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The Dub Discussion Board » DUB PRODUCTION » EFFECTS / SOUND MANIPULATION » REVERB » SPRING REVERB » FISHER K-10 SPACEXPANDER » Poetentiometer for Fisher Spacexpander Spring Reverb

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Yesus Dread

Posted on Monday, June 24, 2002 - 06:45 am:

Greetings,

i man wondering if anyone is familiar with the Fisher "Spacexpander" Spring Reverb Unit, and how to attach a potentiometer to it. The unit has a jack labeled "Control Cable Jack". i'm assuming that i could solder the potentiometer to a cord and run it into the jack and get flexability this way. i'm curious though, what connects to what as far as the 3 prongs on the potentiometer being soldered to ground and hot part of cord.
hmmmmm.
any reply is helpful...i give thanks.

Looter

Posted on Monday, June 24, 2002 - 11:50 pm:

Maybe the guy that's selling one on here will know...

Looter

Posted on Thursday, September 05, 2002 - 12:23 am:

Hey Daniel: You know anything about this control cable on the fisher?

interruptor

Posted on Thursday, September 05, 2002 - 09:52 am:

yes i do! will check and tell you right here..

interruptor

Posted on Monday, September 09, 2002 - 11:48 am:

you need the following ingredients

- Stereo Headphone Jack plug
- A 250KOhm Potentiometer (250K is the figure I found in the user manual. When I measured the resistor on my own Spacexpander it was only 198K! Probably the resistor value shifted that far over the almost 40 years this unit is old now?)

- Use a 3 wire cable and connect as follows:
the sliding contact of the potentiometer goes to the tip contact of your plug. The two other pins of the potentiometer are connected to the ring contacts of the plug.

- The original Spacexpander control uses a potentiometer with an additional switch: If you pull-out the potentiometer knob, the sliding contact is shorted to the second ring of the plug. (The one which is further away from the tip) Thus the reverb is muted completely.

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