not volume controls. These are for using feedback to get the SID to have distortion, or with Filter Ext In turned on, extra resonance when using band-pass, or LP+BP or HP+BP. They are dual-gang pots, connected to J3_SIDx and J23_SIDx. Input goes to wiper pin (middle pin). Ground goes to left pin (facing towards pot shaft, pins pointing down). Output goes to right pin (facing towards pot shaft, pins pointing down).