Mackie FRS-2800 Owner's Manual - Page 17

Block Diagram

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17 Owner's Manual INPUT 1 BALANCED LINE INPUT (XLR-F) INPUT 1 BALANCED LINE INPUT (TRS) INPUT 2 BALANCED LINE INPUT (XLR-F) INPUT 2 BALANCED LINE INPUT (TRS) POWER SWITCH FRS SERIES BLOCK DIAGRAM 04.06.07 ON OFF SUBSONIC FILTER ON OFF CHANNEL 1 LEVEL AMP MODE SWITCH CHANNEL 2 MONO LEVEL STEREO BRIDGE SWITCHING POWER SUPPLY 120V/240V JUMPER SWITCHING POWER CONTROLLER AMP MODE SWITCH MONO STEREO BRIDGE ON OFF CLIP LIMITER ON OFF HVDC+ LVDC+ POWER AMP 1 LVDC- HVDC- PROTECTION DC OFFSET OVER TEMP SHORT CIRCUIT CURRENT LIMIT AMPLIFIER HVDC+ LVDC+ POWER AMP 2 LVDC- HVDC- + - 1+ + 2- - 1- CHANNEL 1 2+ SPEAKER OUT 1+ + 2- 1- - 2+ BRIDGED SPEAKER OUT 1+ 2- + - 1- CHANNEL 2 2+ SPEAKER + OUT - HVDC+ LVDC+ TEMP SENSOR (ON HEATSINK) FAN VARIABLE SPEED CONTROL VDC+ LVDC- HVDC- VDC+ METER DISPLAY FAN FAN SPACEMAN VDC- Owner's Manual Block Diagram

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17
Owner’s Manual
Owner’s Manual
1+
1–
2–
2+
INPUT 1
BALANCED
LINE INPUT
(TRS)
INPUT 1
BALANCED
LINE INPUT
(XLR-F)
INPUT 2
BALANCED
LINE INPUT
(TRS)
FRS SERIES
BLOCK DIAGRAM
04.06.07
INPUT 2
BALANCED
LINE INPUT
(XLR-F)
STEREO
MONO
CHANNEL 2
LEVEL
CHANNEL 1
LEVEL
AMP
MODE
SWITCH
AMP
MODE
SWITCH
CLIP
LIMITER
BRIDGE
STEREO
MONO
BRIDGE
SUBSONIC
FILTER
ON
OFF
ON
OFF
ON
OFF
ON
HVDC+
POWER
AMP 1
POWER
AMP 2
PROTECTION
DC OFFSET
OVER TEMP
SHORT CIRCUIT
CURRENT LIMIT
AMPLIFIER
LVDC+
LVDC–
HVDC–
HVDC+
LVDC+
LVDC–
HVDC–
METER
DISPLAY
OFF
CHANNEL 1
SPEAKER
OUT
BRIDGED
SPEAKER
OUT
CHANNEL 2
SPEAKER
OUT
+
–
+
–
1+
1–
2–
2+
+
–
1+
1–
2–
2+
+
–
+
–
TEMP
SENSOR
(ON HEATSINK)
FAN
VARIABLE
SPEED
CONTROL
VDC+
POWER
SWITCH
SWITCHING POWER SUPPLY
HVDC+
LVDC+
LVDC–
HVDC–
VDC+
VDC–
120V/240V
JUMPER
SWITCHING
POWER
CONTROLLER
FAN
FAN
SPACEMAN
Block Diagram