![]() I know most implementations involve mounting under the bridge.but I can't on my guitar.so I want to use the humbucker cavity.but like I say the piezo seems to be the most random thing I've ever dealt with. ![]() So that led me onto trying to establish the theory behind what the goal is.but short of lots & lots of duplication on the net about how the crystals expand & contract when voltage is a applied (or how voltage is output from the sensor when the piezo material picks up vibrations).I'm struggling to work out the best way to get the largest & fullest sound. So I then experimented by randomly applying pressure directly to the piezo sensor with finger/plastic pens etc, whilst resting the sensor on my guitar surface & strumming.every now & then I get a sweet spot of sound (that I seek) when pressure is a applied in a certain way (Note: not a sweet spot of position.ie moving around the guitar body.a sweet s[pot of pressure), so this proves a decent signal can be had.but I'm damned if I can replicate it, with the non finger pressure method! with poor fidelity being the outcome (with No2 being the most pesky - sometimes, if I screw the screw in just a little bit extra ithe piezo wouldn't even give anything out! Attaching the sensor to a bit of fr4 then then screwing the fr4 into the guitar body (so the piezo sensor is wedged in between the fr4 & guitar body).Īll these ways have laughed in my face. drilling a hole in the centre of the piezo an putting a screw through to affix it firmly to the bodyģ. I've used both a charge amp and a basic fet preamp.each one was pretty much the same & revealed that the piezo is stupidly quirky wrt try to get maximum amplitude/fullest sound.Ģ. Ok, so I'm using a 1" (25mm) piezo sensor.I want it to go in my humbucker cavity.to pickup guitar body vibrations.
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