2. INTRODUCTION
The DX8 is a DSP-based digital audio mixer and signal processor designed for use in a variety of installations such as churches, courtrooms, convention centers, and hotels. It provides eight universal inputs and two balanced outputs allowing true 8x2 mixing for stereo or dual-zone applications. The DX8 includes powerful signal processing software to complement the 8x2 mixing structure. Automixing capability allows the DX8 to be setup for applications where a human operator is not available.
Each of the eight input channels is terminated to two Phoenix-type detachable connectors. Each connector is optimized to accept either microphone or line-level signals. Microphone preamplifiers employ Mackie’s proprietary XDR™ technology to offer studio-class audio performance. Phantom power of 48 VDC is switchable individually on each input. Two auxiliary line-level inputs with trim are provided, allowing analog signals to be mixed with the A and B master mixes. Master outputs deliver balanced line-level signals to detachable Phoenix- type connectors as well as buffered unbalanced signals to RCA connectors intended for recording.
The DX8 offers an intuitive front panel user interface, consisting of dual-function LED bar graph meters for each input and output. Input meters indicate the presence of signal before signal pro- cessing (pre-fader), while output meters indicate actual level at the output (post-fader). Levels are set by means of UP/DOWN pushbuttons dedicated to each input and output. A MODE button is used to select between Mix A and B, allowing adjustment of levels to both mix outputs from the same set of input controls. A third function of the MODE button allows the user to LOCK the front panel controls until a security unlock code is entered.
The DX8 offers flexible interface options through dedicated inputs and outputs for control and programming purposes. Two independent RS232 connectors are provided, one on the front panel and one on the rear, for connection to a computer or control system. A multi-pin (DB25F) connector on the rear panel allows interface among the 10 Logic Inputs and 10 Logic Outputs. This interface connects to switches, LEDs, and other devices, enabling hardware control and indication from custom control panels. All logic inputs and outputs are fully programmable in software. A proprietary remote control bus allows connection of the optional wired remotes over three-conductor cable. Remotes are available in Volume Control (DX-RVC)
Part No. SW0065 Rev. A 05/03
© 2001-2003 Mackie Designs Inc. All Rights Reserved.
and 4-Switch (DX-SW4) versions and may be combined in any configuration.
The DX8 is supplied with PC software that allows access to all of the system’s settings and configurations. The software offers access to the Automixing controls, two 1/3-octave equalizers, two 5-band parametric equalizers, and two compressors dedicated to the two master outputs. In addition, it allows configuration and recall of up to 16 Presets, 8 input Priority Levels, 8 Mute Groups, and 8 Control Groups. Force ON and OFF functions are provided, with a selection of Relative or Absolute changes, which can be used with the Priority settings to create sophisticated audio management systems. All settings and text labels are retained in the DX8, and can be saved on the computer’s local drive.
The DX8 is UL and CE approved and designed for continuous use in professional fixed installation systems. An internal auto-ranging power supply allows connection to mains voltages from 90-240V AC at 50/60 Hz without requiring jumper or switch setting changes. A 24 VDC input is provided for applications where backup power is required. Switchover to backup power is automatic and silent.
KEY FEATURES
•32-bit DSP and 24-bit Analog/Digital Conversion
•8 balanced XDR™ Mic/Line inputs with trim
•2 balanced Line inputs direct to mix buses A and B
•2 Independent Mix Buses and balanced Outputs
•2 unbalanced Record Outputs
•8 unbalanced Direct Channel Outputs
•Individual Level/Peak (PPM) metering on each Input and Output
•3-band sweepable Hi/Lo shelving and mid-peaking EQ on each Input
•2-band sweepable shelving EQ on each Output
•31-band Graphic EQ on each Output
•5-band Parametric EQ on each Output
•One fully variable Compressor on each Output
•Independent Automixing function for each Output to maximize acoustic gain and prevent feedback
•10 Programmable Logic Inputs
•10 Programmable Logic Outputs
•2 independent RS-232 interface ports
•48 VDC Phantom Power switch per input
•24 VDC Backup Power input
•Hardware Expansion Port accepts optional modules
•PC Software application included
DX8 – 3
