Mystery jacks

[greasy]

I'm doing an expression pedal out mod on my frequency analyzer after reading all of the awesome stuff people on this board are doing with them especially colin and spectral Julian. My question is this: I found what I believe are switched stereo jacks in my box-o-tricks, but they look much more confusing than the stereo jacks in the tutorial (they had been mistakenly shipped to me instead of open stereo jacks once). I cannot find data sheets for them. Here's a pic of these bad boys:

http://http://www.banzaieffects.com/product.php?productid=18634&cat=328&page=1

so my question (finally) is what are each of the terminals on the jack? Are these even switched jacks? The ring is easy enough to figure out. Did I mention I'm fairly new at this stuff lol?

I asked Colin about it and he suggested testing them with a multimeter. As I do not have a multimeter, I was wondering if there is another reasonable way to figure it out? Thanks for any help everyone. This site has kept me up late into the night many a time.

cheers,
tim

[dnny]

Hi Tim - it must be your lucky day. i found one of those "bad boys" and measured it



this is what you see when you are looking from the back and the ground lid is pointing up

there are four switches S1, S2, S3 and S4

when the plug is connected the switches S2 and S4 are closed.
when there is nothing plugged switches S1 and S3 are closed.

G stands for Ground
T for Tip
R for Ring

when you see a cheap multimeter grab it.
i cant even sleep without my multimeter

HTH
daniel

[greasy]

Thank you so much for the help dnny, that's awesome! I have one more question, just to make sure I don't screw up the mod. When doing this: http://http://experimentalistsanonymous.com/board/viewtopic.php?t=148
I want to keep the pot connected to the circuit at all times so I can set a min value for the expression pedal when it's plugged in. I want to connect the centre lug of the pot to the tip, and the other 2 lugs to the middle terminal on each side of the jack. Is this correct? Let me know if there is something worng with this:) Thanks for the help everyone!

I also have one last question, sorry. I'm trying to convert my wah into a wah/expression pedal. To do this I want to use the out jack (I think it is a stereo switched jack) to connect to the expression in jack on the frequency analyzer. The jack would be directly connected to the pot on the crybaby wah. I'd be installing a toggle switch as well. Will this work or is there some fundemental problem with this? I'm not sure of the Ohms on the crybaby pot. The frequency analyzer has a 250k shift pot. I looked at the pic on the expression out tutorial where the expression pedal is using an open stereo jack. That's my reference, so let me know if there is some big thing I'm missing:)

thank you everyone for your patience with the newb:)
tim

[SpectralJulian]

I bought a Crybaby that was supposedly broken (it wasn't) for the same purposes, but it was for an expression for my delay.  Somehow I destroyed a pot trying to hook up the delay pot to the crybaby pot, so be careful.  But I didn't really know much about electronics and I wanted to be able to use both wah and expression at the same time.  I ended up just getting a volume pedal and using it (until I stepped WAY too hard on the pots of my delay pedal and completely wrecked it)

[SpectralJulian]

I think the crybaby uses a 500k pot btw.

[greasy]

cool, thanks for the info on the pot. I'll start on the wha mod as soon as I get one of the other projects done. Too many pedals on the desk and not enough on the pedalboard;)