Peavey Max 115 Schematic Exclusive

Peavey Max 115 — Schematic & Exclusive Write-up

Overview

The Peavey Max 115 is a lightweight, powered PA/monitor speaker (115 watts RMS) designed for small live gigs and practice. Its compact design and built-in power amp make it popular with solo performers and small venues. This write-up focuses on the internal schematic-level design, signal flow, and practical notes for repair/modification. (Note: this is a general technical overview — for the exact factory schematic, consult official Peavey service docs or authorized repair sources.)

Power amplifier

5. Power Supply & Limiter

• Transformer: T1 (Custom Peavey #71190634) – Center-tapped with a unique 34V-0-34V secondary.
• Soft Start: Exclusive to the 115 is a PTC thermistor (RT1: 10Ω cold) that shunts via relay after 2.5 seconds.
• DDT Compression: The schematic shows an optocoupler (VTL5C4) bridging the preamp and power amp. Unlike standard limiters, the MAX 115 clamps the bias voltage rather than the input signal, preventing "farting out" on low B-strings (30Hz).

3. Preamp Section Analysis (The "Exclusive" Topology)

The schematic reveals a hybrid topology that is unique to the MAX 115 (not shared with the MAX 110 or 112): peavey max 115 schematic exclusive

An exclusive schematic isn’t just about rarity—it’s about accuracy. The correct schematic for your specific revision contains: Peavey Max 115 — Schematic & Exclusive Write-up

• Rear panel sticker – Says “MAX 115” alone? Probably original. “MAX 115 II” or “MAX 115 150W”? Different schematic.
• Input jacks – Original has two plain ¼” inputs. II version adds an effects send/return.
• Fan or no fan – Original has a small internal fan; later Class-D versions are fanless.