I am currently building my 1st CBG and am planning to add a piezo pickup. I have read a bunch about piezos feeding back & what can be done to reduce it.

Would it be feasable to use a small circle of Dynamat rubberized audio sound dampening material attached to the back of the piezo, or covering/doming the back side but not touching it?

Seems like this would prevent sound waves from reaching the back side of the piezo which may help reduce feedback...maybe I'm way off base though. My concern is that it may interfere with the effectiveness of the piezo in some way.  Any thoughts?


Thanks for your help, Joe

Views: 2877

Reply to This

Replies to This Discussion

It is under the lid off to the side of the neck as it goes through the body.


Sorry, I misunderstood you. What did you use to glue it to the lid?

Hot glue or epoxy works the best, in my opinion. You have to make sure whatever holds it to the lid transmits the vibrations to the disc.

Super glue.  Was that a bad idea?

Pop it off and try hot glue or epoxy. I think you will find it will work a whole lot better.

Will do.

Piezos feed back if too close to the  amp speaker - there is an acoustic amp with a built in anti-feedback switch, the Marshall ASD-50D 50 watt combo, but sitting several feet from any ordinary amp and keeping the volume and gain down will cut out the feedback - unless if there when you want it! (-;

This feedback isn't quite like if I plugged my acoustic or an ES330 or a Casino into my AC15C1.  I get what you are saying, and even have it on a 15 ft. line with me facing away from the amp and me between the amp and the guitar.

The key to not getting feedback with a piezo is to use the correct type of piezo. I would recommend the piezo sold by the ebay username of jburdog. Below is the link to where you can get some. I've used the on my cbg's and they work very well. It would be best to hot glue the piezo under the bridge.



I normally embed a 27 mm piezo in my bridge under a brass or black threaded bolt without much feedback issues. My last build I tried another disc in parallel and was getting a lot of feedback with it mounted on the box near the sound hole so I moved it to the neck and eliminated most of it, the thing is experiment with the placement. Just tape it in so that you can move it arround, then when you do find a sweet spot glue or silicone it in place. Also the amp is key as well, I use Billy Gibbons theory on larger amps with the CBG using a piezo.............no treble, full bass. Good luck and have fun jammin.


The Essential Pages

New to Cigar Box Nation?How to Play Cigar Box GuitarsFree Plans & How to Build Cigar Box GuitarsCigar Box Guitar Building BasicsCigar Box Guitar Parts Store

Site Sponsor

Recommended Links & Resources


Diamond Plate for CBG

Started by Daniel Nemiroff in Building Secrets, Tips, Advice, Discussion. Last reply by Titch the Clown 1 hour ago. 5 Replies

Strung her up

Started by Richard Wilkins in Building Secrets, Tips, Advice, Discussion. Last reply by Danny B. 9 hours ago. 35 Replies

VIDEO - 1917 Film, "The Making of a Ukulele"

Started by Shane (www.ShaneSpeal.com) in Feature Articles. Last reply by Dave Perks 18 hours ago. 3 Replies

VIDEO: A Tour of Daniel Hulbert's Ukulele Collection

Started by Shane (www.ShaneSpeal.com) in Feature Articles. Last reply by Daniel Hulbert yesterday. 3 Replies

Your latest Music find.

Started by Cause the Blue rat in Other stuff - off topic, fun stuff, whatever. Last reply by Fomhorach on Saturday. 25 Replies

Piezo Secrets from Cigar Box Nation Members

Started by Shane (www.ShaneSpeal.com) in Feature Articles. Last reply by John Sawyer on Saturday. 5 Replies

Weird singing pole thing

Started by Fomhorach in Other stuff - off topic, fun stuff, whatever. Last reply by Cause the Blue rat on Saturday. 4 Replies

mailing a cbg

Started by Ben houghton in Other stuff - off topic, fun stuff, whatever. Last reply by Ben houghton on Saturday. 5 Replies

Blog Posts

Quick bridges

Posted by Michael Fred Johnson on October 22, 2016 at 8:04am 2 Comments

z Mragowa

Posted by Marek Dłużniewski on October 19, 2016 at 1:33am 2 Comments

Tea Chest Bass

Posted by Hal Robertson on October 16, 2016 at 1:09am 2 Comments


Posted by Monterey on October 15, 2016 at 8:39pm 3 Comments

Latest Activity

Giuseppe Cassa posted a video
4 minutes ago
Danny B. commented on Shane (www.ShaneSpeal.com)'s group Building a Cigar Box Guitar 101
"Well, I adjusted the screws so the bridges were all at midpoint, so they could be adjusted as much…"
7 minutes ago
Dan Reynolds posted a photo


My Cedar Creek Dulcimer build
13 minutes ago
Giuseppe Cassa posted photos
19 minutes ago
J.Rob joined Shane (www.ShaneSpeal.com)'s group

Building a Cigar Box Guitar 101

This group is for discussing the basics of CBG building for newer builders - where to start, what…See More
31 minutes ago
J.Rob replied to Littleshovel's discussion string spacing on nut and bridge blanks in the group Building a Cigar Box Guitar 101
"I saw this years ago i think on the nation so this is not my idea. first mark on the paper two…"
31 minutes ago
Charlie Philp updated their profile
32 minutes ago
Grandpa replied to mugs's discussion size of wire to hook up pots and pups
"Some of us are far enough out to have trouble seeing the box anymore!  8{ ) "
34 minutes ago
Brent Briggs commented on Charlie Philp's photo

'Oliva' - Fretless 3 String CB Guitar, by Charlie 'Silverspoon' Philp

"I like that finish man. Looks awesome. I gotta get a torch now."
34 minutes ago
Brent Briggs liked Charlie Philp's photo
35 minutes ago
Scott Ross commented on Shane (www.ShaneSpeal.com)'s group Building a Cigar Box Guitar 101
"O.K. I give up, thought I could figure it out but I was wrong. So..... QUESTION: What part of a…"
35 minutes ago
Charlie Philp posted photos
38 minutes ago



© 2016   Created by Ben "C. B. Gitty" Baker.   Powered by

Badges  |  Report an Issue  |  Terms of Service