Allen&Heath ALLEN & HEATH PA20-CP [33/36] System block diagram

Allen&Heath ALLEN & HEATH PA12-CP [33/36] System block diagram
System Block Diagram
XLR €•‚‚ƒ€„•… : Pin 2 = hot (+) Pin 3 = cold (-) Pin 1 = GND
TRS †‡•ˆ‚‰ƒ Š †‰‡•ˆ‚‰ƒ €•‚‚ƒ€„•…‰ Tip = hot (+) Ring = cold (-) Sleeve = GND
€•‚ƒ„…† ‡‚†ƒˆ„†„ˆ‰ ‹ŠŒ ••Œ…•„Š†Žƒ‚Šƒ ••†‘„†Š„ƒŽ’‚•‘„’
Mono MIC IN Balanced XLR female 2k ohm -63 to +5dBu
Mono LINE IN Balanced TRS jack >30k ohm -25 to +10dBu
ST1,3 LINE IN L,R Unbalanced RCA phono >10k ohm -10dBu max
ST2,4 LINE IN L,R Unbalanced TRS jack >10k ohm -10dBu max
2-TRK IN L,R Unbalanced RCA phono >10k ohm 0dBu
EXT FX IN L,R Unbalanced TRS jack >10k ohm 0dBu
AMP IN Unbalanced TRS jack >10k ohm 0dBu
€…•‚ƒ„…† ‡‚†ƒˆ„†„ˆ‰ ‹ŠŒ ••Œ…•„Š†Žƒ‚Šƒ “…•†ƒ‚’
L, R, MONO, Impedance balanced TRS jack <75 ohm 0dBu
A, B SLAVE OUT Impedance balanced TRS jack <75 ohm 0dBu
FB1, FB2, AUX, FX OUT Impedance balanced TRS jack <75 ohm 0dBu
2TRK OUT Unbalanced RCA phono <75 ohm 0dBu
2TRK OUT (SPDIF) RCA phono 75 ohm coax digital
HEADPHONES Tip = L Ring = R •„ 30 ˆ• 600 ”•, 100 ”• …ƒ€••ƒ‚ˆ•†–‚•
SPEAKER A, B Speakon pin1+ = speaker positive, pin1- = speaker negative
Minimum 4 ohms. —ƒ Š‘Œ•Ž’˜•™„ƒ ••‘„ ŠŽŠ ‘•ƒˆŠ‚ƒ‚Šƒ €•‚„–€„•†
Insert ‡‚†ƒˆ„†„ˆ‰ ‹ŠŒ “…•†ƒ‚’
Channel, LR Unbalanced TRS tip = send, ring = return 0dBu
+
-
GAIN
LM HM HF
4 BAND EQUALISER
MONO CHANNEL
100Hz
MIC IN
PP
FADER
PFL
PEAK
STEREO CHANNEL
FX
AUX
FB2
FB1
LF
ST2/4
R
L
R
L
GAIN
ST1/3
+
+
-
LINE IN
+48V
INSERT
MUTE
PAN
DIR OUT
GAIN
LR
SUM
HF
2 BAND EQUALISER
LF
FADER
PFL
PEAK
FX
AUX
FB2
FB1
MUTE
BAL
SUM
SUM
+
EXT FX IN
R
L
GAIN
+
SUM
FADER
PFL
PEAK
FB2
FB1
MUTE
+
SUM
SUM
+
FX MUTE FOOTSWITCH
FX CHANNEL
INTERNAL FX
SELECT 1-16 / OFF
L INSERT
R INSERT
FADERS
+
SUM
MUTE
L
R
R
L
2TRK IN
PRE POST
R
L
ANALOG
ADC
2TRK OUT
SPDIF DIGITAL
+
SUM
MONO OUT
MAIN LR
2TRK
MONO
LEV
HPF
100Hz
SUB
FADER
MUTE
AFL
FB1 OUT
FB1
FADER
MUTE
AFL
FB2 OUT
FB2
AUX
AUX OUT
FX
FX OUT
RL+ R FB2
FB1LFB1
SOURCE SELECT
LM HM HFLF
LM HM HF
4 BAND EQUALISER
LF
A
B
A
B
LEV
LEV
TEMP
PROTECT
SIGNAL
LIMITER
PROTECT
SIGNAL
LIMITER
STANDBY
SPK A SPK B
AMP A
AMP B
RELAY
SLAVE OUT
AMP IN
PFL
FX
AUX
FB2
FB1
R
L
PHONES
R
L
HEADPHONES
LR / 2TRK
PFL/AFL
MONITOR
CHAN
PFL
MAIN OUT
4 OHM 8 OHM
2TRK TO LR
BGM
+
SUM
METERS
SEL
Šˆ‹… ‡‚†ƒˆ„†„ˆŒ

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