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SP1200 – 3
Audio expansion connectors are provided on the
rear panel for connecting multiple SP1200s, 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 the zone. The 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 for installing an
optional DSP card (SP-DSP1). 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
• Single Channel Controller/Amplifier
• 4 Stereo, Line-Level Program Inputs
• 1 Page Mic Input
• 1 Local Mic Input
• Digital Cross-Fade between Input Sources
• 200 Watts at 70V and 100V
• 200 Watts at 8 Ohms
• Transformerless Amplifier Output
• Ambient Noise Sensing for Page Mic
• AGC for Music Sources
• 3-Band Sweepable EQ for Music Sources
• 2-Band EQ on each Mic Input
• Multiple-Zone or Mono Operation
• Each Zone Addressable (0-31)
• REMOTE connection for optional Remote Control
• RS485 Port for Third-Party Control Systems
2. Introduction
The SP1200 is a single-channel version of our
popular SP2400 dual-channel microprocessor-based
music controller. Having a single 200 watt power
amplifier, it's designed for use in a variety of
installations requiring high performance, flexible
features, and ease of use. Examples of such
installations are retail stores, restaurants, bars, and
theme venues. The SP1200 provides one output
that can be used for single-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 the zone with the Input Select buttons
on the front panel. The boxes under the Input
Select buttons 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 with priority
activated, it overrides any other program source
assigned to that channel or zone.
Each of the four input sources can be either
stereo or mono, although output from the SP1200
is a combined mono signal of both left and right
inputs. The zone has a 3-band program 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, the zone has a variable
VOX
control
for adjusting the trigger threshold of the paging mic's
ducking circuit. The paging mic operates in the zone
when voice-activated. However, it can be assigned
to operate over the entire system when manually
operated with a switch connected to the
PAGING
MIC CONTROL
connector.
The 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 the zone to
compensate for increased or decreased noise
levels. This way 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.
Part No. 0001207 Rev. A 1/02
© 2002 All Rights Reserved. Mackie Industrial. Printed in U.S.A.