Jack For Remote Pot?

[smallbearelec]

I want to stock an appropriate jack for the mod in this piece:

http://www.geofex.com/Article_Folders/xprnped.htm

I was not clear whether I would need one NC contact (like Switchcraft #13B) or two NC contacts (like Switchcraft #14B.)

Help from someone who has done this, or R. G.?

[joegagan]

steve, i think you linked to the  quarter inch?

i have had field durability problems with 1/8" switching jacks due to the small contacts- they lose their spring/clamping in even light use over time.. i recommend 1/4" in contrast to RG's recommendation in the article.

edit- switchcraft doesn't seem to offer the open frame 1/8"jacks any more ( the ones i referred to), but even the current ones available have a 5000 cycle duty listing vs. the 10,000 listed for their 1/4".

[joegagan]

14b looks like it would do what RG is referring to with one stereo cord with ground shield.

[R.G.]

You need a jack which has a NC contact on both Tip and Ring. You have to break two out of the three wires to the internal pot to fully disable it in the general case.

Joe - I wasn't aware of the field issues with the 1/8" jacks. I don't get a lot of time setting up and tearing down stage setups these days. 

In any case where you are going to have wear issues, there are two paths: either make the things very durable under the wear, or make them easily replaceable.  For this application, the 1/8" jacks may fit in places where a 1/4" won't. This is one reason I recommended them. But the 1/4" jacks may be the best choice for reliability if you can fit them in the box. If not, you may need something like a rotating magazine of 1/8" jacks.

[joegagan]

You need a jack which has a NC contact on both Tip and Ring.

the 14B switchcraft does that.

RG, when can we expect the geofex tut on the four easiest methods of constructing a rotating 1/8"jack magazine?   

[smallbearelec]

Guys, thank you! Will place order shortly.

Regards
SD