® QUANTUM DIGITAL MASTERING PROCESSOR User Manual
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IMPORTANT SAFETY INSTRUCTIONS LITHIUM BATTERY WARNING CAUTION! This product may contain a lithium battery.There is danger of explosion if the battery is incorrectly replaced. Replace only with an Eveready CR 2032 or equivalent. Make sure the battery is installed with the correct polarity. Discard used batteries according to manufacturer’s instructions. U.K. MAINS PLUG WARNING A molded mains plug that has been cut off from the cord is unsafe. Discard the mains plug at a suitable disposal facility.
QUANTUM Introduction 1.1 What is QUANTUM?.........................................ii 1.2 Service Contact Info........................................iii 1.3 Warranty...........................................................iii Section 1 - Getting Started 1.1 Rear Panel Connections ...................................2 1.2 Front Panel .......................................................2 1.3 Quantum Wizard ..............................................4 1.4 Signal Path ...................................
QUANTUM Table of Contents Figure Index Fig. 1.1 LCD Display ..............................................3 Fig 1.2 Signal Path..................................................4 Fig. 3.1 Stereo MultiBand Chain..........................20 Fig. 3.2 Stereo Broadband Chain ........................21 Fig. 3.3 Mono Chain Type ...................................22 Fig 3.4 Stereo Setup Selection .............................23 Fig 3.5 Stereo Setup Selection .............................24 Fig 4.1 VariKnee™ .....
QUANTUM INTRODUCTION INTRO CUSTOMER SERVICE INFO What is QUANTUM? WARRANTY INFO ®
Introduction INTRODUCTION QUANTUM Congratulations on your purchase of the dbx QUANTUM Digital Mastering Processor! For over 25 years, dbx has been the industry leader in dynamics processing. With the introduction of the QUANTUM, we apply our superior dynamics processing technology to the digital mastering process. This manual will be your guide to understanding the full functionality of the powerful QUANTUM, read it carefully.
QUANTUM Introduction 1.1 What is QUANTUM? (cont.) Imagine this scenario as an example. A client brings in a stereo mix on a sampling workstation. The mix is recorded at 96kHz/24-bit. In order to create a CD compatible mix you need to convert to 44.1kHz/16-bit. With the QUANTUM this is not a problem. Simply follow the instructions in the Application Guide in section 5. Whether you are going from the workstation to a DAW, DAT, or a stand-alone CD-R, the QUANTUM covers all the digital sample rates 96, 88.
Introduction QUANTUM 1.3 Warranty (cont.) 4. dbx reserves the right to make changes in design or make additions to or improvements upon this product without incurring any obligation to install the same additions or improvements on products previously manufactured. 5. The foregoing is in lieu of all other warranties, expressed or implied, and dbx neither assumes nor authorizes any person to assume on its behalf any obligation or liability in connection with the sale of this product.
QUANTUM Section 1 Getting Started ®
Section 1 Getting Started QUANTUM 1.1 Rear Panel Connections Analog Input/Output Connectors Each analog channel features both XLR and 1/4" TRS electronically balanced connections. They may be used in a balanced or unbalanced configuration. MIDI In and Out/Thru Connectors These connectors provide full MIDI functionality to the QUANTUM. The Out/Thru jack allows you to use the QUANTUM at any point in the MIDI chain.
QUANTUM Getting Started Section 1 1.2 Front Panel (cont.) Analog Level Meters These meters monitor analog input and output. For more on meters refer to Section 3. TSE™ Audio Level Meters These meters monitor the level of Tape Saturation Emulation. Refer to Type IV™ in Section 3. LCD Display The large LCD display shows the program, curve, digital meters, parameters, and modules selected by the function buttons and the DATA WHEEL.
Section 1 QUANTUM Getting Started 1.2 Front Panel (cont.) When working with the sidechain EQ, or the in-line EQ, the curve window changes to show a graphical representation of the 5 parametric bands in a frequency grid. Your adjustments to the 5 bands are shown in real time. Additionally, the De-Esser has its own graphical way of displaying its parameters. The frequency is shown on the bottom, or X axis, and the low frequency rolloff is shown on the side, or Y axis. 1.
QUANTUM Getting Started Section 1 1.5 Mastering and the Quantum The Quantum is a Mastering Processor that has many features: • • • • • • Multiband compression Multiband gating Multiband limiting Parametric equalizer Normalize function with gain optimization 8-24-bit dither with noise shaping These tools used together can give your recording studio the power to create the big sound associated with a mastered recording.
Section 1 Getting Started QUANTUM 1.5 Mastering and the Quantum (cont.) Now that your bands are set up for your application, you monitor them and you hear how the sub-band (band one), is the ultra-low frequencies of the kick and bass as well as some of the guitar. The low band (band two), includes the electric and acoustic guitars, the bass, and some of the low vocal frequencies. The Mid band, (band three), contains the majority of the vocals as well as the mid range frequencies of the Mid band guitar.
QUANTUM Section 2 NAVIGATION ®
Section 2 NAVIGATION QUANTUM Navigation Control of each of the bands within the QUANTUM’s multiband dynamic modules is made possible in two different ways. You may either use the “All page” or individual band adjustments. The “All page” is signified by a large “All” seen where the program number would normally be. Adjusting settings in this page will adjust the settings in all four bands as a group.
QUANTUM Navigation Section 2 2.
Section 2 QUANTUM Navigation 2.
QUANTUM Navigation Section 2 2.
Section 2 QUANTUM Navigation 2.
QUANTUM Navigation Section 2 2.
Section 2 QUANTUM Navigation 2.7 EQ/XOver Navigating the "Multiband EQ/XOver" Navigate through the Pages by depressing "Next Page" or "Prev Page" successively until arriving at the desired Page Page 1 The "EQ/XOver" button toggles between EQ and XOver.
QUANTUM Navigation Section 2 2.8 EQ/SEQ Navigating the "Broadband EQ/SEQ" Navigate through the Pages by depressing "Next Page" or "Prev Page" successively until arriving at the desired Page Page 1 The "EQ/SEQ" button toggles between EQ and SEQ.
Section 2 QUANTUM Navigation 2.
QUANTUM Navigation Section 2 2.
Section 2 QUANTUM Navigation 2.
QUANTUM Section 3 SOFTWARE SOFTWARE OPERATIONS ®
Section 3 SOFTWARE OPERATIONS QUANTUM Software Operations This section explains how signals are routed, monitored, and controlled in the QUANTUM. Changes that are made to the QUANTUM’s dynamic processing can be monitored visually and aurally at several different points in the chain. Storing, and organizing user and factory setups in task specific libraries is also covered in this section. By following the outlined steps you will quickly understand the usage and benefits of the QUANTUM’s storage system.
QUANTUM Section 3 Software Operations 3.1 FX Chains (cont.) Chain Type: Stereo Broadband PEQ may be Pre or Post Dynamics What the QUANTUM screen shows for Pre: Side-Chain PEQ Stereo Adjust CH1 CH2 Pre PEQ Ambience Gate Comp Lim De-Esser Norm Dither Noise Shape Dynamics What the QUANTUM screen shows for Post: Stereo Input Stereo Adjust CH1 CH2 Side-Chain PEQ Ambience De-Esser Gate Comp Lim Post PEQ Norm Dither Noise Shape Dynamics Fig 3.
Section 3 QUANTUM Software Operations 3.1 FX Chains (cont.) Chain Type: Mono PEQ may be Pre or Post Dynamics What the QUANTUM screen shows for Pre: Mono Input CH1 or CH2 Pre PEQ Side-Chain PEQ De-Esser Gate Comp Limiter Dither Noise Shape Post PEQ Dither Noise Shape Dynamics What the QUANTUM screen shows for Post: Mono Input CH1 or CH2 Side-Chain PEQ De-Esser Gate Comp Lim Dynamics Fig. 3.
QUANTUM Software Operations Section 3 3.2 Programs/Setups The QUANTUM has a unique method of storing your settings. It stores your changes to parameters as setups. These setups are an immediately accessible library of your changes. No matter what program you are currently working with, you can call up any setup that uses that same configuration: stereo-linked or dual mono. (See Appendix F). Each configuration has its own separate library of user/factory setups available.
Section 3 Software Operations QUANTUM 3.2 Programs/Setups (cont.) Mono Setup Library Program 3: "Pop Master 1" Mono Def. R&B Vocal Studio Voc Studio Voc Acoustic Gt Small Voc Country Voc De-ess Voc Fat Kick Thick Kick Brite Snare Slam Snare Rim Shot Tight Toms Ringing Tom Rumble Bass Slap Bass Big Piano Brite Horns Fig. 3.5 Acoustic Gt Folk Gtr Twang E Gtr 3.3 Saving a Setup Saving a setup can be done by following these steps: 1.
QUANTUM Software Operations Section 3 3.3 Saving a Setup (cont.) 2. To name your setup, there are instructions for you in the Curve Window. Press STORE when you are done. 3. You now must choose what you want to do with the setup you are going to save. You have two choices: you may write over another setup, or you may make a new one. Replace Old: Notice that as you write over an old setup, all other programs will now recall the newly saved setup.
Section 3 QUANTUM Software Operations 3.5 The Bypass Function BYPASS To bypass the QUANTUM press the BYPASS button once. All digital dynamic modules are rendered inactive. The QUANTUM also has a CLONE BYPASS mode, passes the digital audio through the QUANTUM to the digital output directly as it came in—a digital clone. To use the CLONE BYPASS mode, simply press and hold the BYPASS button for 2 seconds. All other function buttons cannot be accessed until the BYPASS button is pressed again.
QUANTUM Software Operations Section 3 3.6 Meters (cont.) Digital Meters The middle portion of the meter represents the peak level of the signal. The sides of the meter represent the average peak level. Since the digital output meter is located after dither, changes made to dither will be seen at this meter. Digital clipping is represented by a large “C” at the top of the meter. Peak Shoulder The Gain Reduction meters are a measurement of the sum of all active dynamic modules.
Section 3 Software Operations QUANTUM 3.6 Meters (cont.) Limiter The limiter’s threshold meter works on the same principle. When the signal is under the threshold setting, the signal is not being processed by the limiter section. The next part of the threshold meter is the “o”. It represents the OverEasy® range of compression.
QUANTUM Section 4 PARAMETERS DETAILED PARAMETERS ®
Section 4 Detailed Parameters QUANTUM 4.1 Multiband Compression 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.
QUANTUM Detailed Parameters Section 4 4.1 Multiband Compression (cont.) Threshold -60 to 0 dB (per band or global) Threshold is the signal level at which the QUANTUM starts to compress. If the threshold is set to -10 dBFS, then any signal larger than -10 dBFS is compressed, while any signal that has a level lower than -10dBFS is left at the same level. Light compression is where only the largest parts of the signal go over the threshold.
Section 4 Detailed Parameters QUANTUM 4.2 Broadband Compression The broadband compressor can be used in both stereo or dual mono configurations. Within the broadband compressor menu on the QUANTUM the following parameters are user adjustable on all setups. Compressor On/Off Turns compressor module on and off. OverEasy® 1-10 The point when the QUANTUM (or any compressor) starts to compress is the "knee.
QUANTUM Detailed Parameters Section 4 4.2 Broadband Compression (cont.) Gain -20 to +20 dB This is used to compensate for the gain lost during compression. By using heavy compression on a signal and than boosting the signal with the output gain we can than create a signal that sounds much louder than it was. Attack 0.1 m Sec to 200 m Sec Attack is how fast the compressor starts to compress the signal after it passes the threshold. Fast attack is useful when dealing with lots of fast transients.
Section 4 Detailed Parameters QUANTUM 4.3 Multiband Gate (cont.) Ratio 1:1.0 to 1:15 (per band or global) This is where you decide how much downward expansion you want. This ratio works backwards from that of the compressor or limiter. If a ratio of 1:4 is selected, a signal that is 1dB below the threshold will be reduced in level so that it becomes 4dB below the threshold. Attack 0.
QUANTUM Detailed Parameters Section 4 4.4 Broadband Gate (cont.) Hold 0 to 500 m Sec The Hold control sets the amount of time the gate is held open after the signal passes below the threshold point. Release 360 to 5 dB Release sets the speed at which the gate “closes” when the end of the Hold time is reached. Max ATT 0 to Inf. dB This sets the maximum amount of attenuation for the gate. 4.5 Multiband Limiting A Limiter works very much like a compressor.
Section 4 Detailed Parameters QUANTUM 4.5 Multiband Limiting (cont.) Attack .01 to 200 m Sec (per band or global) This is the speed at which the QUANTUM limiter starts to compress the signal once it has crossed the threshold. Set the attack time longer for lower frequency bands, and shorter for higher frequency bands. Hold 0 to 500 m Sec (per band or global) Hold is the time the limiter stays in gain reduction after the signal level has dropped below threshold.
QUANTUM Detailed Parameters Section 4 4.6 Broadband Limiting (cont.) Hold 0 to 500 m Sec (per band or global) Hold is the time the limiter stays in gain reduction after the signal level has dropped below threshold. Hold is useful when you want the limiter to function for a period of time after it has been triggered. Be careful not to set the hold time too long as it will not release in time.
Section 4 Detailed Parameters QUANTUM 4.7 EQ (cont.) Band 1 FC 20.0 Hz to 20.0 kHz This controls the corner frequency for the low frequency shelving EQ band. Slope 3 to 12 dB / Octave Sets the slope of the shelf. Level -12 to + 12 dB Amount of boost or cut. Adjustable in 1/2 dB steps. Band 2, 3, 4 FC 20.0 Hz to 20.0 kHz This controls the center point for the parametric EQ. Q 0.25 to 16.0 Sets the width of the boost / cut. Level -12 to + 12 dB Amount of boost or cut. Adjustable in 1/2 dB steps.
QUANTUM Detailed Parameters Section 4 4.9 SEQ When in the broadband mode, not only do you have access to the equalizer but also another EQ in the sidechain. Having EQ in the sidechain lets you boost or cut various frequencies prior to the dynamics processor detector. Cutting low-end in the sidechain will mean the detection circuit will see less low-end, thus the signal will be compressed based on it's high frequency content.º Sidechain EQ Input Detection Circuit Processing Output Fig. 4.3 .
Section 4 Detailed Parameters QUANTUM 4.9 SEQ (cont.) Slope 3 to 12 dB / Octave Sets the slope of the shelf. Level -12 to + 12 dB Amount of boost or cut. Adjustable in 1/2 dB steps. 4.10 Type IV™ The QUANTUM uses dbx Type IV™ 96 kHz converters. Type IV™ gives you more A to D headroom and the ability to add Tape Saturation Emulation. (For more information on Type IV™ and TSE™, see the White Paper on page 65 of Appendix B). Type IV™ On/Off This turns Type IV™ on and off.
QUANTUM Detailed Parameters Section 4 4.12 Ambience Ambience uses a combination of gain and compression to enhance low level information. Reverb tails and acoustic guitar finger picking are examples of sounds that can be enhanced by using the Ambience effect. Ambience On/Off Sort of self explanatory by now. Amount 1.0:1 to 5:1 This sets the amount of ambience. Width 10 to 30 dB This controls the portion of the signal that the ambience is applied to.
Section 4 Detailed Parameters QUANTUM 4.14 De-Esser (cont.) Amount 0 to 100% This controls the amount of De-Essing. The amount control is very much like a combination threshold / ratio control. A higher amount applies more De-Essing to the signal. Type HP or BP Selects the type of filter used by the De-Esser. Width Sets the Q of the Band Pass Filter. 4.15 Normalization The Normalizer in the QUANTUM adds gain to the signal right before the output.
QUANTUM Detailed Parameters Section 4 4.16 Output (cont.) Shaping S1 or S2 This lets you change between the 2 different digital noise shape algorithms. See Figure H-2 in the Appendix, pg. 82 Dither Out - All or Digital Sets the routing of the Dither output. When All is selected, the Dither is routed to the digital outputs and the D/A. When the Dither Out is set to Digital, the dithered signal is sent to the digital outputs and the full 24-bit output is sent to the D/A.
QUANTUM Section 5 UTILITIES UTILITIES ®
Section 5 UTILITIES Utilities QUANTUM The QUANTUM’s “Utility” section contains many important operations. These operations affect the QUANTUM on a global scale. This means that any changes that are made to this section affect all the presets. This global setup helps keep patching/routing consistent through all presets. If you are matching clocks, connecting inputs and outputs, or programming MIDI CC’s, this is where it all happens.
QUANTUM Utilities Section 5 5.2 Output (cont.) this variance is reduced. The QUANTUM clock output is accurate and clean, whether it is master or slave. See Appendix C for possible clock modes. SCMS This turns on/off SCMS copy protection. If you are mastering a mix on which you wish to have copy protection written, turn SCMS “ON”. This copy protection is only available with S/PDIF output. There are three possible settings: no copy, one copy, infinite copies. 5.
Section 5 Utilities QUANTUM 5.5 MIDI Channels MIDI CH Selects which MIDI channel the QUANTUM will receive program changes and CC’s on. Selections are; OFF, 1-16, OMNI. SYSEX CH Selects which MIDI channel the QUANTUM will receive SYSEX information on. Selections are; OFF, 1-16, OMNI. MERGE MIDI merging allows any incoming MIDI data to be merged with MIDI data generated by the QUANTUM. This merged data will then be transmitted to the MIDI out port. Selections are ON/OFF. 5.
QUANTUM Utilities Section 5 5.8 Setup SYSEX Data (cont.) 1. 2. 3. 4. 5 6. Enter the “Utility” menu by pressing the UTILITY button once. Press NEXT PAGE button until page 8 is reached. Use the DATA WHEEL to select which setup you would like to dump. Press the DATA WHEEL to change the cursor location to the next selection. Select the name of the preset you would like to dump. Press the UTILITY button to start the dump. 5.
QUANTUM Section 6 APPLICATIONS APPLICATION GUIDE ®
Section 6 Application Guide QUANTUM 6.1 Analog Mastering Hardware 1. 2. 3. Connect 2-track left output to the QUANTUM’s channel one input. Connect 2-track right output to the QUANTUM’s channel two input. Connect the QUANTUM’s AES/EBU or S/PDIF OUTPUT to digital recorder. Software 1. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to ANALOG. 2. Change the CLOCK to desired internal sample rate. 3. Set SRC to the final desired sampling frequency. 4.
QUANTUM Application Guide Section 6 6.2 Digital Mastering Hardware 1. 2. Connect AES/EBU or S/PDIF output of digital source to the QUANTUM’s AES/EBU or S/PDIF input. Connect the QUANTUM’s AES/EBU or S/PDIF output to AES/EBU S/PDIF of DAT machine. Software 1. 2. 3. 4. 5. 6. 7. 8. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to AES/EBU or S/PDIF. Change the CLOCK to AES/EBU or S/PDIF. Press the NORM/OUTPUT button twice.
Section 6 Application Guide QUANTUM 6.3 DAW to DAT Hardware 1. 2. Connect AES/EBU or S/PDIF output of digital source to the QUANTUM’s AES/EBU or S/PDIF input. Connect the QUANTUM’s AES/EBU or S/PDIF output to AES/EBU S/PDIF of DAT machine. Software 1. 2. 3. 4. 5. 6. 7. 8. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to AES/EBU or S/PDIF. Change the CLOCK to AES/EBU or S/PDIF. Press the NORM/OUTPUT button twice.
QUANTUM Application Guide Section 6 6.4 Analog Tracking Hardware 1. 2. Connect external Mic Preamp’s output to the QUANTUM’s input. Connect the QUANTUM’s output to analog tape machine input. Software 1. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to ANALOG. 2. Change the CLOCK to INT96. 3. Press the NORM/OUTPUT button twice. This accesses the dither and noise shaping of the output module. 4. Set the Bits to 24. 5.
Section 6 Application Guide QUANTUM 6.5 Digital Tracking Hardware 1. 2. Connect external Mic Preamp’s output to the QUANTUM’s input. Connect the QUANTUM’s AES/EBU or S/PDIF output to the digital recorder’s input. Software 1. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to ANALOG. 2. Change the CLOCK to desired sample rate. 3. Press the NORM/OUTPUT button twice. This accesses the dither and noise shaping of the output module. 4.
QUANTUM Application Guide Section 6 6.6 Analog Mixing Hardware 1. 2. Connect the analog console’s outputs to the QUANTUM’s analog inputs. Connect the QUANTUM’s analog outputs to the recorder. Software 1. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to ANALOG. 2. Change the CLOCK INT96. 3. Press the NORM/OUTPUT button twice. This accesses the dither and noise shaping of the output module. 4. Set Bits to 24. 5.
Section 6 Application Guide QUANTUM 6.7 Digital Mixing Hardware 1. 2. Connect AES/EBU or S/PDIF output of the digital console to the QUANTUM’s AES/EBU or S/PDIF input. Connect the QUANTUM’s AES/EBU or S/PDIF output to AES/EBU S/PDIF of DAT machine. Software 1. 2. 3. 4. 5. 6. 7. 8. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to AES/EBU or S/PDIF. Change the CLOCK to AES/EBU or S/PDIF. Press the NORM/OUTPUT button twice.
QUANTUM Application Guide Section 6 6.8 Analog to Digital Converter Hardware 1. 2. Connect line inputs to QUANTUM’s analog inputs. Connect the QUANTUM’s AES/EBU or S/PDIF OUTPUT to digital recorder. Software 1. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to ANALOG. 2. Change the CLOCK to desired internal sample rate. 3. Press the NORM/OUTPUT button twice. This accesses the dither and noise shaping of the output module. 4.
Section 6 Application Guide QUANTUM 6.9 Sample Rate Converter Hardware 1. 2. Connect AES/EBU or S/PDIF output of the digital source to the QUANTUM’s AES/EBU or S/PDIF input. Connect the QUANTUM’s AES/EBU or S/PDIF output to AES/EBU S/PDIF of DAT machine. Software 1. 2. 3. 4. 5. 6. 7. 8. Press the UTILITY button to enter the QUANTUM’s utility section. Change the INPUT to AES/EBU or S/PDIF. Change the CLOCK to AES/EBU or S/PDIF. Set SRC to the desired sample frequency.
QUANTUM Appendix ®
Appendix A Miscellaneous Information QUANTUM A.1 Hard & Soft Resets Occasionally, it may be necessary to perform a “Soft” or “Hard” reset. The Soft Reset resets everything except user programs. The Hard Reset Procedure will reset all programable information back to the factory defaults. To do a Hard Reset: Hard Reset (Factory Reset): 1. Turn on power with button held until "!" appears on LCD 2. Press to activate the reset sequence. Any other button will abort the reset.
QUANTUM TypeIV™ White Paper Appendix B dbx Type IV™ Conversion System White Paper by Roger Johnson The dbx Type IV™ Conversion System is a proprietary analog-to-digital (A/D) conversion process that combines the best attributes of digital conversion and analog recording processes to preserve the essence of the analog signal when it is converted to a digital format.
Appendix B QUANTUM TypeIV™ White Paper analog, we could really exploit its wide dynamic range and more completely capture the essence of the musical performance. Enter the dbx Type IV™ Conversion System. Like its related predecessor technologies—Type I™, Type II™, and Type III™—dbx Type IV™ succeeds in preserving the wide dynamic range of the original analog signal within a limited dynamic range medium.
QUANTUM TypeIV™ White Paper Appendix B Input Signal Level TYPE IV™ Over Region +12 +8 +4 0 dB FS 0 -4 dB -4 A/D Converter Linear Region Noise Floor Figure 2 - Input Signal Levels Mapped to Type IV Over Region Fig. 2 illustrates the mapping function in a different way. Input levels are shown on the left of the graph, while converted levels are shown on the right. Notice the mapping of large signal excursions to the 4 dB “Type IV™ Over Region.
Appendix B TypeIV™ White Paper QUANTUM Amplitude Time Figure 3a - Signal Having Low and High Frequency Content Amplitude A/D Clip Level Time A/D Clip Level Figure 3b - Signal of Fig.
QUANTUM Appendix B TypeIV™ White Paper Amplitude High-Frequency Information Completely Lost High-Frequency Content A/D Clip Level Low-Frequency Content Time A/D Clip Level High-Frequency Information Completely Lost Figure 3c - Disproportionate Loss of High-Frequency Information Due to Clipping Amplitude 0 dB FS } -4 A/D Clip Level TYPE IV™ Over Region Time -4 } 0 dB FS TYPE IV™ Over Region A/D Clip Level Figure 3d - Type IV Mapping Preserves High-Frequency Information Now you’re probably
Appendix C QUANTUM MIDI Clock Info C.1 Clock Modes With digital inputs, clocks are recovered from the incoming sample stream. For example, if you have a few different units digitally connected by S/PDIF, digital transfers may induce jitter into the audio stream. Syncing multiple pieces of digital equipment to a master clock reduces the jitter between them. Keeping jitter to a minimum allows for maximum fidelity. This is essential for accurate monitoring at different points along the chain.
QUANTUM Miscellaneous Clock Info Appendix C C.2 QUANTUM Sync Input CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all servicing to qualified service personnel. Disconnect mains power before servicing. QUANTUM comes with the sync input terminated.
Appendix C QUANTUM Miscellaneous Clock Info C.2 QUANTUM Sync Input (cont.) not allow the user to change the termination setting. These pieces of equipment are usually provided with a permanent termination. If you use QUANTUM with another piece of terminated equipment in a tapped configuration, you should unterminate QUANTUM’s sync input. The same is true if you wish to use several QUANTUMs in a tapped configuration. QUANTUM can also be used in a daisy chain fashion.
QUANTUM SYSEX Definitions Appendix D Hex Value Definition F0(h) System Exclusive 'Begin Message' byte 00(h) 01(h) Manufacturer's ID Number (dbx) 1E(h) 0n(h) n = units Device or SYSEX Channel number (minus one) e.g. 01(h) is device or SYSEX Ch 1...01(h) is device or SYSEX Ch 2, etc...0F(h) is device or SYSEX Ch 16 dd dd = device ID number 01(h) identifies the QUANTUM pp pp = Procedure number. The different procedure's names and general formats are described in the Procedures Section. dd(1)1, dd(1)2......
Appendix D yy zz dd(n) SYSEX Definitions QUANTUM The Setup number, 1-100 (00-63h) Byte Count Program data The Receive One Setup procedure is used to load a Setup into the QUANTUM. The number of setup bytes to be received (n) is different for each setup. If the QUANTUM is sent a Receive One setup procedure where the setup number is not a valid RAM destination, it will be ignored.
QUANTUM SYSEX Definitions Appendix D The Reset Program procedure causes the QUANTUM to reload the current saved program. Reset Device (21h) SYS_HEAD, 21(h), F7(h) The Reset Device procedure causes the QUANTUM to reboot the software as if the power had been turned off, and then back on. If edits have been made to the current program without saving, they will be lost. SYSEX Setup Dump Sample Following is a simple example of a SYSEX Setup dump.
Appendix E QUANTUM MIDI CC Tables E.
QUANTUM MIDI CC Tables Appendix E E.1 MIDI CC - MultiBand Chains (cont.
Appendix E QUANTUM MIDI CC Tables E.2 MIDI CC - Stereo Non-Multiband (cont.
QUANTUM MIDI CC Tables Appendix E E.3 MIDI CC - Dual Mono Chains (cont.
Appendix F Factory Presets QUANTUM F.1 Factory Programs 1) Pop Master1 2) Piano Track 3) Studio Voc / Acoustic Gt 4) Country Mix 5) Classical CD 6) Squash It 7) Expand It 8) Funkngroove 9) Jazz Master 10) Smooth Voc 11) Rockin CD 12) Mix Maximum 13) RAP It Up 14) Ballad CD 2 15) DanceMaster 16) Demo CD 1 17) Kick Track 18) Ambient CD 19) Telephone 20) Rock Master 21) Hip Hop CD 22) Techno Mix 23) Ballad CD 1 24) World Mix 25) Folk Master 26) Subtle Mix 27) Live CD 28) Country CD 29) Cass.
QUANTUM Appendix F F-2 Factory Setups Stereo: Mono: Default MB Default ST Mix Maximum Country Mix Folk Master Subtle Mix Pop Master1 Pop Master2 Classical CD Funkngroove Rock Master Country CD Jazz Master Cass. To CD Ambient CD Smooth Voc Rockin CD World Mix Squash It Expand It Metal CD Telephone Hip Hop CD RAP It Up Ballad CD 1 Ballad CD 2 DanceMaster Techno Mix Demo CD 1 Demo CD 2 Kick Track Live CD Choral Ens. Piano Track ST E Gtr Drum Room ST Vocal Piano Room ST Ac Gtr String Sec.
Appendix G Specifications QUANTUM Specifications Inputs Connectors: Type: Impedance: Max Input Level: CMRR: Input Gain Range: MIDI: Outputs Connectors: Type: Impedance: Max Output Level: Output Gain Range: MIDI: A-D System Performance A-D Conversion: Convertor Dynamic Range: Type IV™ Dynamic Range: THD+Noise: Frequency Response: Interchannel Crosstalk: D-A System Performance D-A Conversion: Dynamic Range: THD+Noise: Frequency Response: Interchannel Crosstalk: Female XLR and 1/4” TRS (Pin 2 and tip hot)
QUANTUM Appendix H TPDF Dither. (a) 24-Bit word output, (b) 20-Bit word output, (c) 16-Bit word output (d) 8-Bit word output. Parameters: Input -60dBFS, 1 kHz; FFT Length= 2048, Sample Rate= 48 Khz, Averages= 32; Graph Steps= 1024.
Appendix H QUANTUM 16-Bit TPDF dither. (a) Shape “off”, (b) with shape set to “S1”, (c) with shape set to “S2.” Parameters: Input -60dBFS, 1 kHz; FFT Length= 2048, Sample Rate= 48 Khz, Averages= 32; Graph Steps= 1024.
QUANTUM Appendix H (a) 24-Bit word, (b) 16-Bit truncated output, no dither. Parameters: Input -60dBFS, 1 kHz; FFT Length= 2048, Sample Rate= 48 Khz, Averages= 32; Graph Steps= 1024.
® A Harman International Company 8760 South Sandy Parkway Sandy, Utah 84070 Phone: (801) 568-7660 Fax (801) 568-7662 Int’l Fax: (219) 462-4596 Questions or comments? E-mail us at: customer@dbxpro.com or visit our World Wide Web home page at: www.dbxpro.
