1 input - 2 outputs, 3 inputs - 3 outputs (1), 3 inputs - 3 outputs (2) – TOA Electronics DA-550F CE User Manual
Page 9: 2 inputs - 2 outputs, 1 input - 4 outputs

9
Switch
BRIDGE 1
BRIDGE 2
CH 1 mode
ON
ON
ON
Setting
CH1
CH1
CH2
CH3
CH4
BRIDGE 1
BRIDGE 2
Speaker output terminals
8 Ω
8 Ω
-
+
-
+
[1 input - 2 outputs]
CH1
-
+
CH2
-
+
Speaker output terminals
Switch
BRIDGE 1
BRIDGE 2
CH 1 mode
OFF
ON
OFF
Setting
4 – 8 Ω
4 – 8 Ω
8 Ω
CH1
CH2
CH3
CH1
CH2
CH3
CH4
BRIDGE 2
-
+
[3 inputs - 3 outputs (1)]
CH3
-
+
CH4
-
+
Speaker output terminals
Switch
BRIDGE 1
BRIDGE 2
CH 1 mode
ON
OFF
OFF
Setting
8 Ω
4 – 8 Ω
4 – 8 Ω
CH3
CH4
CH1
CH3
CH4
CH1
CH2
BRIDGE 1
-
+
[3 inputs - 3 outputs (2)]
BRIDGE 1
BRIDGE 2
Speaker output terminals
Switch
BRIDGE 1
BRIDGE 2
CH 1 mode
ON
ON
OFF
Setting
8 Ω
8 Ω
CH1
CH3
CH1
CH2
CH3
CH4
-
+
-
+
[2 inputs - 2 outputs]
CH4
-
+
CH3
-
+
CH2
-
+
CH1
-
+
Speaker output terminals
Switch
BRIDGE 1
BRIDGE 2
CH 1 mode
OFF
OFF
ON
Setting
4 – 8 Ω
4 – 8 Ω
4 – 8 Ω
4 – 8 Ω
CH1
CH1
CH2
CH3
CH4
[1 input - 4 outputs]
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