dbx Pro QUANTUM }

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Appendix B

QUANTUM

67

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Now you’re probably wondering, “What’s the catch? I can’t get something for nothing so what did I give up?”

You may be worried that your A/D noise floor got 4 dB worse because we borrowed the top 4 dB of your converter.

This is certainly a valid concern. Fortunately, we have the answer! Without going into the confidential technical details,

by using our proprietary analog and digital Type IV™ processing, we reclaim the original A/D noise level! So what you

get is free headroom!

The benefits of the dbx Type IV™ Conversion System can easily be heard by switching it in and out while lis-

tening to signals with high-level peaks captured in the Type IV™ Over Region. You will notice an obvious audible dif-

ference. With Type IV™ bypassed, you can’t help notice the harsh, edgy sound of the A/D converter clipping. With Type

IV™ enabled, those nasty artifacts disappear revealing a more open and natural sound. With Type IV™ enabled, you will

get a more accurate and pure representation of the original wide-dynamic-range signal. You will absolutely agree that

we really do give you “something for nothing.” We give you peace of mind knowing that you never have to worry about

clipping your A/D again! And when you listen to the noise floor of your A/D, you’ll realize that we never compromise

your noise performance with Type IV™!

The dbx Type IV™ Conversion System succeeds in combining the best of the analog and digital worlds to cap-

ture the truest essence and fullest dynamic range of audio signals. Who else but dbx would bring you this technology!

A/D Clip Level

TYPE IV™ Over Region

Figure 3d - Type IV Mapping Preserves High-Frequency Information

Amplitude

Time

}

TYPE IV™ Over Region

}A/D Clip Level

0 dB FS

0 dB FS

-4

-4

Figure 3c - Disproportionate Loss of High-Frequency Information Due to Clipping

Amplitude

Time

High-Frequency Information Completely Lost High-Frequency Content

A/D Clip Level

A/D Clip Level

Low-Frequency Content

High-Frequency Information Completely Lost

QUANTUM User Manual

TypeIV™ White Paper

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