Replies to This Discussion

Permalink Reply by Jon Leslie/Runaway Veal Music on March 22, 2013 at 5:08pm

Should I use jacks with 2 contact points only? Really baffled

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 22, 2013 at 5:17pm

To sum up my post... mono jack or stereo jack? It's hard to tell if that's the problem with the piezos...especially since I encased the piezo in glue...

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 22, 2013 at 6:11pm

It's some kind of grounding issue..touch guitar cable and its fine. In other cbg identical no prob. Plug that good pick up in to same cbg with problem hiss its bad. So it ain't the piezo. One is tin one is wood. Tin works great both pickups...anybody know how to fix this issue? Is there a way to ground the jack? It's for sure the wood /cigarbox creating the issue cause the piezo works fine on the tin cbg...very frustrating.

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 22, 2013 at 7:11pm

Ok 100% verification the 2 different pickups work on the tin cbg no prob. There's an issue with the wood or something I can't figure out. All I do know is that the cbg that is tin is somehow keeping the hum away..maybe through body contact. Can someone please tell me how to fix the issue with cigarbox guitars? Thank you

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Permalink Reply by The Phrygian Kid on March 22, 2013 at 7:43pm

Tins are fully shielded with no effort at all, because you drill a jack output into it and the jacks chassis touches the tin, the whole thing is grounded, ie one big faraday cage. Gotta love tin guitars!

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 22, 2013 at 7:54pm

How do I shield a wood cigar box ? Never thought it would be an issue ...adding metal around the jack or something ?

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Permalink Reply by darryl kernaghan on March 22, 2013 at 7:14pm

firstly 3 point jacks ARE stereo jacks,you need to connect red wire to terminal that goes to the tip,black wire to the terminal that goes to the main shaft of pin when inserted inti jack. terminal that goes to small segment of pin behind tip is not required for mono,re the glue problem,if neccessary,gently heat glue till it softens and you should be able to seperate,b4 you do this tho,try loading the dic with a bit of compression and see if that reduces rattle,as a rule i dont glue dics,i try to make them accessablee and adjustable with foam and tension etc,but the couple i have glued have turned out o.k.

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 22, 2013 at 7:49pm

The soldering of the points are good. I tested each piezo on the tin cbg.I won't glue a piezo again. All are glued at this time...There's something that's got to be simple here to fix. I tried all my piezos in the tin cbg. No hum. All I can think is the add tin around the jack???i have no plate on the jack ..just jack in the cigar box wood itself.This is really odd.

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 22, 2013 at 8:17pm

Anyone have a cigarbox guitar (wood) with a jack but no jack plate? If so hum or not? This issue would seem to have been covered many times for those with wooden boxes , a jack (no plate)...just screwed in a hole and experiencing a hum...I can't be the only one...but being that we know all my piezos work just fine in the cbg its gonna be all acoustic models by default soon....hey thanks for listening to my rant but if anyone comes up with a solution please get back to me soon.thanks

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Permalink Reply by Michael Fred Johnson on March 23, 2013 at 3:49am

Have you grounded the strings on the wooden box? This one has an earth strip on the underside of the bridge to contact the string ends

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 23, 2013 at 4:56am

Hard for me to understand from this photo. Can you explain a bit more about an earth strip grounding and how to do it? Is there an easy way to ground and get rid of the hum ? I don't wanna electrocute myself but is it possible to use the unused solder terminal on the 1/4 stereo jack I've been using and connect a wire to something? Or is that asking for trouble?

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Permalink Reply by Michael Fred Johnson on March 23, 2013 at 3:56am

This one has a piezo encased in glue and the strings are earthed via.the stripped end of a wire wrapped around one of the tailpiece mounting screws through a hole in the end of the box with the other end soldered to the jack socket terminal

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