impedance switch

[DocJames]

Hey, just want to have a little confirmation on the impedance switch. For my rocket build, I purchased one of those electroswitches that is seen in Franchesca. Looking back through the posts to get a idea of how it works, I found a topic where Ron explains that these switches have 4 lugs of 3 gangs (for a total of 12 gangs circling the switch). Each of these lugs have an output jumper as well. To wire it, you use the first lug , and correspond the inputs with the directly opposite lug (ex: pin 1 to pin 7, pin 2 to pin 8, etc.). Now, here's the question. It looks like the wrong type of switch was sent because, I have 4 gangs to every output jumper, so I'm assuming this switch has 3 lugs of 4 gangs. Will this make a difference if I wire up only 3 of the gangs in each lug, leaving an open gang from each lug. As well, because there's only 3 lugs of 4 gangs, they won't be completely opposite from each other, will that make a difference.

Ok, was that confusing enough? I hope that makes sense. Can anyone with more experience with these switches confirm that this will be ok to use, or should I just get a new switch.

Jame

[RJ Guitars]

Hey, just want to have a little confirmation on the impedance switch. For my rocket build, I purchased one of those electroswitches that is seen in Franchesca. Looking back through the posts to get a idea of how it works, I found a topic where Ron explains that these switches have 4 lugs of 3 gangs (for a total of 12 gangs circling the switch). Each of these lugs have an output jumper as well. To wire it, you use the first lug , and correspond the inputs with the directly opposite lug (ex: pin 1 to pin 7, pin 2 to pin 8, etc.). Now, here's the question. It looks like the wrong type of switch was sent because, I have 4 gangs to every output jumper, so I'm assuming this switch has 3 lugs of 4 gangs. Will this make a difference if I wire up only 3 of the gangs in each lug, leaving an open gang from each lug. As well, because there's only 3 lugs of 4 gangs, they won't be completely opposite from each other, will that make a difference.

Ok, was that confusing enough? I hope that makes sense. Can anyone with more experience with these switches confirm that this will be ok to use, or should I just get a new switch.

Jame

Doc sounds like you have the same switch that Ange is using... take a look at his post and see if that clears it up for you...

Let me know otherwise and we can sort it out.

rj

[guitarsnguns04]

If the switch doesnt have a stop pin that could be moved to 3 poles and 4 positions. I would simply put a jumper from my 16 0hm leg to that fourth lug and jumper it to its corresponding lug.That way in the worst scenario it gets turned to position 4 it is still connected at the 16 ohm windings. You selector would be set as follws..4-8-16-16.

[RJ Guitars]

If the switch doesnt have a stop pin that could be moved to 3 poles and 4 positions. I would simply put a jumper from my 16 0hm leg to that fourth lug and jumper it to its corresponding lug.That way in the worst scenario it gets turned to position 4 it is still connected at the 16 ohm windings. You selector would be set as follws..4-8-16-16.

Patrick you are right on the money there.... that's the best way to do it. I think Angelo posted a picture of his if you need a visual.

Speaking of money, using this switch lets you use a commonly available high quality rotary switch that costs $4 rather than one of the expensive $12 OEM impedance switches.

Also, be aware that the wire Heyboer used on these trannies has a tendency for the insulation to soften and melt away from the heat... I'd say it is 80C PVC by the way it acted. I had to really work these things kinda quick and gently to get a good solder and not melt the insulation.

rj

[Structo]

Although probably not correct as far as cloning goes, I like that switch that Hoffman sells.
Very heavy duty and works well.
[img:560:266]http://www.el34world.com/charts/images/ ... agram2.jpg[/img]

[DocJames]

hey GnG04, that's a great idea using the 4th gang as another 16 ohm. I was debating getting a new switch, and I probably will use a different type for my next build. But that will probably do the trick for this build, thanks guys!

James

[RJ Guitars]

Although probably not correct as far as cloning goes, I like that switch that Hoffman sells...

Structo - good looking switch and a nice addition to the "where to find it" notes. thanks! rj

[jaysg]

http://www.mouser.com/Search/ProductDet ... WVKA%3d%3d