Can anyone tell me definitively if the SIZE of the piezo disks used makes a difference? I have read some who say it doesn't matter much, and I accidentally ordered some pretty small disks, so I'm wondering...

Also, can someone tell me how piezo RODS differ from disks?

I'll also comment: I get the best results, where piezo disks are concerned, when I instal two disks together, instead of just one. Anyone else agree?

Views: 669

Replies to This Discussion

I've found no real noticeable difference, even with a small piece cut from a disk.  Read more here. <--- Click that

Yes, 2 piezos (even 2 half ones) wired together IN PARALLEL give a better response

Just curious, why would it make 2 sound better? Would it be like a "stereo" effect? I also have been looking into the piezo rods, some of the better prices on ebay they seem to already have a 1/4" jack on them. So I guess just cut off the jack and wire as normal? How would you know if the wireing is correct to the input jack terminals or does it matter.

Thanks for any response.

RKIII

 

Another vote for 2 in parallel, its the way I wire mine, they just sound better to me than one.

Looking at the technical specs, a piezo is a high impedance component and most amplifiers require lower impedance to reproduce the sound accurately.  By wiring in parallel the impedance is cut in half, and works better with the amp.  If wired in series, the impedance doubles and performance falls.

A disk and a rod piezo are very similar in that they both turn vibration into an electrical signal.  They differ in that a disk can read the vibration by contact, and a rod requires pressure.  For example, a rod will not work if it is merely taped to the box. A rod piezo works best when it is installed in a bridge and in direct contact with the saddle - which is under pressure from the downward force of string tension.

Most rods I've seen have a very small jack plug, not ¼", and are made to be plugged into a preamp. Simply cut and strip the wires and solder to the jack.  There is no true positive and negative orientation.  However, if wiring 2 in parallel, make sure you treat the same wires as pos and neg.

Do you feel the rod piezo sounds better than the disks?  I used disks on my first build, and a rod on second.  They sound about he same to me (could be my being new to playing/building), both good, but not too much difference.  Yet I have read that the rods are better.  I find the disks easier to install, as it was a pain to cut the perfect slot for the rod to rest in...  thoughts?  Also, too keep with the 'bolt' retro feel but get a good flat bridge, I grind down a bolt/screw in half so it sits flat...works on all styles of piezos and I find the wood threads gives some extra room for strings to sit in and not lay across the top of a sharp thread (especially if you angle the bridge, which is the opposite way of the angle of threads on standard threaded screws.)

Attachments:

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 BasicsCigar Box Guitar Parts Store

Site Sponsor

Recommended Links & Resources


Discussion Forum

Piezo location

Started by Jack Noller. Last reply by CJWilky Mar 29, 2016. 9 Replies

Preamp for rod piezo?

Started by Mark Reaney. Last reply by Bruce Trappes Sep 27, 2015. 2 Replies

Tuneable water bottle bongo

Started by C Cook. Last reply by C Cook Jan 18, 2015. 4 Replies

Bass Uke set up?

Started by Tom Lauten. Last reply by Tom Lauten Jan 2, 2015. 2 Replies

Cable Piezo

Started by Seasick Mick Feb 10, 2014. 0 Replies

Piezo rezo

Started by Bert the Welder. Last reply by nailtown slim Dec 16, 2013. 7 Replies

Compressor for piezo

Started by Wade Aug 2, 2013. 0 Replies

Piezo forms and size

Started by Kevin M. Kraft. Last reply by HarleyTodd Jun 27, 2013. 5 Replies

PIEZOs - To Glue, or not to Glue....

Started by Keith Stanford. Last reply by Eric Johnson Mar 19, 2013. 1 Reply

Piezo for a wash tub bass?

Started by Tony. Last reply by Tony Feb 15, 2013. 6 Replies

Multiple Piezo Installation

Started by Redbelly. Last reply by Alan Jan 18, 2013. 9 Replies

Hoboking Standard

Started by Alan Jan 18, 2013. 0 Replies

Rod PiezoInside the Bridge

Started by Redbelly. Last reply by Redbelly Dec 19, 2012. 24 Replies

piezo between box and neck?

Started by matthew. Last reply by Mark Dec 12, 2012. 4 Replies

Piezos...extreme frustration

Started by Tim Fleischer. Last reply by Keith Stanford Dec 5, 2012. 9 Replies

Which kind of piezo to choose?

Started by Alan. Last reply by Alan Nov 6, 2012. 8 Replies

Sources for PVDF sensor cable

Started by Flatfish. Last reply by Randy S. Bretz Oct 6, 2012. 3 Replies

piezo on concrete block guitar

Started by Wade. Last reply by rusty case Oct 5, 2012. 2 Replies

Latest Activity

Doug Thorsvik commented on Doug Thorsvik's photo
Thumbnail

Blue Ribbon CBG

"Thanks Alan! I do lean towards the simple. Playability is my top priority and this one has great…"
6 hours ago
Poorness Studios posted a video

Unboxing a Homemade Kazoo (from one of my subscribers)

Welcome back to Kazoo Fridays! Somebody sent me this homemade kazoo to unbox on my channel. He also sent me a video a fourth graders playing some homemade ka...
7 hours ago
t-belly johnson liked bemuzic's video
9 hours ago
AGP # commented on Doug Thorsvik's photo
Thumbnail

Blue Ribbon CBG

"Nice Looking Clean Uncomplicated Build Doug, Well Done! :-)"
9 hours ago
AGP # liked Doug Thorsvik's photo
10 hours ago
AGP # liked bemuzic's video
10 hours ago
bemuzic commented on bemuzic's video
Thumbnail

Busker Vs sound of Sainsbury’s shopping trollies! Winter Song - with 3 string Cigar Box Guitar

"Thanks John, yes we're having a pretty cold spell atm here. Happy Christmas to you and Linda.…"
10 hours ago
Keith Rearick liked Chuck otto's photo
11 hours ago
Keith Rearick liked Doug Thorsvik's photo
11 hours ago
Keith Rearick liked Doug Thorsvik's photo
11 hours ago
Keith Rearick liked Doug Thorsvik's photo
11 hours ago
BrianQ. liked Doug Thorsvik's photo
12 hours ago

Music

© 2022   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 -->