Jack info

[Bernardduur]

OK, I got this output jack that also shuts down the internal speaker of a unit.

This jack has seven leads; I want to duplicate it with a normal 1/4 jack (so I can more easily play it over my amp) but what does the 7 leads do??

Here's a drawing of it:

[The Tone God]

Well without manufacture and part number info, if you had it I would then say seek out the datasheet, anything would just be a guess. How about just using your DMM and a piece of paper to figure it out yourself ?

Andrew

[Bernardduur]

Did it...... could not find it.....

[RDV]

could not find it.....

Your DMM?

RDV

[Bernardduur]

No, it gives weird read-outs. I thought maybe this is a stock jack, much used, and easy to replace......

The top two are connected to the middlr four (with some small resistance) so I guess there are some resistors somewhere wich makes the readout more problematic.

[The Tone God]

Some of the contacts maybe contacted to switches operated by the physical plug insertion that make no contact with the jacks.

Grab a plug, DMM, and a pencil and paper. Get measuring.

Andrew

[Bernardduur]

I did..... I just can't get it; need to unsolder it to get good readouts.

Ah well, I just add a switch in

[cx_deluxe]

I have a very similar jack that I pulled from a sony tape deck.  1/4 closed circuit headphone jack.  Not all of the pins were connected, even in its original application.  Inside the jack each pin was connected to a plate, some of the plates were connected to each other.  In the end, I just physically poked around until I found sleeve, ring and tip, and recycled the thing.  It seems to work fine.  My impression was that some of the pins were duplicates.  My guess is that it acts like two "stereo" jacks at once: with the male plug removed the circuit is closed to speaker.  Plugging it in breaks the circuit to speaker and closes the circuit to headphone.  I doubt you could duplicate this function with a "normal" jack.  My guess would be that you could use a "normal" and a toggle.  Then again, I'm probably talking out my @ss.   

[Paul Perry (Frostwave)]

Those 'small resistances' are probably the internal speaker.

[Bernardduur]

Thanks all! I just added a small switch next to the jack; it is kinda handy, no I have my own monitor.