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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.
J1
J2
D3
D22
C23
U25
C40
C54
EQ ENGAGE
Q1
L6
L2
L3
S1
L4
L5
J7
J8
EQ Bypass Internal Jumper
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.
Amplifier Configuration Internal Jumpers
SP1200 – 14
SP1200 FILTER BOARD
3
2
EQ BYPASS
1
J6
C94
C95
C96
C91
L7
L9
C92 C93
R132
J9
R147
R142
R148
R149
R145
R146
S2
JP1
C9
J5
3
3
3
70V/100V
2
2
2
8Ω
1
1
1
R110
J11
J15
J10
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 8Ω/250W operation
Jumper pins 2 and 3 for 70V or 8Ω/150W operation
J3
Jumper pins 1 and 2 for 70V or 8Ω/150W operation
Jumper pins 2 and 3 for 100V or 8Ω/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
SP1200 AMP BOARD
C15
C7
C1 C2 C3
C4 C5 C6
J2
J6
1
100V or 8Ω/250W
2
70V or 8Ω/150W
3
JP2
C17
C18
C8
C10
J3
3
3
100V or 8Ω/250W
J9
2
2
70V or 8Ω/150W
1
1
J1
3
2
R68
1
3
100V
2
70V or 8Ω
C11
1
J4
R67
70V/100V
8Ω
70V/100V
8Ω
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