Mackie Sound Palette SP2400 Instruction Manual Download

Page: 4 / 28

SP2400 – 4

FRONT PANEL FEATURES

INPUTS

select buttons are used to choose the

program source for its respective zone. Only one
source may be selected at a time. These are non-
priority inputs. However, Input 4 can become a
Program Priority Input by setting the

AMP

ADDRESS

switch #7 UP. In this mode, when a

signal is present on Input 4, it automatically
overrides whatever input source is selected for that
zone. This is useful for jukeboxes or alternative
paging configurations.

INPUT OFF

deselects Inputs 1-4 and activates

the

MIC/LINE INPUT

MASTER VOLUME

is used to adjust the overall

volume level for Inputs 1-4.

When

OFF

is selected, the Up/Down

MASTER

VOLUME

buttons adjust the output level for the

MIC/LINE INPUT

. The Master Volume setting for

Inputs 1-4 is retained in memory, and is recalled
when a program source is selected.

The

Meter

indicates the level at the

PRE OUT

jack. Normally, it operates as a peak program meter
(PPM). When adjusting the

MASTER VOLUME

level, the meter changes from level indication to
level setting indication. After five seconds, the
meters switch back to normal peak program
metering.

There are three

STATUS

indicators. The

OVERLOAD

LEDs indicate when one of the

amplifiers is beginning to current limit. The

LED indicates when the SP2400 is operating.

The

COMM PORT

is used to connect to the

optional DSP card with a Palm™ Handheld or PC-
compatible laptop computer for configuration.

Turning the

POWER

switch on activates the soft-

start circuit in the power supply. The soft-start
circuit impedes in-rush current from the AC supply.

REAR PANEL FEATURES

PROGRAM INPUTS 1-4

are stereo RCA

unbalanced inputs that accept line-level signals. The

LOCAL/REMOTE

switches on the rear panel select

either the local program input signal connected here
or the program signal on the expansion bus. See
"Expansion In/Out" on page 18 for more information.

DIRECT OUTPUT

is a buffered line-level output

providing the stereo signal from the program source
connected to

INPUT 1

. Signal is always present at

the

DIRECT OUTPUT

, regardless of whether

INPUT 1

is selected as the source. This is useful for music-
on-hold and other external applications.

PAGING MIC

is the connection for the paging

microphone. There are two connectors available: a
3-pin XLR and a 3-pin Phoenix-type connector. In
both cases, pin 1 is ground, pin 2 is signal high (+),
and pin 3 is signal low (–).

CONTROL

is a Phoenix-type connector for

connecting external normally-open switches for
remote paging. Three options are available: page to
Zone A, page to Zone B, and page to the entire
system (

ALL CALL

). Connect the switches between

GROUND

and the option of choice.

PHANTOM

applies phantom power (+24VDC) to

pins 2 and 3 of the microphone input. Move both
switches to the down position to turn on phantom
power.

The

GAIN +40 dB

DIP switch is used to set the

gain for use with either a mic-level or a line-level
signal. Move both switches to the down position for
mic-level signals, and up for line-level signals.

The

GAIN

variable control is used to trim the mic

preamp gain for the best signal-to-noise ratio.

The

LOW

variable control is a shelving filter that

provides 12 dB of boost and cut below 100Hz.

The

HIGH

variable control is a shelving filter that

provides 12 dB of boost and cut above 12kHz.

The

PAGING MIC VOX

variable control adjusts

the ducking threshold for the paging mic. Rotate the
control clockwise to reduce the threshold. Rotate the
control counterclockwise to increase the threshold.

SP2400 MUSIC CONTROLLER