How did you get your best crunchy overdriven tones out of a cbg with a piezo? I don't generally prefer any more than a natural crunch. Half the time, the amp is plenty, the rest of the time, I use a pedal--I'm partial to Wampler stuff. I pretty much always prefer the sound of a magnetic pickup. Help a brother out and tell me your dirt-y secrets to sweetening up the piezo crunch!
First LOVE Wampler. Natural sounding stuff. I have their 'Tweed 57'. OK, my experience with piezo with any volume + crunch is feedback. Anything above low volume. But there's better than I here. Someone may have a cure for the piezo screech.
I've used piezos on a few builds, but then I switched over to magnetic pickups from the old pickup pile (I build partscasters from budget guitars and the original pickups are pretty much always replaced with something better) and then ended up using budget p90s when the used pickup supply was exhausted. This is an attempt to revisit the piezo pickup and improve on my results.
Insulating the piezo a bit inside the box with foam does help with feedback.
Also, using a pre-amp does let you shape the sound more precisely in order to get the most out of it.
How thick a piece of foam would you suggest?
Piezo's do like to feedback, but trial and error usually finds a solution. I find putting the piezo directly under the bridge saddle helps, or a rod piezo in or under the saddle. Usually I tack the disk down with a drop of wood glue, then cover the disk with hot glue, while it's still tacky I put a square of cardboard on top to make the hot glue layer an even thickness., some wrap their disk in leather before gluing it down.,.,others use the plastic dip they make for tool handles, and sell at the hardware store..,I have also sandwiched my disk between 2 thin layers of wood, using hot glue as the adhesive.,.,I am sure there are other good suggestions on the way.,.,.
The plastic dip method would make for a cool look, although it would just be for me. Sounds like it is going to pretty much involve damping the response from the vibrating top.
Cut a circular impression right below the saddle on the neck just deep enough for the disk,., install upside down in a bed of hot glue,., you can cover or opt not to.,. A good strong signal right from the source helps,.,.. left of the saddle sounds good, but you need dampening to curb feedback
I'll give it a shot. It would be a slicker look than the p90s that I've been using. It's hard to beat that p90 sound, though. . .