PA User Guide 33
System Block Diagram
Connector Types
XLR connector : Pin 2 = hot (+) Pin 3 = cold (-) Pin 1 = GND
TRS input and output connectors : Tip = hot (+) Ring = cold (-) Sleeve = GND
RCA phono : Pin = signal Sleeve = GND
Input Connections Type Impedance Sensitivity
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
Output Connections Type Impedance Level
A, B MAIN OUT Electronically balanced XLR <75 ohm 0dBu
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 to 600 ohm, 100 ohms recommended
Insert Connections Type Level
Channel, LR Unbalanced TRS tip = send, ring = return 0dBu
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
+
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
PFL
FX
AUX
FB2
FB1
R
L
PHONES
R
L
HEADPHONES
LR / 2TRK
LM HM HF
4 BAND EQUALISER
LF
A
B
LEV
LEV
SIGNAL
PEAK
A
SLAVE OUT
LEV
PEAK
SIGNAL
B
A OUT B OUT
FADERS
PFL/AFL
MONITOR
CHAN
PFL
MAIN OUT
2TRK TO LR
BGM
+
SUM
METERS
SEL
FB2R+L R
FB1LFB1
SOURCE SELECT
LM HM HFLF
+
-
GAIN
LM HM HF
4 BAND EQUALISER
MONO CHANNEL
100Hz
MIC IN
