dbx Pro 480 user manual Filter Type Wire, Lowpass, Highpass and Bandpass, Lowpass 20Hz to 20kHz

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Section 4

Detailed Parameters

DriveRack

 

 

Lowpass, Highpass or band pass filter with adjustable frequency and slope. The Dual filter is a case that splits the signal with a filter on each channel. The Crossover options are grouped into 2, 3 or 4 band categories. Each Crossover give control of 1, 2 or 3 crossover points respec- tively. A crossover point is where the Lowpass and Highpass filter meet. The user may con- trol the Lowpass edge, Highpass edge or both using the Center fc parameter. The Crossover type allows selection of Butterworth, Bessel or Linkwitz-Riley filter types with roll-off or slopes of 6-24dB/Octave (Butterworth and Bessel) or 12-48dB/Octave (Linkwitz-Riley). In traditional analog Crossovers using Linkwitz-Riley filters, the low and high frequencies and slopes are set equal. With the Crossover menu, the following parameters are available with various Crossovers.

A complete diagram of each crossover used in the 480, 481 and 482 DriveRack™ units can be found in section A.7 of the Appendix.

4.5.1 1X1, 2X2, 3X3, 4X4 FILTERS

Filter Type - Wire, Lowpass, Highpass and Bandpass

Selects the desired filter type.

Lowpass - 20Hz to 20kHz

Selects the desired Lowpass crossover frequency.

Highpass - 20Hz to 20kHz

Selects the desired Highpass crossover frequency.

Low Slope - 6-24dB/Octave

Sets the Lowpass slope of the crossover filter.

High Slope - 6-24dB/Octave

Sets the Highpass slope of the crossover filter.

4.5.2 DUAL FILTER

Filter Type 1 - Wire, Lowpass, Highpass and Bandpass

Selects the desired filter type.

Lowpass 1 - 20Hz to 20kHz

Selects the desired Lowpass crossover frequency.

Highpass 1 - 20Hz to 20kHz

Selects the desired Highpass crossover frequency.

Low Slope 1 - 6-24dB/Octave

Sets the Lowpass slope of the crossover filter.

High Slope 1 - 6-24dB/Octave

Sets the High pass slope of the crossover filter.

Filter Type 2 - Wire, Lowpass, Highpass and Bandpass

Selects the desired filter type.

Lowpass 2 - 20Hz to 20kHz

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Contents 480 Important Safety Instructions Declaration Conformity DriveRack Table of ContentsDriveRack Intro DriveRack features IntroductionDriveRackDefining the DriveRack System DriveRackIntroduction 480R DriveRack featuresWarranty Service Contact InfoIntroduction SectionSection Rear Panel Connections Getting StartedInputs Front PanelLCD Display Function ButtonsInput Meters Power SwitchThreshold Meters Output MetersGround Lift Switch Outputs 1-8 Euroblock ConnectorsProgram Up and Down Program DisplayPC LED Remote LEDRS485 Control Thru Bus DB-9 connector type Program Up and Down Functions Editing Functions Basic Navigation ModesFX Button Array Overview DriveRack Parameter Knob Encoders Coarse/Fine Operation Parameter Knobs Horizontal-Vertical Navigation ModeNavigating the EQ Sections DriveRackNavigating the Xover Navigating the RTA Navigating the Delay Navigating the Dynamics Section Navigating the Other Section Navigating the Utility Section Configuration Program Definition Configuring the DriveRackNavigating Factory Programs Selecting ProgramsNavigation Modes Saving Factory Programs Changes Editing Factory ProgramsDriveRack Input Routing Creating a User ConfigurationPre Crossover EQ Delay SectionNotch Filter CrossoverDriver Alignment Delay Output Routing and Phase CompensationLinking Modules Selecting and Moving Crossovers Saving Configuration Changes Detailed Detailed Parameters Input RoutingPre-Crossover EQ Zizz -6dB to 6dB Boom -6dB to 6dBSHOW/HOUSE 31 Band Graphic EQ S or H EQ On/Off Parametric EQ P EQ On/OffSlope 1 3-12dB/Octave Band 1 Frequency 20 to 20kHz Low ShelfLevel 1 -12 to 12 dB Band 2-8 Frequency 20 to 20kNotch Filters N Pre Crossover Delay DLYFilter Type 1 Wire, Lowpass, Highpass and Bandpass Filter Type Wire, Lowpass, Highpass and BandpassFilter Type 2 Wire, Lowpass, Highpass and Bandpass Lowpass 20Hz to 20kHzLow Slope 2 6-24dB/Octave Highpass 2 20Hz to 20kHzHigh Slope 2 6-24dB/Octave Low Fc 20Hz to 20kHzLow Fc 2 20Hz to 20kHz High Slope 1 6-24dB/Octave BW, Bessel 12-48dB/Octave L-RCenter Fc 2 20Hz to 20kHz High Fc 2 20Hz to 20kHzPost-CROSSOVER PEQ EQ Compressor/Limiter DYN Threshold -40 to +20dBu Speaker Alignment Delay DLYRatio 1.0 to Inf1 Gain -20 to +20 dBOutput Routing Phase Off, 0 toLevel/Shift On/Off Level Inf, -9.5 to 20.0dBProgram Saving Program Changes Storing ChangesDriveRack Saving Configuration Changes Utilities Utilities Network IDSecurity Levels Security Passwords Entering Security Password Program List Program Change Mode PC Comm Mode Contrast AdjustmentMidi Channels Power Up Mutes On/SavedMidi Program Dumps Program DumpsSetup Sysex ID Mic Pre Set upSysex Dump Cue AFL Redundancy EnableFunctions Network Overview Network FunctionsConnectors Recommended Cable SpecificationsNetwork Connections Specs Cable LengthsBackbone Connections Network Connections ApplicationsConnection to the 480R Connection to the GUI Interface Termination Master/Slave Assignments Setting Identification NumbersControlling Remote Units Master/Slave Assignments cont’dDriveRack Replacing Units RedundancyNetwork Trouble Shooting System Requirements PC GUI InstallationBasic Venue View DriveRack DriveRack 480R Rear Panel Connections 480R 480R Remote ControllerFront Panel 480R SectionRear Panel Connections 480P Front Panel 480P Using the RTA Controlling Slave Devices Hot Key AssignmentsDriveRack Guide 4-Way Front of House Application GuideHardware SoftwareDriveRack C-R + Sub + Rear BiAmp & In-Ear Dedicated FOH Crossover DriveRackStand Alone Monitor EQ DriveRackAppendix Sysex Procedures Sysex Procedure and DataMidi SysEx Sysex Message End byteProcedure Sysex Setup Dump SampleReceive One Program 42h Receive Bulk Dump 48hProgram Bank and Program Number Program Dump VersionProgram Transmit Count...Lo Bytes, Hi Bytes Sysex EndPower Up Quick Key Options Factory ResetToggle RS-232/MIDI Flash DownloadsDriveRackAppendix a SpecificationsSpecifications 481 DriveRack Per input channel not to exceed 10 for all input channels Specifications 482 DriveRack Specifications 480R Remote Controller DriveRack DriveRack Crossover Diagrams101 3X3 1-band 103 4X8 2-band Gain Level Jumpers Input and Output Diagrams Pinking a Room Wire Diagrams Harman International Company

480 specifications

The dbx Pro 480 is a professional-grade dynamics processor renowned for its versatility and exceptional performance in various audio applications. Designed for both live sound and studio environments, the dbx Pro 480 stands out as an essential tool for sound engineers and musicians alike.

One of the main features of the dbx Pro 480 is its dual-channel operation, which allows users to process two audio signals simultaneously. This functionality makes it particularly advantageous for stereo mixes, providing the ability to manage dynamics across left and right channels cohesively. The unit employs patented dbx OverEasy compression technology. This unique approach to compression allows for smooth transitions between compression and limiting, preventing abrupt changes in audio levels that can disrupt the listening experience. The result is a more musical sound, making it ideal for vocals, instruments, and other dynamic sources.

Additionally, the dbx Pro 480 boasts comprehensive control options, including adjustable ratio, threshold, attack, and release parameters. This level of control enables users to tailor the dynamics processing to fit specific audio material, whether subtle shaping or more aggressive control is required. The inclusion of a high-pass filter on the sidechain input further enhances its versatility, allowing for frequency-dependent dynamics processing that can be particularly useful in managing low-end rumble or controlling sibilance in vocals.

Another notable characteristic of the dbx Pro 480 is its robust build quality, designed to withstand the rigors of both studio and live environments. The device features a rugged metal chassis that protects its internal components while providing reliable performance under various conditions. Additionally, high-quality XLR inputs and outputs ensure that audio signals remain clean and free of interference.

In terms of connectivity, the dbx Pro 480 is equipped with balanced connections to minimize noise and signal degradation, making it suitable for professional setups. Its intuitive front-panel interface includes LED metering for easy monitoring of input and output levels, facilitating prompt adjustments on the fly.

In conclusion, the dbx Pro 480 is a powerful dynamics processor that blends advanced technology with user-friendly features. Its dual-channel processing, unique compression algorithms, and robust build quality make it a top choice for audio professionals seeking to enhance their sound with precision and control. Whether in a recording studio or a live performance setting, the dbx Pro 480 continues to be an invaluable asset in the audio processing landscape.
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