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BSS Audio DPR 402 User Manual

BSS Audio DPR 402
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DPR 402
User Manual
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BSS Audio DPR 402 Specifications

General IconGeneral
BrandBSS Audio
ModelDPR 402
CategoryCompressor
LanguageEnglish

Summary

Compressors and Limiters

The Need for Gain Control

Explains the human ear's wide dynamic range and electronic limitations. Discusses usable dynamic range and headroom.

Compressor and Limiter Fundamentals

Defines compressors and limiters, their operation, and differences in gain reduction.

The Effect of Compression on Sound

Compression Principles

Illustrates how threshold affects compression and the impact of different ratios on signal levels.

Attack, Release, and Ratio Explained

Details the function of attack time, release time, and ratio in controlling signal dynamics.

De-essing and Peak Limiting

De-essing Concepts

Explains de-essing as selective high-frequency compression to control sibilance.

Peak Limiting Concepts

Introduces peak limiting as a fast-acting gain reduction for transient control.

The BSS DPR-402

Device Overview

Introduces the DPR-402 as a versatile stereo unit combining compression, de-essing, and peak limiting.

Earthing Requirements

Electrical Grounding Safety

Details mandatory earthing of the appliance for safety and proper system grounding.

Unpacking

Unit Unpacking and Inspection

Instructions for unpacking, inspecting for damage, and retaining packing materials.

Getting to Know the DPR-402

Front Panel Controls and Indicators

Identifies and describes the front panel controls and metering displays.

Rear Panel Connections and Features

Details the rear panel connectors, switches, and voltage selector.

Mechanical Installation

Rack Mounting and Ventilation

Specifies rack space requirements and advises on placement to minimize noise.

Mains Power Connection

Voltage Selection and Fusing

Explains voltage selection, fuse types, and replacement procedures.

Grounding and Power ON Indicator

Details grounding requirements and the function of the power ON indicator LED.

Input and Output Connections

Input Signal Wiring

Describes balanced and unbalanced input wiring on XLR connectors.

Output Signal Wiring

Details balanced and unbalanced output wiring on XLR connectors.

Stereo Link and Barrier Strip Facilities

Explains stereo linking, barrier strip connections, and peak limiter switch.

Compression Controls

Threshold and Ratio Adjustment

Explains the threshold control range and the function of the ratio control.

Attack and Release Time Settings

Details the attack and release time controls and their effect on signal response.

AUTO TIME and GAIN Control

Describes the auto time feature and the gain control for level compensation.

BYPASS and MODE Switch Functions

Explains the bypass switch for quick function disabling and the mode switch for de-essing.

Compression Meters

Below Threshold and Gain Reduction Meter

Details the LEDs indicating input signal level relative to threshold and amount of gain reduction.

Output Level Meter and Input Switch

Explains the output level meter and the meter input switch for signal comparison.

MON S.C. Switch Function

Describes the MON S.C. switch for monitoring control side chain signals.

De-essing and Peak Limiting Operations

Broadband De-essing Configuration

Explains broadband de-essing setup using DE-ESS and FREQ controls or MODE switch.

HF Only De-essing Configuration

Details HF only de-essing setup using the MODE switch and compressor controls.

Peak Limiting Operation and Settings

Describes peak limiter operation, threshold calibration, and LED indicators.

Rear Barrier Strip Applications

Patching External Equipment

Details using the barrier strip for inserting external filters into side chains.

Repatching for Special Effects

Lists various configurations for special effects using barrier strip links.

Stereo Linking Configurations

Explains different methods for stereo linking the unit's channels.

Operation and Application Examples

Standard Compression Settings

Provides initial settings for general compression and dynamic adjustment tips.

De-essing Wide Band Applications

Details settings for wide band de-essing with simultaneous compression.

HF De-essing with Dynamic Control

Explains HF only de-essing with full dynamic control and peak limiter usage.

Troubleshooting

Common Output and Fuse Problems

Addresses no output issues, fuse failures, and servicing recommendations.

Glossary

Audio Signal and Compression Terms

Defines terms like Active, Amplitude, Attack Time, Balanced, Breathing, Bright up, Compressor, dB, dBm.

Technical Measurement Definitions

Defines terms like dBV, Distortion, Drop-in, Equalisation, Frequency, Frequency Response, Gain Reduction, Headroom, Impedance.

Specifications

General and Compressor Specifications

Lists general electrical specs, input/output levels, frequency response, noise, distortion, and compressor parameters.

De-esser, Peak Limiter, and Facilities Specs

Details de-esser and peak limiter specs, notes, and available facilities like metering.

Mounting Requirements and Weight

Specifies physical dimensions, mounting type, power consumption, and unit weight.

Warranty Information

Product Warranty Details and Contact

Outlines the one-year warranty against defects, exclusions, and contact information.

User Notes