Mackie SP-DSP1 Quick Start Guide
The SP-DSP1 is a
real-time digital
signal processor th at
U3
can be installed in
the SP1200 or
SP2400. It uses a
U1
U4
U5
proprietary algorithm
to sense noise in a
room and adjust the
U7
U6U2
gain of the program
source accordingly.
This unique approach effectively "nulls out"
the music sensed at the ambient microphone,
allowing the DSP to measure the actual
ambient noise level in the room. As the noise
level increases, the gain of the music
automatically increases to compensate for the
increased noise.
Safety First!
Before installing the SP-DSP card, please
read this Quick-Start Guide carefully and keep
it for future reference.
CAUTION! This circuit board is
static sensitive, and is packed in
an anti-static bag. Please use
anti-static precautions when
handling the SP-DSP card, such as the use of
an electrically grounded wrist band and antistatic mat.
WARNING! These servicing
instructions are for use b y
qualified personnel only. To
avoid electric shock, do not
perform any servicing other than that
contained in the Operating Instructions
U12U8
U9
U10
U13
U11
J1
EEPROM
U14
U16
U15
DSP
J2
+5V
+5V
GND
unless you are qualified to do so. 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.
Mackie Industrial strongly recommends that
this circuit board be installed only by a
professional technician, sound installer, or
contractor with electronic servicing experienc e.
1. Never open the SP1200/SP2400 with the
power supply on.
2. After installing the SP-DSP1 card, and before
applying power to the SP1200/SP2400,
make sure the cover is properly installed
and that no wires are pinched between the
cover and chassis.
J3
U17
U18
J4
L/R
+5V
TXD
RXD
GND
Installing the SP-DSP1 Card
Note: These instructions describe how to install one SP-D SP1 into the Zone A side of the SP2400.
A second SP-DSP1 may be installed in the Zone B side. The instructions for Zone B are the same
unless otherwise indicated.
SP-DSP1
U1
R262
R263
S5
R261
U3
U4
U5
U7
U6U2
U12U8
J5J4
U9
U10
U11
J1
J13
U14
U13
U15
EPROM
J2
+5V
+5V
GND
J3
U16
DSP
U17
U18
J4
L/R
+5V
TXD
RXD
GND
S1 S2
ON
ON
12345678
12345678
J8 J9 J10 J11 J12
REAR PANEL
REAR PANEL
SP2400 INPUT BOARD
S4
S3
J7
J1B J1A
J6
–18 +18
ONOFF
J2 J3
F1 F2
J4
1
C62
C11
2
SP2400 AMP-1 BOARD SP2400 AMP-1 BOARD
3
1
R68
2
3
J1
1
1
2
J9
3
C17 C18
3
2
2
3
1
J6
J3
J2
C1 C2 C3 C4 C5 C6
C7
C8 C10
JP2
R110 R67
J11 J15 J10
1
1
1
2
2
2
3
3
3
C9
JP1
C15
SP2400 AMP-2 BOARD SP2400 AMP-2 BOARD
J1
J3
J8
R2
C2
J5
4A SB 250V
J11
J14
SP2400 POWER SUPPLY BOARD
Remove cover.
1. Remove 12 screws from the top of the
cover using a #2 Phillips-head screwdriver.
These screws are all one size.
2. Remove the front rack mount brackets and
rear support brackets by removing three
screws per bracket. These screws are all
one size.
3. Remove two additional screws on each
side of the unit. These screws are all one
size.
Note: Remember which screws are used for
the top, brackets, and sides so that you can
properly reinstall the top c over.
J4
1
C62
C11
2
3
1
J5
F1
SP2400:SOFT START
055-286-00 REV:__
D2
+
D1
J12
®
© 2000
MACKIE DESIGNS. ™
C1
R1
R5
R6
JP1
K1
R4
BROWN
R3
BLUE
C3
RISK OF FIRE! REPLACE WITH FUSE AS MARKED
R68
2
3
J1
1
1
2
J9
3
C17 C18
J2
J4
J9
J6
J7
J10
J13
3
2
2
3
1
J6
J3
J2
C1 C2 C3 C4 C5 C6
C7
C8 C10
JP2
C15
FRONT PANEL
Install SP-DSP1 Board
4. Using a pair of needlenose pliers,
carefully remove the jumper from J4 pins
10 and 11 on the Filter board (rear of unit,
closest to the bottom).
S2
R150
R131
Install Ribbon Cable (040-470-00)
5. Install the ribbon cable (040-470-00) onto
J4. Make sure the tab on the connector
lines up with the notch in the socket.
J10
R127 R128 R129
J11
SP2400 FILTER BOARD
Remove Jumper and
R133
R136
R134
R137
J4 J5
1
2
3
C9
JP1
R146
R149R148
R110 R67
J11 J15 J10
1
1
2
2
3
3
J5
R145
R147
R142
J9J8
R132
C92C93
C89
L9
R143
L7L5L3
L6
L10
C91
C94 C95 C96
R121 R97
J6
1
R96
2
3
U25
J3
2
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