Pa Series Block Diagram - ALLEN & HEATH PA Series Service Information

MONO CHANNEL
PP GAIN
+48V
HPF
MIC IN
LINE IN
INSERT
100Hz
+ +
- -
STEREO CHANNEL
L GAIN
LR
ST1/3
R
CHAN
SUM
+
L
GAIN
ST2/4
R
FX CHANNEL
L
GAIN
EXT FX IN
R
SUM
+
INTERNAL FX
SELECT 1-16 / OFF
SEL

PA SERIES BLOCK DIAGRAM

PEAK
PFL
MUTE
4 BAND EQUALISER FADER
LF LM HM HF
PEAK
PFL
2 BAND EQUALISER MUTE
FADER
SUM
LF HF
+ SUM
SUM
PEAK
PFL
MUTE
FADER
+ SUM SUM
FX MUTE FOOTSWITCH
PFL
PAN
DIR OUT
FX
AUX
FB2
FB1
L INSERT
R INSERT
BAL
AFL
+
FX
FB1
FADER
MUTE
AUX
FB2
FB1
AFL
FB2
FADER
MUTE
AUX
+
FB2
FX
FB1
Products from serial number 019388
METERS
PFL/AFL
PHONES
LR / 2TRK
MONITOR
ADC
2TRK
L
2TRK IN L
R
R
PRE POST
2TRK TO LR
MAIN LR
BGM
MUTE
FADERS
SUM
+
MONO
SUB
LEV
SUM
100Hz
+
LF
FB1 OUT
SOURCE SELECT
L FB1 FB1
4 BAND EQUALISER
LF
R L R + FB2
FB2 OUT
AUX OUT
FX OUT
A OUT B OUT
pa_blockdiagram_2.doc
L
R HEADPHONES
SPDIF DIGITAL
2TRK OUT
ANALOG
L
MAIN OUT
R
MONO OUT
LM HM HF
A
SLAVE OUT
LM HM HF
B
A
LEV
PEAK
SIGNAL
SIGNAL
B
PEAK LEV LEV
Sheet 1 of 1