![]() Being powered by a 9v battery, my mind immediately goes to a few purpose-built op-amps sold for cents by Texas Instruments, and the correct network of resistors and capacitors to correctly bias the piezo’s ultra-high impedance. On top of that, there is no voodoo in the circuitry. Musicians deserve to know the truth, and that truth is that piezoelectric pickups that these systems use cost mere cents to manufacture. Take into consideration that most musicians will end up hiring a luthier or guitar tech to install it for them for an additional price, and you can understand why my mind went to reinventing the wheel. This parts list seems a lot more in the neighborhood of $20-50. A patented TRU-MIC, which appears to be a standard piezo disc encased in plastic.įor a whopping $299 USD, that seems like a pretty scant list of ingredients.Some sort of under-saddle piezo wire/rod.Here is what I can tell this system is made up of: It sounds surprisingly good for what it is, but I’m not convinced all that gadgetry is necessary. ![]() My own acoustic guitar has a Martin Thinline undersaddle piezo installed, along with a Skysonics mag/mic combo I bought on AliExpress. Being a lifetime musician, I have used numerous different undersaddle, magnetic pickup, and microphone products similar to this. The LR Baggs Anthem seems to be the most popular retail product in this category. ![]() I am actively documenting this project as it evolves, so let’s start at the beginning. Having a very limited grasp on electrical circuits and the technologies used in these products, I am convinced that they are criminally overpriced, so I decided to experiment. If you’ve ever owned an acoustic guitar that you love, but want to add electronics to it for live performances or recording applications, you will have noticed a booming industry full of rather expensive products. ![]()
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