The Lexicon MPX 1 is a professional digital effects processor designed for advanced audio signal processing and effects generation. Engineered with a dual 24-bit DSP architecture and a 44.1 kHz sampling rate, it delivers high-quality sonic manipulation with over 50 effect types, including reverb, delay, modulation, and dynamic processing. Its robust design and comprehensive connectivity options, featuring balanced XLR and unbalanced 1/4" audio I/O, along with MIDI In/Out, make it a versatile tool for studio and live sound applications. The intuitive front panel interface, complete with knobs, buttons, an LCD display, and footswitch support, ensures efficient operation and control.

This service repair manual provides comprehensive guidance for the maintenance and repair of the Lexicon MPX 1. It covers essential procedures such as troubleshooting common issues like power supply faults and signal problems, detailed component replacement instructions for key parts, and information on performing factory resets and diagnostic tests. The manual is intended for owners, technicians, and service professionals, offering the necessary technical specifications and step-by-step instructions to ensure the optimal performance and longevity of the device. This English language document serves as a vital resource for maintaining the integrity of the audio effects processor.