Because the AC4TV is a simple PCB-based amp, it is a fantastic platform for mods. Here are three classic mods derived from the .
Warning: Avoid sites that ask for credit card information for a "schematic bundle." The AC4TV schematic is a piece of technical documentation, not proprietary software. It should be free or nominal cost. vox ac4tv schematic
Once you have obtained a reliable schematic, you can begin to work on your AC4TV project. Here are a few tips to keep in mind: Because the AC4TV is a simple PCB-based amp,
A low-frequency "put-put-put" or oscillation. Diagnosis via Schematic: Look at C14, C15, and C17 (the electrolytic filter caps). These often dry out after 10-15 years. The schematic shows their exact values (typically 22uF or 47uF at 450V). Fix: Replace all filter caps. The schematic ensures you buy the correct voltage ratings. It should be free or nominal cost