Document Outline

• The BOX Cover
• Table of Contents
• Important Safety Instructions
• 1.0 Overview
• 2.0 Input Channels 1-4
  • 2.1 Preamplifier
  • 2.2 Filter, Routing, and Meter
    • 2.2.1 High-Pass Filter
    • 2.2.2 Compressor Routing
    • 2.2.3 Insert
    • 2.2.4 Output Routing and Pan-Pot
    • 2.2.5 Meter and Meter Routing
  • 2.3 Fader, Mute, Solo, and Solo-Safe
  • 2.4 550A Equalizer – 500 Slot
    • 2.4.1 550A Discrete 3-Band Equalizer
    • 2.4.2 API 500 Series Slot
  • 2.5 Auxiliary/Cue Sends
    • 2.5.1 Mono Aux Sends 1/2
    • 2.5.2 Stereo Aux Send 3/4
    • 2.5.3 Stereo Cue Sends
    • 2.5.4 Aux Pre Jumper
  • 2.6 Input Channel Rear Panel Connections
    • 2.6.1 Input Channel Preamp Connections
    • 2.6.2 Input Channel Insert Connections
    • 2.6.3 Input Channel Direct and Preamp Output Connections
• 3.0 Summing Input Channels 1-16
  • 3.1 Input Routing
    • 3.1.1 Insert
    • 3.1.2 0dB (Unity Gain)
  • 3.2 Fader, Mute, Solo, and Solo-Safe
  • 3.3 Output Routing and Pan-Pot
  • 3.4 Auxiliary Sends
    • 3.4.1 Mono Aux Sends 1/2
    • 3.4.2 Stereo Aux Send 3/4
    • 3.4.3 Stereo Cue Sends
  • 3.5 Summing Input Rear Panel Connections
    • 3.5.1 Summing Input Line Input Connections
    • 3.5.2 Summing Input Insert Connections
• 4.0 Master Section
• 5.0 Stereo Program Master
  • 5.1 Program Sum Inputs
  • 5.2 Program Bus Compression
  • 5.3 Program Bus Inserts
  • 5.4 Program Master Fader
  • 5.5 Program Bus Outputs
  • 5.6 Program Bus Rear Panel Connections
    • 5.6.1 Program Sum Input Connections
    • 5.6.2 Program Bus Outputs
    • 5.6.3 Rear Panel Program Insert Connections
• 6.0 527 Compressors
  • 6.1 Input Channel Routing
  • 6.2 Program Bus Routing & Link
  • 6.3 Compressor Controls
    • 6.3.1 Compressor Routing Controls
    • 6.3.2 Compressor Configuration Controls
    • 6.3.3 Compressor Parameter Controls
    • 6.3.4 Gain Reduction Meter
• 7.0 Auxiliary Masters
  • 7.1 Auxiliary Master Controls
    • 7.1.1 Aux Master Solos
  • 7.2 Auxiliary Master Rear Panel Connections
• 8.0 Cue Master
  • 8.1 Cue Master Controls
    • 8.1.1 Cue Master Solo
  • 8.2 Cue Master Rear Panel Connections
• 9.0 Talkback
  • 9.1 Talkback Microphone and Trims
  • 9.2 Talkback Routing and Controls
• 10.0 Solo System
  • 10.1 Solo Modes
  • 10.2 Solo Master Controls
• 11.0 Monitoring Systems
  • 11.1 Control Room Source Selection
  • 11.2 Control Room Monitor Controls
  • 11.3 Headphone Amplifier
  • 11.4 Monitor System Rear Panel Connections
• 12.0 VU Meters
• 13.0 Rear Panel Connections
  • 13.1 Input Channels 1-4 Connections
  • 13.2 Summing Inputs 1-16 Connections
  • 13.3 Program Bus Connections
  • 13.4 Auxiliary & Cue Connections
  • 13.5 Control Room Monitor/Headphone Output Connections
  • 13.6 AC Power Connections
• 14.0 Application Guide
  • 14.1 Recording
    • 14.1.1 Input Channels While Recording
    • 14.1.2 Summing Inputs While Recording
    • 14.1.3 Using DAW Mixes While Recording
    • 14.1.4 Cue and Headphones
    • 14.1.5 Talkback
  • 14.2 Mixing
    • 14.2.1 Program Bus Compression
    • 14.2.2 Effects Sends and Returns
• APPENDIX
  • A.1 API Limited Warranty and Service Information
  • A.2 Block Diagram
  • A.3 DB-25 Pin-Out Diagrams
• API “The BOX”