You can carefully trim away the excess brass plate to fit in tight spots. As little as a buck each.īutton-type piezos, available in many sizes. In my experience, all piezos have basically the same frequency response, although they can vary in output level. Larger versions are available for bass, but these work fine as long as they cover the whole string spread. The plug is 2.5mm I usually just cut it off. Under-saddle rod piezos for acoustic guitar. For good response on a bass, you must have solid coupling with the strings, and an impedance buffer. On a guitar that doesn’t matter much, but on a bass it is paramount. Without a high-impedance buffer, you will get no bass. You can stick a piezo almost anywhere on a guitar and it will pick up something. You will break a few before you are done. If you want to fool with piezos, especially button-type, get extras. Piezo materials are very brittle and easy to break. Therefore multiple piezos should always be wired together in parallel. It doesn’t take much.įor wiring purposes, treat piezos like capacitors – they sum in parallel, subtract in series. Take note of the break-over angles on the saddles above. Even then, it is tricky, you must get the force on the piezo element right, too much or too little and you get poor response. No body mounting I ever tried was successful, you need tight coupling with the strings, which means a bridge mounting. Simply shaking them does little or nothing, especially at the low frequencies. Piezos generate electricity when they are deformed – bent or compressed.
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