Peavey Max 115 Schematic Exclusive May 2026

The original Max 115 has a natural roll-off below 60Hz to protect the speaker. By tracing the preamp’s coupling capacitors on the schematic, you can increase the value of C5 (usually 100nF) to 470nF or 1µF. This extends the low-end response at the risk of exceeding speaker excursion—use with caution. Conclusion: Why the Peavey Max 115 is Worth the Effort In an era of lightweight Class D amplifiers and DSP modeling, the Peavey Max 115 remains a relevant, repairable tool. It has a soulful, thick bass response that many modern amps lack. Better yet, it was built before the era of surface-mount components and proprietary ICs; almost every part is a standard, off-the-shelf item.

The Max 115 has an effects loop or preamp out/power amp in jacks. The schematic shows the switching jacks. Use an external preamp to feed a clean signal into the power amp input. If it works, the problem is in the preamp. The schematic then guides you through op-amp supply voltages (pins 4 and 8 of TL072s, for example). peavey max 115 schematic exclusive

But to keep it singing for another 20 years, you need more than a multimeter and a soldering iron—you need the . This document is your key to understanding the voltage relationships, signal flow, and safety thresholds of a classic bass combo. The original Max 115 has a natural roll-off