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Lexicon PCM-41 User Manual

Lexicon PCM-41
20 pages
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Lexicon PCM-41 Specifications

General IconGeneral
TypeDigital Delay
Dynamic Range90 dB
Output Impedance600 Ω
Bandwidth20 Hz to 20 kHz
Input Impedance10 kΩ
Inputs1 x 1/4"
Outputs2 x 1/4"
Power Supply120 VAC, 60 Hz
Dimensions19 x x 13.5 inches

Summary

Section One - Introduction

1.0 Product Description

General overview of the PCM 41's capabilities, features, and sonic quality.

1.1 Important Precautions

Essential safety warnings and operational guidelines before initial use.

Section Two - Controls and Indicators

2.1 Front Panel Controls

Details the knobs, buttons, and LED indicators on the front panel.

2.2 Rear Panel Connections

Describes the rear panel connectors, switches, and input/output jacks.

Section Three - Installation and Setup

3.0 Mounting and Power Requirements

Covers physical installation, rack mounting, ventilation, and electrical power needs.

3.1 Audio Signal Connections

Explains how to connect audio sources and outputs using various jacks.

3.2 Operating Levels

Guides on setting input and output signal levels for optimal performance.

3.3 Remote Control Functions

Details external control options for bypass, repeat, and VCO functions.

3.4 Voltage Change Over

Instructions for safely changing the unit's AC mains voltage setting.

Section Four - Applications and Effects

4.0 Where to Use the PCM 41

Illustrates typical setup locations and configurations for the unit.

4.1 General Delay Line Applications

Explains various delay effects like doubling, echo, and ambience.

4.2 Basic Delay Effect Settings

Provides specific front panel control settings for common delay effects.

4.3 Using Two PCM 41s for Complex Effects

Describes advanced setups using multiple units for enhanced sound manipulation.

4.4 Tape Phasing Effects

Details a specific flanging effect using two PCM 41 units.

4.5 Integration with Lexicon Model 93

Explains how to connect and use the PCM 41 with the Model 93 processor.

4.6 Localization and Image Placement

Discusses using delay for precise stereo imaging and panning.

4.7 Avoiding Echoes in Sound Reinforcement

Explains using delay to prevent unwanted echoes in distributed audio systems.

Section Five - Block Diagram

Internal System Block Diagram

Provides a technical overview of the unit's internal signal flow and components.

Section Six - Specifications

6.1 General Performance Specifications

Lists key performance metrics like distortion, noise, and frequency response.

6.2 Interface Information

Details input/output types, impedance, signal levels, and remote jack functions.

6.3 Controls and Indicators Summary

Summarizes the function of front panel controls and indicators.

6.4 Power and Dimensions

Lists electrical power requirements and physical dimensions of the unit.

Section Seven - Troubleshooting and Support

7.1 General Troubleshooting Advice

General guidance and warnings before troubleshooting.

7.2 Unit Will Not Power Up

Troubleshooting steps for power-related issues.

7.3 Unit Powers Up, No Audio

Troubleshooting steps for audio signal problems.

7.4 Returning Units for Repair

Procedures for sending the unit for service and warranty claims.

7.5 Replacement Parts Information

Details on ordering spare parts for the PCM 41.

7.6 Limited Warranty Terms

Outlines the product's warranty coverage and limitations.

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