Dbx 386 Manuale Utente

®386Dual VacuumTube Preampw/Digital OutUser Manual

Getting Started®386 User Manual2Section 1386Power SwitchTurns the 386 on and off.IEC Power Cord ReceptacleThis is the power cord receptacle of the 386

®Instrument InputThis unbalanced high-impedance input connection is used to insert an instrument signal direct-ly into the preamp. Use the LINE switc

Getting Started®386 User Manual4Section 1386Meter Select SwitchThis switch allows you to select display metering of either the digital or analog outpu

ANALOGAPPLICATIONS®ANALOG APPLICATIONSSection 2386

Analog Applications®3386 User Manual6Section 2386• Turn off all equipment before making any connections.• Install the 386 in your rack with the provid

®1). Make microphone connections, being careful to keep the DRIVE control in the minimum (+30 dB) position.2). Connect the 386’s Line outputs directly

DIGITALAPPLICATIONS®DIGITAL APPLICATIONSSection 3386

Digital Applications®10Section 3386Dither SwitchThis switch is used to select the dither type algorithms including: TPDF, SNR2, or None. Dither isrand

®AES/EBU Digital ConnectorThe 386 provides AES/EBU digital output formating through the XLR connector. Be sure to use shortlengths of 110Ω digital cab

WARNING FOR YOUR PROTECTIONPLEASE READ THE FOLLOWING:KEEP THESE INSTRUCTIONSHEED ALL WARNINGSFOLLOW ALL INSTRUCTIONSCLEAN ONLY WITH A DAMP CLOTH.DO NO

Digital Applications®12Section 3386Rear Panel Connections • Connect the source to the desired 1/4” TRS or XLR input. • Connect the AES/EBU or S/PDIF o

®Rear Panel Connections • Connect the source to the desired 1/4” TRS or XLR input jack. • Connect the AES/EBU or S/PDIF output of the 386 and run into

Digital Applications®14Section 3386Rear Panel Connections • Connect the source to the desired 1/4” TRS or XLR input. • Connect the AES/EBU or S/PDIF o

®Rear Panel Connections • Connect the source to the desired 1/4” TRS or XLR input jack. • Connect the AES/EBU or S/PDIF output of the 386 and run into

Digital Applications®16Section 3386The 386 gives you the unique option of utilizing the analog and digital outputs simultaneously.This option is ideal

APPENDIXSync Input InfoBlock Diagramdbx Type IV™ White PaperNoise-Shaping AlgorithmsTruncationSpecifications®APPENDIXAppendix386

Sync Input Info®18Appendix A386The dbx 386 comes with the word input 75Ω terminated. For certain configurations, you maywish to have the sync input be

®MicrophoneInput+48VLow 20dB PadPhase InvertLow Cutdbx TYPE IV Conversion SystemDSPDitherSampleRateWordLengthOutputFormatShapePeak LEDLine/Mic12AU7Tu

Type IV™ White Paper®20Appendix C386dbx Type IV™ Conversion SystemWhite Paperby Roger JohnsonThe dbx Type IV™ Conversion System is a proprietary analo

®to-noise performance since the signal is now closer to the noise floor. Because users of digital equipment have to beextremely careful not to exceed

U.K. MAINS PLUG WARNINGA molded mains plug that has been cut off from the cord is unsafe.Discard the mains plug at a suitable disposal facility. NEVER

Type IV™ White Paper®22Appendix C386Fig. 2 illustrates the mapping function in a different way. Input levels are shown on the left of the graph, while

®Figure 3b - Signal of Fig. 3a Going Beyond the A/D Clip LevelAmplitudeTimeA/D Clip LevelA/D Clip LevelFigure 3a - Signal Having Low and High Frequenc

Type IV™ White Paper®24Appendix C386Now you’re probably wondering, “What’s the catch? I can’t get something for nothing so what did I give up?”You may

®16-Bit TPDF dither. (a) Shape “off”, (b) with shape set to “S1”, (c) with shape set to “S2.” Parameters: Input -60dBFS, 1kHz; FFT Length= 2048, Sampl

Appendix®26Appendix D386Microphone InputConnector: Female XLR Pin 2 HotType: Electronically balanced/unbalancedImpedance: 330ΩMaximum Input Level: -9

®®8760 South Sandy Pkwy.Sandy, Utah 84070Phone: (801) 568-7660Fax: (801) 568-7662Int’l Fax: (603) 672-4246Questions or comments?E•mail us at: customer

Table of Contents386Introduction0.1 Defining the 386...i0.2 Service Contact Info...

INTROCUSTOMER SERVICE INFO386 DEFINEDWARRANTY INFO®INTRODUCTION386

Introduction®386 User Manuali386Congratulations on your purchase of the dbx 386 Dual Vacuum Tube Preamp with digital out-put capabilities. For over 25

®Introduction386386 User ManualIf you require technical support, contact dbx Customer Service. Be prepared to accuratelydescribe the problem. Know the

Introduction®386 User Manualiii386Install the 386 in your rack with the provided rack screws. It is essential that when the 386 is being mounted in a

GettingStarted®Getting StartedSection 1386