dbx Pro QUANTUM 30, 4.1 Multiband Compression

Detailed Parameters

®

30

Section 4 QUANTUM

QUANTUM User Manual

Section 4

Within the multiband compressor menu on the QUANTUM the following parameters are user

adjustable on all setups.

Compressor LOC/On/Off

Local (per band control) or global on and off.

Band 1 to 4 On/Off

Turns on or off each independent band

OverEasy® 1-10 (per band or global)

The point when the QUANTUM (or any compressor) starts to compress is the "knee." When the

QUANTUM starts to reduce the level of a signal abruptly right as it passes over the threshold

this is called "hard knee" compression. OverEasy® (soft knee as it is sometimes called) is when

the level of the signal is compressed gradually. OverEasy® compression starts to compress

before the level of the signal reaches the threshold and reaches full compression after the vol-

ume has gone above the threshold. This OverEasy® compression by its very nature sounds

much smoother and more natural and will be used for most applications. When it is gentle (nat-

ural sounding or light) compression that you are looking for, the QUANTUM has what we call

VariKnee™. VariKnee™ gives you ten levels of OverEasy® compression to choose from (1 being

almost hard knee and 10 being the most OverEasy®). This lets you choose the exact knee that

is needed for the dynamic effect you are looking for.

Auto LOC/On/Off and Auto On/Off

Auto can be turned on/off per band or globally. When Auto mode is on, the QUANTUM auto-

matically sets the Attack, Hold, and Release times for the signal. The auto mode constantly

adjusts these parameters in real time for optimum performance from the unit.

Fig.4.1

4.1 Multiband Compression

Contents

Main IMPORTANT SAFETY INSTRUCTIONS WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING: SAFETY INSTRUCTIONS Normal Alt BLACK IMPORTANT SAFETY INSTRUCTIONS ELECTROMAGNETIC COMPATIBILITY DECLARATION OF CONFORMITY Introduction Section 1 - Getting Started Section 2 - Navigation Section 3 - Software Operations Section 4 - Detailed Parameters Figure Index Page Page INTRODUCTION Introduction 1.2 Service Contact Info iii 1.3 Warranty 1.1 What is QUANTUM? (cont.) Page Page 2 1.1 Rear Panel Connections 1.2 Front Panel 1.2 Front Panel (cont.) Analog Level Meters TSE Audio Level Meters LCD Display Data Wheel / Selector 4 1.2 Front Panel (cont.) 1.3 QUANTUM Wizard 1.4 Signal Path Getting Started Section 1 5 The Quantum is a Mastering Processor that has many features: 1.5 Mastering and the Quantum 6 1.5 Mastering and the Quantum (cont.) Page 8 4 All Bands 1 Navigating the"Multiband Compressor" NAVIGATION 2.1 Multiband Compressor 9 2.2 Broadband Compressor Navigating the "Broadband Compressor" 10 2.3 Multiband Gate Navigating the "Multiband Gate" 11 2.4 Broadband Gate Navigating the "Broadband Gate" 12 2.5 Multiband Limiter Navigating the "Multiband Limiter" Navigating the"Broadband Limiter" 14 2.7 EQ/XOver EQ XOver Navigating the "Multiband EQ/XOver" 15 2.8 EQ/SEQ The "EQ/SEQ" button toggles between EQ and SEQ. Depress once to access EQ and a second time for SEQ EQ SEQ Navigating the "Broadband EQ/SEQ" SChain On/Off Type 16 2.9 Norm/Output Normalize Output Navigating "Norm/Output" 17 2.10 Other Navigating "Other" 18 2.11 Utility Navigating "Utility" Page 20 Fig.3.1 3.1 FX Chains Dynamics SOFTWARE OPERATIONS 21 3.1 FX Chains (cont.) Fig 3.2 Chain Type: Stereo Broadband Dynamics 22 3.1 FX Chains (cont.) Chain Type: Mono Dynamics 23 3.2 Programs/Setups Program: 1 "Pop Master 1" Stereo Setup Library 24 3.3 Saving a Setup Program 3: "Pop Master 1" Mono Setup Library 3.2 Programs/Setups (cont.) 25 Replace Old: 3.4 Saving a Program Store New: Saving a program 26 BYPASS 3.6 Meters Analog Meters TSE Analog Meters 27 Digital Meters Meter Options Compressor Gain Reduction Meter Input/Output Curve 28 Limiter 3.7 Monitor Outputs Gate / Expander De-Esser Page 30 4.1 Multiband Compression Compressor LOC/On/Off Band 1 to 4 On/Off OverEasy 1-10 (per band or global) 31 4.1 Multiband Compression (cont.) Threshold -60 to 0 dB (per band or global) Ratio 0.75 to Inf:1 (per band or global) Gain -20 to +20 dB (per band or global) 32 4.2 Broadband Compression Compressor On/Off OverEasy 1-10 Auto On/Off 33 4.2 Broadband Compression (cont.) Gain -20 to +20 dB 4.3 Multiband Gate Attack 0.1 m Sec to 200 m Sec 34 4.3 Multiband Gate (cont.) 4.4 Broadband Gate 35 4.4 Broadband Gate (cont.) 4.5 Multiband Limiting 36 4.5 Multiband Limiting (cont.) Attack .01 to 200 m Sec (per band or global) 4.6 Broadband Limiting Release 360 to 5 dB / Sec (per band or global) 37 4.6 Broadband Limiting (cont.) Release 360 to 5 dB / Sec (per band or global) 4.7 EQ EQ On/Off 38 4.7 EQ (cont.) 4.8 XOver 39 4.9 SEQ 40 4.9 SEQ (cont.) 4.10 Type IV 4.11 Stereo Adjust 41 4.12 Ambience 4.13 TCM 4.14 De-Esser 42 4.14 De-Esser (cont.) Amount 0 to 100% 4.15 Normalization 4.16 Output Page Page Page Utilities 46 Section 5 QUANTUM UTILITIES 5.1 Input 5.2 Output CONNECTIONS 47 5.2 Output (cont.) SCMS 5.3 Digital Input Controls 5.4 MIDI CC Map Section 5 QUANTUM 5.6 MIDI Program Changes 5.7 SYSEX Dump 5.8 Setup SYSEX Data MIDI CH Page Page Page 52 6.1 Analog Mastering 53 6.2 Digital Mastering 54 6.3 DAW to DAT 55 6.4 Analog T racking CHANNEL TWO CHANNEL ONE 2. Change the CLOCK to INT96. 56 CHANNEL TWO CHANNEL ONE 2. Change the CLOCK to desired sample rate. 4. Set the Bits to match the digital recorders input format. 57 6.6 Analog Mixing 58 6.7 Digital Mixing 59 6.8 Analog to Digital Converter CHANNEL TWO CHANNEL ONE 2. Change the CLOCK to desired internal sample rate. 60 6.9 Sample Rate Converter Page Appendix A QUANTUM QUANTUM dbx Type IV Conversion System White Paper by Roger Johnson Page Page Appendix B QUANTUM Figure 3a - Signal Having Low and High Frequency Content Amplitude Time Amplitude } 68 MIDI Clock Info Appendix C QUANTUM C.1 Clock Modes Possible Clock Modes 1.Analog In 2.Digital in - AES Appendix C Miscellaneous Clock Info 69 C.2 QUANTUM Sync Input 70 Appendix C QUANTUM Sync Source A Quantum C Sync Source A Quantum C C.2 QUANTUM Sync Input (cont.) Daisy Chain Configuration Appendix D Hex Value Definition Procedures Request One Setup (02h) Receive One Setup (43h) Appendix D QUANTUM Request Bulk Dump (49h) Receive Bulk Dump (48h) Receive Key Scan Code (54h) Receive Key Accepted (56h) Appendix D 74 Appendix E QUANTUM 74 E.1 MIDI CC - MultiBand Chains Appendix E 75 E.1 MIDI CC - MultiBand Chains (cont.) E.2 MIDI CC - Stereo Non-MultiBand 76 Appendix E QUANTUM E.2 MIDI CC - Stereo Non-Multiband (cont.) E.3 MIDI CC - Dual Mono Chains Appendix E 77 E.3 MIDI CC - Dual Mono Chains (cont.) 78 Appendix F QUANTUM Factory Presets F.1 Factory Programs Appendix F 79 Stereo: Mono: F-2 Factory Setups Appendix G QUANTUM Specifications