MACKIE SP1200 - Manual (Page 10)

SP1200 – 10
Applications
A: Typical Mono Application
This diagram depicts a typical setup, using the
SP1200 in a mono application. A Digital Satellite
Service (DSS) is connected to Input 1, which also
serves as the music-on-hold for the telephone
system. A CD player and cassette deck are con-
nected to Inputs 2 and 3 for general purpose music
playback. A jukebox is connected to Input 4, which is
configured for priority playback via AMP ADDRESS
switch #7.
An ambient mic is connected to provide paging
level compensation for varying ambient noise levels
in the room. This amplifier has been configured for
8-ohm operation.
B: Multiple SP1200s: Multiple Zones
In this example, two SP1200s are used in a
system with two separate zones configured for 70V
operation (default configuration for U.S. versions).
Four program sources are connected to Unit 1. Of
these, only the DSS and Jukebox signals are shared
with Unit 2 by means of the Expansion Bus. Inputs
1 and 4 are assigned to the Expansion Bus via the
internal Bus Assign switches. Both units have sources
connected to Inputs 2 and 3 that are exclusive and
not shared between units. Each unit/zone has a
different AMP ADDRESS assigned, and each
remote control exclusively operates its own zone.
The Paging Mic can be manually operated with
the Paging Mic Control Switch, and the Paging Mic
and ALL CALL control signal is transferred to Unit 2
via the Expansion bus.
Each ambient mic and local mic operates
independently in its own zones.
C: Multiple SP1200s, Multiple Zones:
Expansion with Local Mic
This example shows how to share the Local Mic/
Line input with another zone, along with the remote
Expansion Bus signals.
Zone A and Zone B are assigned the same AMP
ADDRESS, with Zone A assigned Master status and
Zone B assigned Slave status via AMP ADDRESS
switch #6. This allows the front panel buttons for
both zones, and all the remote controls, to operate
both zones simultaneously.
When an input is selected, it is heard in both
zones because Zone A is set to LOCAL input
source, and Zone B is set to REMOTE input source
over the Expansion Bus. When OFF is pressed, the
Local Mic connected to Zone A is heard in both
zones because the PRE OUT from Zone A is
connected to the MIC/LINE input on Zone B.
D: Multiple SP1200s, Multiple Zones:
Room Combining—Zones
In this example, a dividing wall can be extended
to divide the room into two. The Mackie Industrial
DX8 is used to route independent source selections
to each zone (Preset 1 on the Remote Controls), or
common input source selections for both zones
(Preset 2 on the Remote Controls).
For example, Preset 1 might route the CD Player
and the Zone A microphone to Zone A, and the
Cassette Player and the Zone B microphone to
Zone B, to be used when the divider is in place
between the two zones. Preset 2 might route both
microphones and the audio signal from the laptop
to both Zones A and B, to be used when the divider
is removed between the two zones.
Both zones are assigned the same AMP
ADDRESS, so when “OFF” is selected on either
SP1200, the DX8 signal at the Mic/Line Input is
routed to both SP1200 outputs. The local input
sources (Tuner and CD 5-Disc Changer) or the
Global Background Music via the Expansion I/O
can be routed to the SP1200 outputs by selecting
1 (global remote), 2 (tuner), or 4 (CD) on the
SP1200 front panel.
Tips on Installing and Using the
SP1200—Plan Ahead!
The key to any successful installation is
planning your system well in advance. Know which
components are going to be used in the system,
their locations, and how they will interface with
each other. Plan the wire routing and AC power
requirements.
Here are some steps to follow to help insure a
smooth installation of the SP1200:
1. How many zones require coverage in the
system? This will determine how many SP1200s
you need in the system.
2. How many program sources are going to be
used? If the number of program sources is four or
less, they can be centralized at one SP1200 and
distributed via the Expansion Bus. If there are more
than four program sources, they must be
distributed among the SP1200s. Determine the
number and location of the program sources that
are going to be used.
Determine which program sources are going to
be used for each zone, and set the LOCAL/REMOTE
and internal BUS ASSIGN switches appropriately.