In a Dulcimer build I put a piezo disk in the neck under the fret board embedded in hotmelt glue above and below, but when playing its harsh through the amp. I was told that it may work better with an acoustic amp but I dont have one and really dont want to buy one as I have several regular amps. Any suggestion how to calm a disk for my next Dulcimer, maybe silicone instead of hot glue or moving the piezo away from the bridge. I guess maybe a pre-amp would help ? not sure.
Thanks
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I use a Baggs pre-amp for my mountain dulci
2 piezos wired in parallel?
Craig
Thanks for the response, do the piezo's have to be close to each other or does it matter
Haven't done a dulcimer, (yet), but I have run a pair of Piezos in parallel mounted side by side in the oak bridge block on my CBGs with good results. I glue them in the block with silicone and cover them with silicone filling the recess. I have been using 1/4" oak for the blocks and make the recess for the piezos with a forstner bit.
What I'm reading says it doesn't matter or it does matter lol. I think you can get away with one in the neck and one under the bridge if you don't want to put them both in the bridge, but that works too.
It either does or doesn't depending on the phase of the moon, the alignment of the stars, or some other astrological phenomenon. Remember rule #1..."There are no rules!"
I use a K&K Twin spot internal pick-up in dulcimers they work great. You place a disc on either side of the bridge not directly under. They are a little expensive at about 65.00, but you get what you pay for.
I went and took a look at the K&K Twin. It is two disc piezos in parallel.
It is a really nice looking package, but if you get busy with some shielded cable, shrink wrap and a soldering iron, you can probably save yourself about $50.00 of those $65.00.
If you want to improve on it (a) wiring them in parallel should decrease the impedance (which is what they are doing). So if you use three discs it would be better than two. (b) Use different sized discs to even out the resonance frequencies of the discs, extending the highs and the lows. I set up one of my guitars with a 3 different sized piezos in a piezo array, parallel linkage using conductive copper tape. It does make a difference. I also have a single piezo bridge pickup on that one. When all four ar working, it makes a further difference. (c) Again, put it through a preamp to lower the impedance even more. I am still working to get apreamp I like ie: one that I cannot blow out. I am going for Zener diodes on the next one for protection.
David
Thanks for the suggestions I have ordered a preamp from Ben to try
I haven't tried them, but they look like a pretty standard rig. I have some friends with standard acoustics and preamps and they are just brilliant through an amp. Let us know how it works.
I see lots of comments on disc piezos as being inferior. But when I look outside the CBG community, if you are into stand up bass or fiddle, rod piezos are generally a no go and people are getting good results with discs. The other thing about piezos as opposed to standard magnetic pickups is they are silent. Every piezo pickup is a humbucker in the original sense of the term.
Good luck.
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