#1 resource for Cigar Box Guitars, Free Plans, How-To, Parts & More!
Cigar Box Nation is sponsored by C. B. Gitty Crafter Supply, your one-stop-shop for Cigar Box Guitar parts and accessories!
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
Jay at tiny guitars makes his own bridge pickup with 2 20 mm piezo dishs on the bottom of the bridge held buy hot glue. I have owned a few of his builds that have that type of bridge pickup combo, never any feed back nomatter what amp I use.
I would go with two piezos wired in parallel this helps with the impedance matching to your amp.
I also glue the disks copper side down to the neck rather than the body and I also then glue a thin bit of wood over them covering the white crystal as best I can
All this seams to help a lot with feedback and makes the guitar viable for use on stage with a big PA
It depends what your using the guitar for really if you just noodling at home on a 5 watt amp you might not need to worry as much as if say you were using a marshal head double stacked on a 10 k rig every night on stage
check my blog out http://darrenscigarboxguitars.blogspot.co.uk/
Thanks for all the replys. I'm just fooling around at home & plan to build a 5-7 watt amp at some point...doubt I'd ever use anything larger. I'll probably be ordering a CB Gitty dual piezo setup w/passive vol pot...or something similarly simply to begin with.
Great thread, I just finished my second build and went with a single piezo disc (first build has a coil) and I do get humming when hooked into my big Fender amp. Plugged it into my little cigar box amp and the humming goes away so when I read what Dave said about big amps it all made sense, I started the 3rd, 4th, 5th and 6th builds (this is addictive) and I am going with parallel dual piezos, one with a coil and one with a rod piezo and see what goes. I'll let ya know. Thanks!
Funny enough I just bought a fender type switch and volume and tone plate going to maybe try some switch shinangins ,
maybe some thing a bit off the wall
one pick uo on a primative resonator and may be a parallel pair in the neck
as I have been making guitars like this already
hopfully I will post it I eventually get round to it
In the mean time I have some new designs to be making
My best ran 2 piezo in parrallel ,, embed em heavy in silicone or hot glue ,, metal side toward bridge ,,, that has cured all the ffedbacks i had ,, I use a Micro cube and a peavy rave 150