2 layers147 × 99 mm

Monitor boost
MadsRudolph/personal-projects
One passive crossover board per speaker, so build two. Single-sided, through-hole only, CNC isolation-milled with an 0.8 mm end mill (the DTU 62768 process).
47 parts
Boards in 1 GitHub repository, designed in KiCad, that use the BZX79C22 by onsemi (-65℃~+200℃ 1 Independent 20.8V~23.3V 22V 500mW 50nA@15.4V ±5% DO-35 Zener Diodes ROHS). See how each wires it, with its parts, size, README and files; the BZX79C22’s symbol, footprint and pinout are on its own page.

MadsRudolph/personal-projects
One passive crossover board per speaker, so build two. Single-sided, through-hole only, CNC isolation-milled with an 0.8 mm end mill (the DTU 62768 process).