Mackie SP2400 Instruction Manual
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Mackie SP2400 Instruction Manual

Mackie SP2400 Instruction Manual

Music controller
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AC Power Considerations
Each SP2400 draws an average of 6 amps of AC
line current (@ 120VAC) when fully loaded and
playing music with a relatively high crest factor.
Voltage Conversion
The SP2400 can be configured to operate at
115V AC or 230V AC. See Appendix C for instructions
on how to change the operating voltage configuration.
Thermal Considerations
IMPORTANT: The SP2400 is convection
cooled rather than fan cooled. This design
was chosen to avoid the requirement for
periodic air filter maintenance, and to keep the
insides of the SP2400 clean in dirty environments
(rather than blowing dirty, smoky air into it). Heat is
drawn away from the amplifiers by the heatsinks
and radiated through the cooling vents in the top
cover. When installing the SP2400, be sure to allow
sufficient air space around the top and rear of the
amplifier to allow adequate cooling for the
heatsinks. If installing in a rack, leave at least one
rack space above and below the SP2400 for a vent,
and at least 6 inches behind the chassis to allow
proper ventilation.
2U Exhaust Fan Panel
1U Vent Panel
1U Vent Panel
2U Vent Panel
(or Optional Intake Fan)
If installing three or more SP2400s in a rack, use a
fan in the rack to move cool air in and warm air out of
the rack's enclosure. It may be necessary to provide
a cool air intake fan at the bottom of the rack, and a
warm air exhaust fan at the top (see Figure below).
Note: Though it is not required, it is
recommended that a warm air exhaust fan be used
when two SP2400s are installed in the same rack.
If the amplifier should overheat, a thermal switch
is activated that disengages the speaker outputs,
allowing the heatsinks to cool down. The
OVERLOAD indicator on the front panel will also
light to show that a protection circuit has been
activated. Once the amplifier has cooled to a safe
operating temperature, the thermal switch resets
and reactivates the speaker outputs. If this should
occur, identify the cause of the problem and take
corrective action (i.e., provide better ventilation,
install a fan in the rack to move more air, make sure
the amplifier is not overloaded with too low of a
load impedance).
SP2400 – 15

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Summary of Contents for Mackie SP2400

  • Page 1 It may be necessary to provide Each SP2400 draws an average of 6 amps of AC a cool air intake fan at the bottom of the rack, and a line current (@ 120VAC) when fully loaded and warm air exhaust fan at the top (see Figure below).

  • Page 2: Operation

    AMP ADDRESS switch #7 UP to enable INPUT 4 priority. • If you’re using the SP2400 in a stereo configuration, Set the 3-band EQ controls to the “U” position move the STEREO/MONO switches up. If you have for now (1K for the FREQ control). These can be a zone configuration planned, leave the STEREO/ adjusted later, if necessary.
  • Page 3 REMOTE Local Mic/Line Inputs You can connect one or more optional remote controls (up to 10) to each zone on the SP2400 to Connect a microphone to MIC/LINE INPUT A or B provide wall-mounted input select, program signal (one for each zone), using the supplied Phoenix-type connector, to use for a meeting room or other local volume control, and local mic volume control.

  • Page 4: Local Or Remote

    Input 1 to the up setting AMP ADDRESS switch #7 UP. When a position on the first SP2400. The music is then signal appears at Input 4, it overrides the other available to Input 1 on all the SP2400s connected three inputs.
  • Page 5 When the controls are set to “U” (unity), the there is no timeout period after the announcement EQ has no effect on the signal. ends. The moment you let go of the switch, the music begins to ramp up to its original volume. SP2400 – 19...
  • Page 6 The ambient mic provides an “ear” for the micro- #8 up). processor to gauge the ambient noise in the room and 6. Turn off the SP2400, then turn it back on again while adjust the gain of the paging mic accordingly. When pressing and holding the “3” button.

  • Page 7: Left And Right Outputs

    In addition, the SP2400 provides a method for Direct Speaker Connection controlling two independent zones using a single If the SP2400 is not being used in a distributed Remote Control by assigning them to the same speaker system, you can reconfigure the amplifiers AMP ADDRESS (see next section).
  • Page 8 AMP ADDRESS switch, turn computer. Use the serial port on the computer to the SP2400 off for five seconds, then turn it back connect to internal connectors on the SP2400's on again for the new settings to take effect.

  • Page 9: Specifications

    5. Specifications SP2400 Block Diagram ASSIGN TO EXPANSION I/O — LOCAL/REMOTE DIRECT FROM DIGITALLY OUTPUT EXPANSION CONTROLLED — ATTENUATORS — — STEREO/ INPUT 1 MONO TO ZONE B LOCAL/REMOTE FROM EXPANSION — — — — TO EXPANSION I/O ASSIGN —...
  • Page 10 –52 dBu to +4 dBu Local Mic Input: –52 dBu to +4 dBu Maximum Input Program Inputs: +15 dBu Mic Inputs: +15 dBu Maximum Output at Pre Out +10 dBu Stereo Separation > 45 dB at 1kHz SP2400 – 24...

  • Page 11: Appendix A: Default Settings

    GAIN +40dB UP (0dB) UP (0dB) MIC VOX DOWN (OFF) DOWN (OFF) In the event that your SP2400 should require servicing, please follow these instructions: PROGRAM EQ CENTER (FLAT) CENTER (FLAT) 1. Call Mackie Industrial Tech Support at 1-888-337- CENTER (FLAT)

  • Page 12: Appendix B: Button Modes

    SP2400 Button Modes Press 1 on Power Up: AGC Reset • Press and hold the Input 1 button while powering up the SP2400. • Release the Input 1 button and the Input 1 LED blinks. This resets the AGC for all four inputs to the default setting (–5 dBu).

  • Page 13: Appendix C: Voltage Conversion

    Refer all servicing to qualified service personnel. Make sure the power is off and the power cord disconnected before removing the top cover to gain access to the inside of the SP2400. SP2400 – 27...
  • Page 14 SP2400 Music Controller Mackie Industrial 16220 Wood-Red Rd. NE • Woodinville, WA 98072 • USA 888/337-7404 • Outside the U.S.: 425/487-4333 Fax: 425/487-4337 • www.mackieindustrial.com...

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