SP2400 – 17
Paging Mic Control
The
PAGING MIC CONTROL
connector is
provided to connect a manual paging switch.
Connect a normally-open switch between
GND
and
ZONE A
(to page in Zone A only),
GND
and
ZONE B
(to page in Zone B only), or
GND
and
ALL CALL
(to page over the entire system). The voice-
activated (
VOX
) control for the Paging Mic still
operates in both zones when the switch is off.
Local Mic/Line Inputs
Connect a microphone to
MIC/LINE INPUT A or B
(one for each zone), using the supplied Phoenix-type
connector, to use for a meeting room or other local
speaking requirements. Set the
PHANTOM
and
GAIN +40dB
switches to their appropriate positions.
Select the
OFF
button on the front panel. This
disengages the selected Program Source and
engages the
MIC/LINE INPUT
. Adjust the
MASTER
VOLUME
up/down buttons so the meter level is at
the “
0
” mark.
Note:
The
MASTER VOLUME
setting for the
MIC/LINE INPUTS
is independent of the
MASTER
VOLUME
setting for
INPUTS 1-4
. The
MASTER
VOLUME
setting for
INPUTS 1-4
is stored in
memory when the
MIC/LINE INPUT
is selected (the
OFF
button is engaged). When an
INPUT 1-4
is
selected, the
MASTER VOLUME
setting for the
MIC/LINE INPUT
is stored in memory.
Set the
GAIN
control so the meter indication is
near the “
0
” mark when speaking at an average
level into the microphone.
Set the 2-band EQ (
LOW
and
HIGH
) to the “
U
“
position. These can be adjusted later, if necessary.
Ambient Mic Inputs
This is an optional connection, but can greatly
enhance the performance of the Paging Mic.
Connect the optional MT-3100 mic to the
AMBIENT
MIC
input (one for each zone). This provides an
“ear” for the microprocessor to adjust the Paging
Mic gain to compensate for the ambient noise level
in the room. Use the supplied Phoenix-type
connectors to make these connections.
Note:
Move the
AMP ADDRESS
switch #8 UP to
enable the ambient mic. See page 20 for more
information on "Using the Ambient Mic."
Expansion In/Out
If you are connecting two or more SP2400s in a
system, use the
EXPANSION IN/OUT
connections
to distribute the Program Input sources assigned to
the Expansion Bus between SP2400s. The two 25-
pin D-Sub connectors are in parallel (use one to
connect to the previous SP2400 and one to connect
to the next SP2400 in the chain).
REMOTE
You can connect one or more optional remote
controls (up to 10) to each zone on the SP2400 to
provide wall-mounted input select, program signal
volume control, and local mic volume control.
RS485
A PC can be connected to the RS485 port to
provide computer control for up to 16 SP2400s,
interconnected via their RS485 ports, using the
SPLinker Sound Palette Control software application.
If the PC doesn't have an RS485 serial port, you can
either install an RS485 interface card, or use an
RS232 serial port with an RS232-to-RS485 converter.
Two zones can be controlled with one wired
remote control by connecting the RS485 ports
between the two zones. (The RS485 ports are
connected internally, so an external connection
between the RS485 ports on a single SP2400 is not
necessary.) Each amplifier must have the same
AMP ADDRESS
as the amp to which the remote
control is connected, with one assigned as Master
and the other as Slave. Use the supplied Phoenix-
type connectors to make these connections.
Note:
Move the
AMP ADDRESS
switch #6
DOWN for Master and UP for Slave.
PRE OUT/AMP IN
These connections can be used to insert a signal
processor (i.e., graphic equalizer, compressor, etc.)
into the signal chain, or to feed the signal to additional
power amplifiers. If no external processor or external
amplifier is to be used, leave the U-shaped jumper in
place between the
PRE OUT
and
AMP IN
connectors.
OUTPUTS
Use the supplied two-conductor Phoenix-type
connectors with appropriate speaker wiring to
connect to the speaker or distributed speaker
system.
