User Manual
Tube Preamp
Dual Vacuum
w/Digital Out
CLEAN ONLY WITH A DAMP CLOTH
IMPORTANT SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
WIRE COLOR
ADVARSEL
LITHIUM BATTERY
ELECTROMAGNETIC COMPATIBILITY
U.K. MAINS PLUG WARNING
Section 1 - Getting Started
Table of Contents
Table of Contents 386 User Manual
Introduction
CUSTOMER SERVICE INFO
386 DEFINED
INTRODUCTION
WARRANTY INFO
75 Hz low cut filter Phase reverse
Introduction
0.1 Defining the
Selectable mic/line switch 48 volt phantom power 20 dB pad
Introduction
0.2 Service Contact Info
0.3 Warranty
If 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
386 User Manual
0.4 Installation Recommendations
Install 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
Introduction
Getting Started
Section
Getting
Started
S/PDIF Digital Connector
Power Switch
IEC Power Cord Receptacle
AES/EBU Digital Connector
Phase Switch
Line Select Switch
+48 Volt Switch
20db Pad Switch
Sample Rate Switch
Meter Select Switch
Dither Switch
Shape Switch
Section
APPLICATIONS
ANALOG APPLICATIONS
ANALOG
Section
Analog Applications
2.1 Basic Analog Connection of the
2.2 Connection to a Mixing Console
1. Make microphone connections, being careful to keep the DRIVE control in the minimum +30 dB position
2.3 Direct Connection to a Recorder
Section
Analog Applications
Page
APPLICATIONS
DIGITAL APPLICATIONS
DIGITAL
Section
Shape Switch
Digital Applications 3.1 Digital Output Front Functions of the
3.2 Digital Output Rear Panel Connections
Dither Switch
S/PDIF Digital Connector
Digital Applications
3.3 Sync Input Sample Rate Selection
AES/EBU Digital Connector
Section
Front Panel Digital Output Features
3.4 Direct Connection to a DAW CPU
Rear Panel Connections
Digital Applications
Section
Direct Connection to a Digital Mixer
Front Panel Digital Output Features
Rear Panel Connections
Digital Applications 3.6 A/D Conversion
Front Panel Digital Output Features
Section
Digital Applications
Multi-Tracking to Digital
Front Panel Digital Output Features
Section
Rear Panel Connections
Digital Applications 3.8 Analog and Digital Output Application
Front Panel Digital Output Features
Section
APPENDIX
APPENDIX
Specifications
Sync Input Info Block Diagram
386 User Manual
Appendix A
Sync Input Info
Sync Input Info
386 User Manual
Diagram Appendix B
Block Diagram
Block
by Roger Johnson
Appendix C
dbx Type IV Conversion System White Paper
Type IV White Paper
386 User Manual
Appendix C
Type IV White Paper
386 User Manual
Appendix C
Type IV White Paper
Type IV White Paper
Figure 3a - Signal Having Low and High Frequency Content
Figure 3b - Signal of Fig. 3a Going Beyond the A/D Clip Level
Appendix C
Type IV White Paper
High-Frequency Information Completely Lost High-Frequency Content
A/D Clip Level Low-Frequency Content
Appendix C
D.1 Noise-Shaping Algorithms
Appendix D
Appendix
D.2 Truncation
Appendix
D.3 Specifications
Appendix D
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A Harman International Company
A Harman International Company