MACKIE DX8 - Manual (Page 3)

DX8 – 3
Part No. 910-138-30 Rev. B 01/01
© 2001 All Rights Reserved. Mackie Industrial. Printed in U.S.A.
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. In its base configuration the DX8
includes powerful signal processing software to
complement the 8x2 mixing structure. Optional
software and hardware is available to further
expand the DX8’s capabilities, allowing it to meet
the needs of more sophisticated applications.
Each of the eight input channels is terminated
to two Phoenix-type detachable connectors, each
optimized to accept either microphone or line-
level signals. Microphone preamplifiers utilize
Mackie’s proprietary XDR™ technology to offer
studio-class audio performance. Phantom power
of 48V DC 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 processing (pre-fader), while output meters
indicate actual level at the output (post-fader).
Levels are set by means of UP/DOWN pushbut-
tons 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, control system, or compatible PDA.
A multi-pin (DB25F) connector on the rear panel
allows interface between the 10 Logic Inputs and
10 Logic Outputs 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 DX8 wired remotes over a variety of
three-conductor cable. Remotes are available in
Volume Control (DX-RVC) 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 Stereo and
Mono mixer views, as well as access to the two
1/3-octave equalizers, two 5-band parametric
equalizers and two compressors dedicated to the
two master outputs. In addition, it allows configu-
ration 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 as
well as stored to the computer’s local drive,
simplifying future service calls and support.
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 24V DC input is provided for
applications where backup battery 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 bus
• 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
• 2-band sweepable shelving EQ on each Input and Output
• 31-band Graphic EQ on each Output
• 5-band Parametric EQ on each Output
• One fully variable Compressor on each Output
• 10 Programmable Logic Inputs
• 10 Programmable Logic Outputs
• 2 independent RS-232 interface ports
• 48V DC Phantom Power switch per input
• 24V DC Backup Power input
• Hardware Expansion Port accepts optional modules
• PC Software application included