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Old December 6th, 2013, 05:43 PM   #1 (permalink)
Tele-Meister
 
Join Date: Jan 2010
Location: Louisville, KY
Age: 31
Posts: 358
Rangemaster build

First pedal build from scratch. Doing a rangemaster from GGG with an OC44 I bought from small bear to try to get as close to vintage as I could. I'd like to be able to switch the input cap value on the fly. Here's what I have.

http://www.smallbearelec.com/servlet/Detail?no=581

I know schematically how it should work. Can someone help me with the practical installation please? Aside from this switch and some different value caps, what other parts do I need? And how do they go together?

Thanks!

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Old December 6th, 2013, 09:32 PM   #2 (permalink)
Tele-Meister
 
Join Date: Jul 2004
Location: chicago, IL
Posts: 174
I built a rangemaster on vero board using the same transistor from small bear and the switch stuff is really easy. Get a dpdt (it's the kind with 6 lugs) on-on switch, and run the 2 center lugs to the 2 solder pads for the .0047 input cap. Then wire one cap to the outside 2 lugs and your other cap to the other 2 lugs. I would also get some alligator clip leads and play with several different cap values to find what works with your rig. I think I ended up using a .022 and a .01, but I tried a bunch of different caps until I got what I wanted.

This ended up being one of my favorite dirt pedals and I use it all the time.

Check this switch info for some clearer diagrams http://www.beavisaudio.com/techpages/switches/
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Old December 7th, 2013, 10:57 AM   #3 (permalink)
Tele-Afflicted
 
Join Date: Sep 2009
Location: Stockholm,Sweden
Age: 62
Posts: 1,418
I understand if you don´t wan´t to make a PCB for such a simple circuit that can easily be wired on a tagboard or a veroboard.Here are a couple of layouts:
http://tagboardeffects.blogspot.se/2...ngemaster.html
A bigger picture:
http://2.bp.blogspot.com/-5GZ4jthoyJ...th+trimmer.png
A good vero layout with switching:
http://www.google.se/imgres?imgurl=h...ed=0CDUQ9QEwAg
Another vero layout:
http://www.google.se/imgres?imgurl=h...ed=0CDMQ9QEwAQ
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