SP2400 – 3
Audio expansion connectors are provided on the
rear panel for connecting multiple SP2400s, with
shared audio via balanced busing. Each of the four
program input signals are internally balanced and
can be independently assigned to the balanced bus
with internal assignment switches. The
LOCAL/
REMOTE
switches on the rear panel are provided for
selecting either local or bus operation for each
input. The paging mic and paging control signal are
also carried over the expansion bus.
A wired remote control is available that can be
used to select input sources and adjust volume levels
for each zone. Each amplifier can be programmed
with a unique address, and two amplifiers with the
same address can be controlled by a single remote
when interconnected by means of the RS485 port.
The remote control fits into a double-gang electrical
box with a Decora
®
-style faceplate.
In addition, the RS485 port can interface with third-
party control systems, or a PC-compatible computer
loaded with the SPLinker software application for
computer control of up to 32 zones in a system.
An internal option slot is provided on each of the
two channels for installing an optional DSP card (SP-
DSP). It provides additional ambient noise sensing
for the Program Inputs using the optional ambient
microphone. As the noise level in the room increases,
the gain on the selected source gradually increases
to keep the music audible above the background noise.
An RS232 port (
COMM PORT
) is provided on the
front panel for connecting a Palm™ Handheld or
PC-compatible laptop computer for configuring the
optional DSP card.
KEY FEATURES
•
Two Channel Controller/Amplifier
•
4 Stereo, Line-Level Program Inputs
•
1 Page Mic Input
•
1 Local Mic Input per Channel
•
Digital Cross-Fade between Input Sources
•
200 Watts/Channel at 70V and 100V
•
200 Watts/Channel at 8 Ohms
•
Transformerless Amplifier Outputs
•
Ambient Noise Sensing for Page Mic
•
AGC for Music Sources
•
3-Band Sweepable EQ for Music Sources
•
2-Band EQ on each Mic Input
•
Dual-Zone or Stereo Operation
•
Each Zone Addressable (0-31)
•
REMOTE connection for optional Remote Control
•
RS485 Port for Third-Party Control Systems
Part No. 0000117 Rev. A 08/01
© 2001 All Rights Reserved. Mackie Industrial. Printed in U.S.A.
2.
INTRODUCTION
The SP2400 is a microprocessor-based dual-
channel music controller with two built-in power
amplifiers designed for use in a variety of installations
requiring high performance, flexible features, and
ease of use, such as retail stores, restaurants, bars,
and theme venues. It provides two outputs that can
be used for either stereo operation or two-zone
coverage. Four stereo line-level inputs are provided
on the rear panel, along with a paging mic input and
two local mic/line inputs.
The program input sources can be independently
assigned to each zone with the Input Select
switches on the front panel. The boxes under the
Input Select buttons on the front panel are sized to
accept Brother P-Touch
®
labels. Each of the four
inputs has an integral AGC circuit to automatically
compensate for level differences between the input
sources. Input 1 has a buffered line-level output that
may be used for music-on-hold or other external
applications. Program Priority can be assigned to
Input 4 for use with a jukebox or alternative paging
configurations. When a signal is detected at Input 4,
it overrides any other program source assigned to
that channel or zone.
Each of the four input sources can be operated
in either stereo or mono mode. Each zone has a 3-
band EQ with sweepable mid for tuning the four
program sources.
Each mic input has a 40 dB gain switch for use
with either mic or line-level signals as well as a
variable gain trim, phantom power switch, and a two-
band EQ.
In addition, each zone has a variable
VOX
control
for adjusting the trigger threshold of the paging mic's
ducking circuit. The paging mic operates in both
zones when voice-activated, but can be assigned to
operate in either Zone A or Zone B, or over the entire
system when manually operated with a switch
connected to the
PAGING MIC CONTROL
connector.
Each zone is equipped with an input for an
optional ambient microphone that can sample the
ambient noise level in the room. The microprocessor
then adjusts the paging mic gain in each zone to
compensate for increased or decreased noise levels
so that the paging mic is always audible above the
background noise.
The Master Volume Up/Down buttons adjust the
overall level that is routed to the
PRE OUT
connector (and the
AMP IN
connector when the
jumper is installed). Internal jumpers are provided
for configuring the amplifier outputs for 70V, 100V,
or 8-ohm operation.
