I have wired a disc piezo and a rod piezo in parallel through a simple active (9V) endpin Jack preamp. I tested it before installing, by tapping them on the table. The disc piezo cane through strong. The rod piezo was faint. I plugged a different rod piezo (by itself) into the preamp, and its signal was strong (as loud as the disc had been).

I thought maybe I had messed the first rod up when wiring it and the disc together. So I took the second rod piezo (the one that tested strong by itself) and soldered it and the disc in parallel, then plugged them into the preamp. This time I took extra care in wiring and soldering them. I am absolutely certain I have wired them correctly, in terms of negative and positive, with no shorts. Same result. The disc signal is loud, but the rod signal is faint.

Is there something about the different signal strengths of discs and rods that makes a rod come through quieter than a disc when wired in parallel through the same preamp?

I don’t know if these details make any difference to the question, but the disc is somewhat oversized (2 inches metal diameter), and the disc is wired with slightly thicker gauge wire than the rod (which is wired via the standard shielded wire with the woven outer shield/ground).

Any ideas?

Views: 365

Reply to This

Replies to This Discussion

That’s a great idea. I will attach the disc piezo all the way up at the neck and body junction.

Also, I didn’t really factor in the fact that rod piezos are made to function under compression, not merely vibration. When I tested them, I simply tapped the disc and rod on the table or flicked them. Perhaps that isn’t really a proper test of what signal the rod will produced when compressed under the saddle.

In any event, it sounds like a rod simply generates less signal than a disc. Next time, maybe I’ll install a blend pot between them to see how that works.

A blend pot would be an excellent idea.

Thanks for everyone’s helpful feedback.

RSS

The Essential Pages

New to Cigar Box Nation? How to Play Cigar Box GuitarsFree Plans & How to Build Cigar Box GuitarsCigar Box Guitar Building Basics

Site Sponsor

Recommended Links & Resources


Forum

crossover guitar.

Started by Timothy Hunter in Other stuff - off topic, fun stuff, whatever. Last reply by Timothy Hunter Mar 21. 11 Replies

Tune up songs

Started by Ghostbuttons in Building Secrets, Tips, Advice, Discussion. Last reply by Timothy Hunter Mar 9. 5 Replies

Duel output jacks

Started by Justin Stanchfield in Building Secrets, Tips, Advice, Discussion. Last reply by Taffy Evans Mar 8. 6 Replies

How to Get Your Own Music on Spotify

Started by Cigar Box Nation in Feature Articles. Last reply by Southern Ray Feb 21. 2 Replies

CB Bass Guitar

Started by Mi Rankin in Building Secrets, Tips, Advice, Discussion. Last reply by Justin Stanchfield Jan 27. 5 Replies

Latest Activity

A.D.EKER commented on Dar Stellabotta's video
Thumbnail

A Cigar Box Guitar Six Stringer Built by Louie Lamanna

"i See Your ready to Blow away the GRAND STADIUM ! tree strings more of DAR DELIGHT !! Shine Girl !…"
4 hours ago
A.D.EKER commented on A.D.EKER's video
Thumbnail

Im Troubled (Tribute) Mc K Morganfield by BCB - A.D .Eker 2024.

"Thank you for the kind comments Doug! Glad you liked the Picture !"
4 hours ago
BrianQ. commented on Dar Stellabotta's video
8 hours ago
BrianQ. liked Dar Stellabotta's video
8 hours ago
Southern Ray commented on Southern Ray's photo
Thumbnail

Project Punch!

" Thank ya again Keith!"
10 hours ago
Southern Ray commented on Southern Ray's photo
Thumbnail

Punch Project!

" Thank Ya Keith!"
10 hours ago
Doug Thorsvik commented on AGP #'s photo
Thumbnail

AGP #527 - ''Led-Zep 2''

"This build really strung you along Alan! Reminded me of all my fishing line experiments; a lot of…"
12 hours ago
Doug Thorsvik commented on A.D.EKER's video
Thumbnail

Im Troubled (Tribute) Mc K Morganfield by BCB - A.D .Eker 2024.

"Diggin’ the slow blues. I like that last pic Andries! Look at all those cool guitars. Yeah!!!"
12 hours ago
Dar Stellabotta posted a video

A Cigar Box Guitar Six Stringer Built by Louie Lamanna

This video is the unboxing and the demonstration of a beautiful, six stringer built by Louie Lamanna. Join Louie and I June 15 at the second annual Pittsburg...
13 hours ago
Doug Thorsvik commented on Doug Thorsvik's video
Thumbnail

Hail the Resurrection Day: 2-String Violin Chugger Cigar Box Guitar

"Happy Easter to you too Andries! The passion is definitely in full swing. Turns out I’m…"
14 hours ago
A.D.EKER commented on Doug Thorsvik's video
Thumbnail

Hail the Resurrection Day: 2-String Violin Chugger Cigar Box Guitar

"Happy Easter Doug ! the Passion is in full swing !"
15 hours ago
A.D.EKER commented on Ricky D's photo
15 hours ago

Events

Music

© 2024   Created by Ben "C. B. Gitty" Baker.   Powered by

Badges  |  Report an Issue  |  Terms of Service

\uastyle>\ud/** Scrollup **/\ud.scrollup {\ud background: url("https://storage.ning.com/topology/rest/1.0/file/get/963882636?profile=original") no-repeat scroll 0 0 transparent;\ud bottom: 25px;\ud display: inline !important;\ud height: 40px;\ud opacity: 0.3 !important;\ud position: fixed;\ud right: 30px;\ud text-indent: -9999px;\ud width: 40px;\ud z-index: 999;\ud}\ud.scrollup:hover {\ud opacity:0.99!important;\ud}\ud \uascript type="text/javascript">\ud x$(document).ready(function(){\ud x$(window).scroll(function(){\ud if (x$(this).scrollTop() > 100) {\ud x$('.scrollup').fadeIn();\ud } else {\ud x$('.scrollup').fadeOut();\ud }\ud });\ud x$('.scrollup').click(function(){\ud x$("html, body").animate({ scrollTop: 0 }, 600);\ud return false;\ud });\ud });\ud \ua!-- End Scroll Up -->