- Joined Dec 19, 2020
Hi folks! I am a newby around here and I have doubts about a design I am working on. I want to build a solid body lap harp with 20 steel strings and use a magnetic pickup to feed a standard guitar amp. The key is to have a single pickup unit with an impedance of roughly 2K. I could use 3 standard pickups through a simple op amp mixer, but that requires batteries, circuits, and a place to put them. Hand winding a coil on a ten inch bobbin is out of the question. A single loop transformer pickup has proven... Problematic. So now I am thinking about winding 20 small round bobbin coils, one for each string, and connecting them in series. Each coil at roughly 2K. They would all have a mutual magnetic field, and be connected in inductance aiding. Thoughts anyone?