It hadn't occurred to me until I came across this site that if you wired two piezos in parallel, say to reduce the impedance, that they would likely be out of phase when place on the instrument. So I set out to build a new pickup with two piezo benders on top of each other. The results unfortunately were mediocre.First, I soldered together two piezo benders in parallel and then stuck them to each other using Elmer's post-it adhesive. I used this material because it is sticky, cheap and I had read that some use it to attach piezo pickups to the surface of instruments, as it supposedly attenuates the signal, thus reducing clipping and noise.
Then I dipped the whole think in Plasti-Dip and added some stylish yellow heat-shrink tubing.
I recorded some very sloppy playing on an Epiphone steel-string guitar using the new pickup, the basswood piezo pickup described in this post and then my Audio Technica Pro 37 microphone.
New Pickup
Basswood Pickup
Pro 37
The basswood pickup, which I thought sounded very good on a nylon string guitar, sounded mid-rangy here. The new pickup sounds better, although muffled and also mid-rangy. There are many variables that could be causing this: the benders themselves, the adhesive, etc. It's beyond me. I've contacted the author of the site that I link to above, but have heard nothing back about his pickup.
