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QSC PLX 1104 User Manual

QSC PLX 1104
16 pages
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PLX Series Professional Audio Amplifiers
User Manual
4-ohm minimum impedance models with Speakon
®
output terminals:
PLX 1104
PLX 1804
2-ohm minimum impedance models with Speakon and binding post terminals:
PLX 1802
PLX 2502
PLX 3102
PLX 3602
*TD-000214-00*
TD-000214-00 Rev.B
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QSC PLX 1104 Specifications

General IconGeneral
Channels2
Frequency Response20Hz - 20kHz (+0/-0.5dB)
Signal-to-Noise Ratio> 100 dB
Weight15.9 lbs (7.2 kg)
8 Ohm Bridged700 W
Signal to Noise Ratio> 100 dB
Voltage Gain32 dB
CoolingFan cooled
Dimensions3.5 x 19 x 12.5 in
Input Sensitivity1.4 V
Damping Factor>200
Total Harmonic Distortion (THD)<0.05%
THD<0.05%
Input Impedance10k Ohms unbalanced, 20k Ohms balanced
ConnectorsXLR, 1/4 in TRS
Total Harmonic Distortion<0.05%

Summary

Important Safety Precautions

General Safety Precautions

Lists essential safety instructions for operating and maintaining the amplifier.

Explanation of Symbols

Explains the meaning of warning symbols used in the manual.

CAUTION and WARNING Statements

Highlights critical safety cautions and warnings regarding electric shock.

FCC Interference Statement

Details FCC compliance for Class B digital devices and interference mitigation.

Introduction to PLX Amplifiers

PLX 1104 and PLX 1804 Model Features

Highlights key features of the PLX 1104 and PLX 1804 amplifier models.

PLX 1802-3602 Model Features

Details additional features found in PLX 1802, 2502, 3102, and 3602 models.

Unpacking Your Amplifier

Lists the items included in the amplifier's factory-packed carton.

Front Panel Overview

Front Panel Controls and Indicators

Identifies and describes the front panel controls and LED indicators.

Rear Panel and Mounting

Rear Panel Connectors and Features

Details the various connectors and features on the amplifier's rear panel.

Rack Mounting Guidelines

Provides instructions and recommendations for mounting the amplifier in a rack.

Cooling and Power Connection

Cooling System Operation

Explains the amplifier's cooling system and airflow direction.

AC Mains Connection Procedure

Outlines the correct procedure for connecting the amplifier to AC power.

AC Mains Current Draw Data

Presents typical current draw for each model under various load conditions.

Input Configuration and Filtering

Input Configuration Switch Operation

Details how to use the input configuration switch for different operating modes.

Clip Limiter Functionality

Explains the purpose and operation of the clip limiter feature.

Low Frequency Filter Settings

Describes the low frequency filter options and their selection for different speaker types.

Input Connections

Balanced and Unbalanced Input Pinouts

Details the balanced XLR and TRS input connectors and their pinouts.

Parallel Input Signal for PLX 1104/1804

Explains how to parallel input signals to both channels on specific models.

Output Connections and Modes

Speakon Output Connectors

Details Speakon connector wiring and usage for Stereo, Parallel, and Bridge modes.

Binding Post Output Connectors

Describes binding post connector usage for Stereo, Parallel, and Bridge modes.

Output Impedance Limits and Safety

Specifies minimum impedance limits and provides output terminal safety warnings.

LED Indicators

Power, Clip, and Signal LEDs

Explains the function and indications of the Power, Clip, Signal, and -10 LEDs.

Bridge and Parallel Mode LEDs

Details the Amber LEDs for Bridge (BR M) and Parallel (PAR) modes on relevant models.

Controls and Operation

Gain Controls Explained

Describes the function, adjustment range, and markings of the gain controls.

Power Switch Operation

Details the operation of the power switch and initial LED behavior.

Protection Systems

PLX 1802/2502/3102/3602 Protection

Details the protection systems for PLX 1802, 2502, 3102, and 3602 models.

PLX 1104/1804 Protection

Details the protection systems for PLX 1104 and PLX 1804 models.

Specifications: PLX 1104 and PLX 1804

Output Power and Distortion

Lists output power ratings and distortion specifications for PLX 1104/1804.

Frequency Response and Signal-to-Noise

Details frequency response and signal-to-noise ratio for PLX 1104/1804.

Input Sensitivity, Impedance, and Protection

Covers input sensitivity, impedance, dynamic headroom, damping factor, and protection.

Specifications: PLX 1802-3602 Series

Output Power and Distortion

Lists output power ratings and distortion specifications for PLX 1802-3602.

Frequency Response and Signal-to-Noise

Details frequency response and signal-to-noise ratio for PLX 1802-3602.

Input Sensitivity, Impedance, and Protection

Covers input sensitivity, impedance, dynamic headroom, damping factor, and protection.

Appendix A: Speakon Wiring Reference

Two-Wire Single-Channel Speakon

Illustrates the two-wire, single-channel connection for Speakon loudspeakers.

Four-Wire Two-Channel Speakon

Illustrates the four-wire, two-channel connection for Speakon loudspeakers.

Bridge Mode Speakon Connection

Shows the correct Speakon wiring for bridge mode output connection.

Contacting QSC Audio Products

QSC Contact Information

Provides mailing address, telephone numbers, fax, and email for QSC.

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