G'day all,
I received a cheap pre-amp in the mail today, & it came with a rod piezo. My question is, can this be glued to the bottom of the sound board like a disk, or would I be better off making a hardwood bridge & embedding it into that? Or would it not make much difference either way?
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Hi again, this job came in yesterday, a mandolin with a bad sounding pickup system. Customer suggested replacing the pots, but I thought I would check the pickup first........this is what I found.
Now to do the repair.
Wow! I'm guessing the string pressure caused the bridge & pickup piece to bend, all which sort of floats, causing the rod to push out through the bottom?
Hi Mitch, yep you are dead right.
Here are some photos of the repair.....
That's exactly what I did with my ukulele set up, works well!
You can install a rod under the sound board, but like pick says " you need pressure on it". If the your using stick thorough design do this.
You can shim it on the back side if you need, make sure you use a hard wood bridge that isn't to high so the pickup is close to the sting. If the top is 3/16 and a bridge under 1/2 it should work fine. A capacitor on the input will help with feed back. A rod under a saddle in a bridge would be better and in my mind make the best sounding electric acoustic CBG.
Gday, mate, I did make a ukulele a while ago, & I put a rod inside a hollowed out bridge with a saddle & it worked fine. I'm not too fussed about how this one sounds "un-plugged", I've got a few others to muck around with....!
Rods have a tiny fraction of the crystal that disks have, which is why they work better squished between the bridge and the bridge-saddle.
Disks have a LOT more electricity producing crystal, so they work well enough glued to any surface that vibrates.
Gday JL, Thanks for the info mate, that makes sense.
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