Related Manuals for B-52 US-4000
Summarization of Contents
Welcome to the B-52 Family
Unpacking and Installation
Guide on how to unpack and set up the US-Series amplifier correctly.
Front Panel Controls
Rack Mounting Points
Points to bolt your amplifier into a rack.
Air Vents
Description of cooling fans and foam filters; caution on blocking vents.
Blue Illuminated Strips
Explanation of the blue strips that glow when the amplifier is turned on.
Channel 1 and Channel 2 Level Controls
21-position detented controls for adjusting output levels.
Signal Indicators
Green LEDs indicating signal reception and amplification.
Clip Indicators
Red LEDs indicating clipping threshold; warning about overloading.
Rear Panel Controls
Fan(s)
Description of cooling fans with variable speed controls.
Input Connectors
Electronically balanced Combo connectors for XLR or 1/4" TRS plugs.
Link Connectors
XLR jacks used to send a signal to a separate amplifier.
HPF (High Pass Filter) Switch
Slide switches to activate built-in High Pass filters below 50Hz.
Rear Panel Controls (cont.)
Limiter Switch
Switch to activate/deactivate clip limiters to prevent distortion.
Bridge / Stereo / Parallel Switch
Switch to change amplifier operating mode: STEREO, BRIDGED MONO, or PARALLEL MONO.
Binding Post Outputs
Use binding posts to connect loudspeakers; options for fixed installations.
Rear Panel Controls (cont.)
Speakon™ Output Connectors
Speaker outputs for connecting cables fitted with Speakon™ connectors.
Protection
Initial Power-Up
Protection circuitry activation during power-up sequence.
Thermal Protection
Protection against excessive heatsink temperatures.
Protection (cont.)
Transformer Thermal Protection
Protection against overheating of the power transformer.
DC Voltage Protection
Protection against DC voltage detection at the loudspeaker output.
Subsonic Frequency Protection
Built-in high-pass filters to prevent subsonic audio signals.
Current Limiting Protection
Protection against dangerously high current through output transistors.
Short Circuit
Protection against output short circuits.
Protection (cont.)
Clip Limiters
Intelligent clipping circuitry to protect loudspeakers and amplifier.
Setting Up Your US-Series Amplifier
Clip Limiter Setup
Explanation and setup for the clip limiter function.
HPF (High-Pass Filter) Setup
Explanation and setup for the high-pass filter function.
Mode Select
Stereo Mode
Description of independent channel operation for stereo sound.
Parallel Mode
Description of amplifying one signal across both channels.
Bridged Mono Mode
Combining channels for a powerful single-channel amplifier.
Connecting Your Speakers
Stereo Mode Connections
Diagrams and instructions for connecting speakers in stereo mode.
Parallel Mode Connections
Diagrams and instructions for connecting speakers in parallel mode.
Bridged Mono Connections
Diagrams and instructions for connecting speakers in bridged mono mode.
Wiring
XLR Balanced Wiring Guide
Guide for balanced XLR connections, including pin assignments.
Unbalanced 1/4" Connector
Description of unbalanced 1/4" connector wiring.
Balanced 1/4" Connector
Description of balanced 1/4" connector wiring.
Speakon™ Output Connector
Description of Speakon™ connector wiring and pin assignments.
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