Eq bypass, Sp1200 amp board, Sp1200 filter board – MACKIE SP1200 User Manual
Page 14
SP1200 – 14
EQ Bypass
Jumper J6, located on each Filter Board, allows
you to bypass the 3-band EQ for the four Program
Inputs.
Jumper pins 1 and 2 to bypass the EQ.
Jumper pins 2 and 3 to engage the EQ (default).
Note: The top Input Board must be removed in
order to access Jumper J6 on the Filter Board.
L10
SP1200 FILTER BOARD
J6
1
2
3
C23
C54
C40
D22
J1
J2
D3
EQ BYPASS
EQ ENGAGE
C91
R147
R132
L9
J9
J8
J7
L7
L5
L3
L6
L4
L2
R145
S1
Q1
U25
S2
R146
R149
R148
C92 C93
C94
C95
C96
R142
R143
R133
R134
C89
R136
R137
R96
R121
R97
70V/100V/8 Ohm Settings
There are several jumpers on the Amplifier
Board that are used to configure the amplifiers for
use with a 70V distributed system, a 100V
distributed system, or an 8-ohm load.
The SP1200 is shipped with the jumpers set for
70 Volt operation in U.S. versions, and 100 Volt
operation in European versions. You will need to
change these jumpers only if you require a different
configuration than the default settings. Refer to the
following illustration for the locations of the jumpers.
On the Amplifier Board
J1
Jumper pins 1 and 2 for 8-ohm operation
Jumper pins 2 and 3 for 70V or 100V operation
J2
Jumper pins 1 and 2 for 100V or 8
Ω/250W operation
Jumper pins 2 and 3 for 70V or 8
Ω/150W operation
J3
Jumper pins 1 and 2 for 70V or 8
Ω/150W operation
Jumper pins 2 and 3 for 100V or 8
Ω/250W operation
J4
Jumper pins 1 and 2 for 70V or 8 ohm operation
Jumper pins 2 and 3 for 100V operation
J9
Jumper pins 1 and 2 for 8-ohm operation
Jumper pins 2 and 3 for 70V or 100V operation
J10
Jumper pins 1 and 2 for 8-ohm operation
Jumper pins 2 and 3 for 70V or 100V operation
J11
Jumper pins 1 and 2 for 8-ohm operation
Jumper pins 2 and 3 for 70V or 100V operation
J15
Jumper pins 1 and 2 for 8-ohm operation
Jumper pins 2 and 3 for 70V or 100V operation
J5
R110
R67
R68
C11
70V/100V
8
Ω
C62
SP1200 AMP BOARD
J4
J6
J1
1
2
3
1
2
3
1
2
3
J9
C9
JP1
JP2
C7
C1 C2 C3
C4 C5 C6
C8
C10
C17
C18
C15
70V/100V
8
Ω
1
2
3
J3
100V or 8
Ω/250W
70V or 8
Ω/150W
70V or 8
Ω
3
2
1
J2
100V or 8
Ω/250W
70V or 8
Ω/150W
100V
70V/100V
8
Ω
J11
J15
J10
1
2
3
1
2
3
1
2
3
Amplifier Configuration Internal Jumpers
EQ Bypass Internal Jumper