dbx Pro QUANTUM user manual Clip Level High-Frequency Information Completely Lost

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QUANTUM

TypeIV™ White Paper Appendix B

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	A/D Clip Level
-4	} TYPE IV™ Over Region
	Time
-4	} TYPE IV™ Over Region
	} TYPE IV™ Over Region
0 dB FS	A/D Clip Level

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

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!

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Contents Quantum Important Safety Instructions Declaration Conformity Quantum Table of ContentsFigure Index Page Intro Introduction What is QUANTUM?Warranty Introduction What is QUANTUM?Service Contact Info Quantum Section Front Panel Getting StartedRear Panel Connections Getting Started Section Front Panel Quantum Wizard Signal PathGetting Started Section Mastering and the Quantum Quantum is a Mastering Processor that has many featuresQuantum Navigation Multiband Compressor NavigationNavigation Section Broadband Compressor Navigating the Broadband CompressorMultiband Gate Navigating the Multiband GateNavigation Section Broadband Gate Navigating the Broadband GateMultiband Limiter Navigating the Multiband LimiterNavigation Section Broadband Limiter Navigating theBroadband LimiterEQ/XOver Navigating the Multiband EQ/XOverNavigation Section EQ/SEQ Navigating the Broadband EQ/SEQNorm/Output Navigating Norm/OutputNavigation Section Other Navigating OtherUtility Navigating UtilitySection FX Chains Software OperationsChain Type Stereo Broadband Software Operations Section FX ChainsMono Input CH1 or CH2 Chain Type MonoProgram Pop Master Software Operations Section Programs/SetupsSection Saving a SetupSaving a Program Software Operations Section Saving a SetupReplace Old Store NewMeters Bypass FunctionAnalog Meters TSE Level MetersDigital Meters Software Operations Section MetersMeter Options CompressorLimiter Monitor OutputsGate / Expander De-EsserDetailed Multiband Compression Detailed ParametersDetailed Parameters Section Multiband Compression Broadband Compression Detailed Parameters Section Broadband Compression Attack 0.1 to 200 m Sec per band or global Ratio 11.0 to 115 per band or globalRelease 360 to 5 dB / Sec per band or global Max ATT 0 to Inf. dB per band or globalMultiband Limiting Detailed Parameters Section Broadband GateAttack .01 to 200 m Sec per band or global Broadband LimitingLimiter On/Off Type PkStop+/RMSEQ On/Off Detailed Parameters Section Broadband LimitingPOS Pre/Post Type Const Q / Adapt QXOver Schain EQ On/Off Detailed Parameters Section SEQSEQ1 FC 20.0 Hz to 20.0 kHz SEQ2, 3, 4 FC 20.0 Hz to 20.0 kHzType Stereo AdjustDe-Esser Detailed Parameters Section Ambience13 TCM Output NormalizationDither Out All or Digital Detailed Parameters Section OutputShaping S1 or S2 Page Utilities Input Output UtilitiesMidi CC Map Utilities Section OutputDigital Input Controls Midi Channels Setup Sysex DataMidi Program Changes Sysex DumpMisc Utilities Section Setup Sysex DataA/D Calibrate Page Guide Analog Mastering Application GuideHardware SoftwareApplication Guide Section Digital Mastering DAW to DAT 586 Application Guide Section Analog TrackingDigital Tracking Application Guide Section Analog Mixing Digital Mixing Application Guide Section Analog to Digital Converter Sample Rate Converter QUANTUMAppendix Change Default Startup Program Hard & Soft ResetsAppendix a Miscellaneous Information Front Panel LockoutTypeIV White Paper Appendix B By Roger JohnsonConverted Level vs. Input Level Appendix B TypeIV White PaperType Amplitude Time Clip Level High-Frequency Information Completely Lost Clock Modes Appendix C Midi Clock InfoFig. C.1 Quantum Sync InputFig. C.2 Appendix C Miscellaneous Clock InfoRequest One Setup 02h ProceduresReceive One Setup 43h Sysex Definitions Appendix DAppendix D Sysex Definitions Sysex Setup Dump Sample Reset Device 21hProcedure Setup Dump Version Setup Type and Setup NumberMidi CC MultiBand Chains Appendix E Midi CC TablesMidi CC Stereo Non-MultiBand Midi CC Tables Appendix E Midi CC MultiBand ChainsMidi CC Stereo Non-Multiband Midi CC Dual Mono ChainsMidi CC Tables Appendix E Midi CC Dual Mono Chains Factory Programs Appendix F Factory PresetsMono Factory SetupsStereo Specifications Appendix G SpecificationsAppendix H Appendix H Quantum Harman International Company