/bi_phase_semi_clone

mostly-clone of mu-tron bi-phase

Pretty close to a clone of the Mu-Tron Bi-Phase stereo phase shifter

SCHEMATIC

Features:

  • it's like a Bi-Phase, yay!
  • the audio path is very faithful
  • the sweep generators are a lil' different, but behave like the original

Notes:

  • this is an old project that I built on pad-per-hole prototyping board. There is no PCB layout.
  • it's made with VTLxxx style vactrols, different vactrol setups are possible, they all can be made to sound good.
  • I would probably do a few things differently today, but it does work well and sounds good.
  • there are a few missing values, and some that I had to guess about, it's probably pretty close to right, but there might be some errors.
  • the part numbers don't necessarily match anything, for example the opamp packages may not be paired up as shown in the schematic, I would need to get my hands back on the device to check this.