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COMPACT PLUS
BG-450
OWNER'S MANUAL

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Summarization of Contents

Important Safety and Usage Information
Pre-Use Inspection and Warnings
Instructions for inspecting the amplifier upon receipt, ventilation, accessory use, and protection from fire/shock.
Product Disposal and Electrical Safety
Guidance on responsible disposal of the product and the importance of a grounded mains socket.
Compact Plus Amplifier Overview
Design and Performance
Details the compact design, powerful output, and enhanced frequency response of the amplifier.
Technical Specifications
Highlights the single channel preamp, 5-band EQ, Class D amplifier, and power output.
Understanding Amplifier Power
Power vs. Loudness Explained
Discusses the relationship between amplifier power, speaker efficiency, and loudness.
BG450 Power Advantages
Explains the BG450's higher peak and continuous power output, enhanced design, and Class D efficiency.
Product Features
Input and Tone Control Features
Lists switchable input, auxiliary input, and dedicated 5-band EQ for tonal control.
Connectivity and Output Features
Details balanced line output, line in/out, extension speaker out, and protection circuitry.
Power and Circuit Specifications
Highlights power output ratings, low-noise pre-amplifier, and universal AC input.
Top Panel Controls and Indicators
Input and Level Management
Covers Input Jack, Clip Light, Input Switch, and Input Level Control for instrument connection.
Effects, Auxiliary, and Output Jacks
Details FX Send/Return, Mix Control, Aux Input/Volume, and Headphone Socket.
Tone and Volume Controls
Explains the Low Bass, High Bass, Low Mid, High Mid, Treble EQ, and Master Volume controls.
Power and Status Indicators
Describes the Power LED Indicator and its standby function.
Back Panel Connections
Direct Output Socket
Details the XLR Direct Output Socket for recording or PA mixing consoles.
Balanced Line Output Options
Explains the Balanced Line Pre/Post EQ switch and the Ground Lift Switch.
Audio Input and Output Jacks
Covers Line In, Line Out, and Extension Speaker Out connections.
Power Supply and AC Input
Describes the Power On/Off Switch and the AC Input Socket.
Operation and Positioning Guidance
Initial Setup and Cautionary Notes
Instructions for setting volume, muting input, and avoiding amplifier overload.
Optimizing Sound with Placement
Guidance on positioning the amplifier for optimal bass response and sound quality.
Understanding Room Acoustics
Explains how room acoustics, reflections, and speaker placement affect bass frequencies.
Transporting and Storing the Amplifier
Transporting the COMPACT PLUS
Recommendations for using an external case or cover during transport.
Storage and Environmental Precautions
Guidelines for storing the amplifier in a dry location and avoiding extreme temperatures or moisture.
Product Specifications
Amplifier Specifications
Details amplifier type, power output, signal-to-noise ratio, and impedance.
Speaker and Enclosure Details
Provides speaker compliment, frequency response, sensitivity, and impedance.
Physical and Included Items
Lists dimensions, weight, and included accessories like power cord and cover.
Service and Warranty Information
Warranty Coverage and Activation
Details the 2-year limited warranty, activation process, and coverage for defects.
Non-Covered Damages
Lists conditions not covered by the warranty, such as improper handling or external forces.
Warranty Support and Contact
Provides guidance on contacting retailers, distributors, and PJB for warranty issues.