Check the input pin of the first op-amp, follow it past the volume pot, through the EQ network, out of the preamp section, and into the power amp driver stage.
The power section is built for heavy-duty output, rated at .
Low-noise operational amplifiers (often NJM4558 or TL072) handle initial voltage amplification. Peavey’s proprietary TransTube® emulation circuitry is embedded here, utilizing specific diode-clipping networks to mimic the warm, soft-clipping characteristics of vacuum tubes. 3. Tone-Shaping and EQ Section
. This exclusive design emulates the warm, organic saturation of vacuum tubes using purely solid-state components, providing a "Vintage" voice that is both reliable and lightweight. DDT™ Speaker Protection : The circuit includes a proprietary Distortion Detection Technique (DDT) peavey max 115 schematic exclusive
Full schematics and bills of materials (BOMs) for the MAX 115 (such as assembly 99060580) list over 150 components, including specific op-amps, transistors, and diodes used in the preamp and power stages, making them a standard reference for electronics repair. Equipboard for a repair or see how this design compares to other Peavey MAX models? Peavey Max 115 Bill of Materials | PDF - Scribd
If the DDT LED is lit constantly, the circuit is over-limiting. This could indicate a failure in the DDT sensor transistors.
The Peavey Max 115 schematic is considered exclusive because it's not readily available to the general public. Peavey, like many manufacturers, guards its intellectual property, including schematic diagrams, to protect its designs and prevent unauthorized reproduction or modification. Check the input pin of the first op-amp,
The MAX 115 utilizes a topology (IC U5: IRS2092S driver):
When reviewing the schematic, pay close attention to these Peavey-exclusive technologies:
This is the critical section for technicians. The schematic depicts a Class AB push-pull design. This exclusive design emulates the warm, organic saturation
Peavey is uniquely generous among amp manufacturers: they will email you the schematic for free if you ask directly.
Following the initial gain stage, the signal enters a highly flexible tone-shaping matrix.