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dbx Pro 386 user manual Appendix D, D.3 Specifications

Models: 386

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Appendix D

Appendix D			Appendix			386




	D.3 Specifications
Microphone Input
Connector:					Female XLR Pin 2 Hot
Type:					Electronically balanced/unbalanced
Impedance:					330Ω
Maximum Input Level:					-9 dBu or +11 dBu with 20 dB pad engaged
CMRR:					>40dB, Typically 55dB
Equivalent Input Noise:					Typically -120 dBu with a 150Ω source load, 20Hz to 20kHz BW
Line Input (Rear Panel)
Connector:					TRS 1/4" Jack
Type:					Electronically balanced/unbalanced
Impedance:					20kΩ unbalanced, 40kΩ balanced
Maximum Input Level:					+21dBu balanced or unbalanced
CMRR:					>40dB, Typically 55dB
Gain (Drive Control)					-15dB to +15dB
Instrument Input (Front Panel)
Connector:					TS 1/4" Jack
Type:					Unbalanced
Impedance:					470 kΩ
Maximum Input Level:					+21dBu unbalanced
Analog Outputs
Connector:					Male XLR Pin 2 Hot and TRS 1/4"
Type:					Servo-balanced/unbalanced
Impedance:					Balanced 120Ω , unbalanced 60Ω
Maximum Output Level:					>+21 dBu, >+20 dBm (into a 600Ω load)
Insert
Connector:					TRS 1/4"
Type:					Unbalanced
Impedance:					100Ω	(SEND), 20kΩ (RETURN)
Digital Outputs
Connectors:					XLR for AES/EBU
					RCA for S/PDIF
Impedance:					110Ω	for AES/EBU
					75Ω	for S/PDIF
Word Sync Input/Output
Connectors:					BNC
Input Impedance:					75Ω terminated by internal jumper
Input:					96, 88.2, 48, or 44.1kHz word clock
Output:					96, 88.2, 48, or 44.1kHz word clock
System Performance
DRIVE Control Range:					+30dB to +60dB for Mic Input
LEVEL Control Range					-15dB to +15dB for Line and Instrument Inputs

(Analog and Digital):					-15dB to +15dB
LINE:					Selects between microphone and line inputs
Phantom Power:					+48V
PAD:					20dB pad
PHASE:					Reverses pins 2 and 3 of the microphone input XLR
LOW CUT:					75Hz, 12dB/octave high pass filter
Analog Frequency Response:						<10Hz to 75kHz
THD+Noise:					0.35% typical at +4dBu out, 1kHz, 40 dB gain
Interchannel Crosstalk:					Typically –80dB, 20Hz to 20kHz
Analog to Digital Conversion
Type:					dbx Type IV™ A/D Conversion System
Sample Rate:					96, 88.2, 48, or 44.1kHz selectable
Wordlength:					24, 20, or 16 bit selectable
Dither Type:					TPDF, SNR2, or none
Noise Shape:					Shape 1, Shape 2, or none
Output Format:					S/PDIF or AES/EBU
Convertor Dynamic Range					107dB typical, A-weighted, 22kHz bandwidth
Power Supply
Operating Voltage:					DO: 120VAC 60Hz, 100VAC 50/60Hz
Power Requirements:					EU: 230VAC 50/60 Hz
					35 Watts
Physical
Weight:					7.3 lbs (3.3kg)
Dimensions:					1.75'' x 7.75'' x 19'' (4.5cm x 19.7cm x 48.5cm)

NOTE: 0dBu= -18dBFS, 0dBu = 0.775V rms

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26	386 User Manual

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dbx Pro 386 user manual Appendix D, D.3 Specifications

Contents

w/Digital Out Tube PreampDual Vacuum User ManualWIRE COLOR IMPORTANT SAFETY INSTRUCTIONSSAFETY INSTRUCTIONS CLEAN ONLY WITH A DAMP CLOTHU.K. MAINS PLUG WARNING LITHIUM BATTERYELECTROMAGNETIC COMPATIBILITY ADVARSELIntroduction Table of ContentsTable of Contents 386 User Manual Section 1 - Getting StartedWARRANTY INFO 386 DEFINEDINTRODUCTION CUSTOMER SERVICE INFOSelectable mic/line switch 48 volt phantom power 20 dB pad Introduction0.1 Defining the 75 Hz low cut filter Phase reverseIf you require technical support, contact dbx Customer Service. Be prepared to accurately describe the problem. Know the serial number of your unit - this is printed on a sticker attached to the rear panel. If you have not already taken the time to fill out your warranty registration card and send it in, please do so now 0.2 Service Contact Info0.3 Warranty IntroductionIntroduction 0.4 Installation RecommendationsInstall the 386 in your rack with the provided rack screws. It is essential that when the 386 is being mounted in a rack mounting enclosure, the unit should be positioned with enough room at least one centimeter at the top and one centimeter at the bottom of the unit to allow prop- er ventilation. The 386 should not be mounted above or below anything that generates exces- sive heat. Ambient temperatures should not exceed 1130F 450C when equipment is in use. Although the unit is shielded against radio frequency and electromagnetic interference, extreme- ly high fields of RF and EMI should be avoided where possible 386 User ManualStarted SectionGetting Getting StartedAES/EBU Digital Connector Power SwitchIEC Power Cord Receptacle S/PDIF Digital Connector20db Pad Switch Line Select Switch+48 Volt Switch Phase SwitchShape Switch Meter Select SwitchDither Switch Sample Rate SwitchANALOG APPLICATIONSANALOG APPLICATIONS Section2.2 Connection to a Mixing Console Analog Applications2.1 Basic Analog Connection of the SectionAnalog Applications 2.3 Direct Connection to a RecorderSection 1. Make microphone connections, being careful to keep the DRIVE control in the minimum +30 dB positionPage Section DIGITAL APPLICATIONSDIGITAL APPLICATIONSDither Switch Digital Applications 3.1 Digital Output Front Functions of the3.2 Digital Output Rear Panel Connections Shape SwitchAES/EBU Digital Connector Digital Applications3.3 Sync Input Sample Rate Selection S/PDIF Digital ConnectorRear Panel Connections Front Panel Digital Output Features3.4 Direct Connection to a DAW CPU SectionFront Panel Digital Output Features SectionDirect Connection to a Digital Mixer Digital ApplicationsSection Digital Applications 3.6 A/D ConversionFront Panel Digital Output Features Rear Panel ConnectionsSection Multi-Tracking to DigitalFront Panel Digital Output Features Digital ApplicationsSection Digital Applications 3.8 Analog and Digital Output ApplicationFront Panel Digital Output Features Rear Panel ConnectionsSync Input Info Block Diagram APPENDIXSpecifications APPENDIXSync Input Info Appendix ASync Input Info 386 User ManualBlock Diagram Appendix BBlock Diagram 386 User ManualType IV White Paper Appendix Cdbx Type IV Conversion System White Paper by Roger JohnsonType IV White Paper Appendix C386 User Manual Type IV White Paper Appendix C386 User Manual Appendix C Figure 3a - Signal Having Low and High Frequency ContentFigure 3b - Signal of Fig. 3a Going Beyond the A/D Clip Level Type IV White PaperAppendix C High-Frequency Information Completely Lost High-Frequency ContentA/D Clip Level Low-Frequency Content Type IV White PaperD.2 Truncation Appendix DAppendix D.1 Noise-Shaping AlgorithmsAppendix D D.3 SpecificationsAppendix A Harman International Company Questions or comments? Email us at customer@dbxpro.comor visit our World Wide Web home page at 8760 South Sandy Pkwy Sandy, Utah Phone 801 Fax 801 Int’l Fax 603