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Well...today I think I might have some time to work on my philly box. I am going to take out the peizo set up I have in it now and just hot glue a peizo on the back of the box for a trial run....I am sure it will sound great....I just was trying something different and needless to say it did not work out.....sad part is...there is a spot I could have put it in right under the bridge where the neck joins to the box right...I guess I could try to hot glue it there and tuck it in there as far as I could get it....we shall see.
Hi Jerry, I'm afraid the poster above is misinformed about using multiple peizo's. I understand that most of us want to use the most inexpensive materials we can get. I got some Piezo's from JJB Electronics, I did this on a recomendation from Jay at Tiny Guitars a member here and really great guy. These Piezo's cost a bit, but they are great. Here's is what is on their website:
This system utilizes a dual piezo configuration for a crisp sound. The dual piezo
configuration offers a few advantages over single piezo systems. Having two
piezo’s affords you the opportunity to place them at two different points on the
soundboard thus resulting in an improved dynamic range due to the fact that they
transmit the resonation found at more than one point. These special surface
transducers are under less pressure than under saddle pickups thus decreasing
the likelihood of them transmitting a percussive or harsh sound. Each piezo is
designed to pick up the resonation found in a significant amount of the
soundboard. These do not "fade" or distort at high volume or with high-power
systems. The highs are crystal clear while the lows are, what they should be, low!
They are very responsive. This pickup configuration is offered in several high end
guitars. All of our products feature quality components and construction. These
utilize a ¼ mono jack that is of equal quality to those manufactured by
Switchcraft. These will work great in a variety of instruments. Mandolins, ukulele’
s, bass guitars, banjo’s, violins, dobro’s, dulcimers, stomp boxes, etc. The
possibilities are endless! These, like all of our systems, can be installed in about
15 minutes! They are a very simple and inexpensive means of turning your
acoustic instruments in to acoustic electric. Please don’t let the price fool you!
Oh yes, they have many sound samples on their site. It's always a good thing when you can hear sound samples.
As others have said your main challenge is probably the plastic housing on your Piezo's.
Best of luck. Oh yes, the people at JJB are wonderful to deal with, really great folks.
http://www.jjb-electronics.com/ check out this company`s piezo set ups, worth a look!!!!!
I'd third & fourth what folks are saying about taking the piezos out of the case. I recently conducted an experiment with a rebuild--I installed two piezos, but then wired a switch between them so that I can cut one out of the circuit. A single piezo produces a slightly louder, "dirtier" sound, which might be good, depending on your tastes. Two piezos together is a *little* quieter, but much cleaner and *much* less feedback-prone. It gives me the best of both worlds.
I wonder what they do to them to make them black? I wonder if they dip them in a plastic dip or something. Here is a quistion....is there anything that can be added to a pezio to make it sound better? Some builders out there say they have "special componets" with their peizo's to make them sound better.....I tend to wonder if that is just not a gimick. My peizo sounds find....
Randy S. Bretz said:http://www.jjb-electronics.com/ check out this company`s piezo set ups, worth a look!!!!!
I just read on Google Books (Getting a Bigger Sound: Pickups and Microphones for Your Musical Instrument By Bart Hopkin pp55) that wiring piezos in serial (+ ---(+/-)--(+/-)--- -) will weaken the signal as the high impedence is additive. Wiring them in parallel will divide the impedence. Having a large impedence will produce a lower signal and you will have to add in a pre amp.
Thats what I've been trying to say, just not so well. But it seems that 2 is negligable and the benefit of picking up vibrations in 2 spots is worth the minor loss. Plus is seems, from what I have read here and other places, the loss may cut out some of the extra noises we don't want. Another but, one piezo fitted between the bridge and lid (outside the box) also picks up the best string sound, and less box noise, it has been said as the best sound is up to you the player.
Wes Yates said:I just read on Google Books (Getting a Bigger Sound: Pickups and Microphones for Your Musical Instrument By Bart Hopkin pp55) that wiring piezos in serial (+ ---(+/-)--(+/-)--- -) will weaken the signal as the high impedence is additive. Wiring them in parallel will divide the impedence. Having a large impedence will produce a lower signal and you will have to add in a pre amp.
Getting the piezo out of the case will make it much louder. Mounting it underneath the bridge (outside the box) will make it even louder. I mount mine on a piece of cork to dampen extraneous noises from handling the box.
I did a double piezo wired in parallel for a bass project. It sounded just as loud as a single piezo, but it calmed down the harsh sounding highs.