How much pressure should I have on the my peizo? I have mounted it under the bridge is a groove cut into the top of the guitar. its about a 1/32 proud of the face, and is compressed that much when the bridge is screwed down directly over it.
The reason I mounted it like this was that I recalled reading that some pressure enhanced how a peizo works. Could be the opposite.
I'm not getting much sound from the peizo, is this normal?
have I broken it?
It will be hard to replace since the box is epoxied shut!!!
I agree. I also have limited experience with piezos.
A rod ? Too much compression can actually pinch and squish the rod resulting in diminished sound or killing it completely , you may be able to "un mash" squashing it the other way . or if it is cut , using a pin or nail to get the outer layer away from the inner contacts. you may also just have gotten a bad rod .
ps .. rods are "better" with a preamp , but not "necessary".
IF you need to get into the box again , you can try heat to unglue it . or cut and access in the back , and make a plate to cover it afterwards.
or ,if you don't wanna do any of that , get a surface mounted piezo , like the "bonehead " . Shane Speal cbgitty sells em .
Hi Ransom, I'll just reinforce and add to these comments, but first a tip.......
When building instruments it's a good idea to make things easily reversible. The use of epoxy glues for assembly is a no no in my workshop. It will come apart but in my experience takes far more heat than other glues.
The best position for a strip or rod piezo is under the bridge saddle, closest to the strings.
The bottom of the slot for the p/up should be perfectly flat
The contact surface on top of the p/up has to be perfectly flat, so as to exert equal pressure on all pezio crystals.
The pickup strip is not normally one long length of pezio crystal but a small " patch" for each string location.
If the string is not in the pezio " window" sound will suffer.
It does not take much to make a strip pezio pickup to fail, or underperform. I think I've worked them all over the years
Even the pinching of the strip in its slot, and the bowing of the top from weather/timber changes.
good luck Taff
Because I dont have a amp, I was testing the guitar with rocksmith on my ps3. I had forgotten that you need to calibrate the game when you change instruments. The result of not calibrating happens to be low volume output. Once I calibrated the game to the guitar everything worked fine.
It's a rod peizo and its mounted directly under the saddles on the bridge right were the adjustment screws for string height contact the bridge.
Thanks for all the replies.
Glad you got it sorted. Now look at all the extra info you have for your next build. ha ha.