Mackie SP2400 quick start Front Panel Features, Rear Panel Features

Front Panel Features

INPUTS are used to choose the program source for its respective zone. Only one source may be selected at a time.

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, and for the MIC/LINE INPUT.

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 to a level-setting meter and indicates the relative gain setting. It reverts back to PPM operation after a few seconds.

There are three STATUS indicators. The OVERLOAD LED indicates when one of the amplifiers is beginning to current limit. The ON LED indicates when the SP2400 is operating.

Use the COMM PORT to configure the optional DSP card.

Use the POWER switch to turn the SP2400 on and off.

DIRECT OUTPUT is a buffered line-level output providing the stereo signal from the program source connected to INPUT 1.

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 both Zones (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.

The GAIN +40 dB DIP switch is used to set the gain for use with either a mic-level (+40 dB position) or a line-level signal.

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.

The MIC/LINE INPUT is provided to connect a local microphone in each zone. This is a 3-pin Phoenix-type connector where pin 1 is ground, pin 2 is signal high (+), and pin 3 is signal low (–).

AMBIENT MIC is a 3-pin Phoenix-type connector used to connect the optional MT-3100 ambient microphone, one for each zone.

EQ is a 3-band equalizer with a sweepable midrange that only affects Inputs 1-4. LOW is a shelving filter that provides 15 dB of boost and cut below 80Hz. MID is a peaking filter that provides 15 dB of boost and cut at the selected frequency between

250Hz and 8kHz. HIGH is a shelving filter that provides 15 dB of boost and cut above 12kHz.

AMP ADDRESS is used to assign a unique address to each amplifier, as well as to enable or disable features. Switches 1-5 provide 32 separate addresses, switch 6 determines Master/Slave status, switch 7 enables Input 4 Priority, and switch 8 enables the optional ambient mic.

ZONE MASTER/SLAVE INPUT 4 PRIORITY OFF/ON AMBIENT MIC OFF/ON

I ON

01 2 3 4 5 6 7 8 OFF

AMP ADDRESS

RS485 is a 3-pin Phoenix-type connector that provides an interface for the SPLinker Sound Palette Control PC application software for centralized computer control for up to 32 zones. The RS485 bus is internally connected between the two amplifiers, so if both amplifiers are assigned the same zone with the AMP ADDRESS switches, the front panel controls and remote controls operate both sides.

Additionally, it allows interfacing to third- party control systems. Pin 1 is the non- inverting Input/Output, pin 2 is ground, and pin 3 is the inverting Input/Output.

Rear Panel Features

PROGRAM INPUTS are stereo RCA unbalanced inputs that accept line-level signals.

115V 60Hz FUSE 115/T8A 220 WATTS

230V 50Hz FUSE 230/T4A 220 WATTS