Alto L-20 User Manual

1 2 3 4 5 6 7 8 9 10 11 12
A
B
C
D
12
1110987654321
D
C
B
A
CH2-CH12 IDENTICAL TO CH1
2
1
3
CH1
+48V
3-BAND EQ
12K100Hz-8kHz80
HI PASS
SG/OL
LEFT-BUS RIGHT-BUS AUX1 AUX2
RIGHT-BUS
LEFT-BUS
AUX1
AUX2
STEREO INPUT CHANNELS (CH13-20)
LEFT-BUS
RIGHT-BUS
AUX1
AUX4
MAIN OUT
LEFT-BUS
RIGHT-BUS
TAPE IN
RIGHT
2TK
2TK
LEFT METER
RIGHT METER
75Hz
+/-15db
4-BAND EQ
12K50080
+/-15db
MAIN MIX
MAIN MIX LEFT
T
R
S
MAIN MIX RIGHT
T
R
S
PHONE B
T
R
S
LEVEL
PHONES
LEFT
TAPE OUT
2
1
3
2
1
3
LEVEL
STEREO AUX RTN1
3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN
PAN
PHANTOM
CH1
GAIN
-
+
POWER
-
+
LO
(FREQ)
HI
AUX2
AUX1
FADER
POST
PRE
BALANCE
FADER
3c
5e
1a
4d
2b
LEFT(MONO)
3c
5e
1a
4d
2b
RIGHT
T
R
S
RN
TN
T
R
S
RN
TN
-
+
-
+
MIC GAIN:0~60dB
LINE IN TRIM:+15dB~-45dB
AFL-L AFL-R SOLO(PFL)
SOLO
ON
()
AFL-L
AFL-R
SOLO(PFL)
SOLO
ON
()
AFL-L
AFL-R
SOLO(PFL)
EFX SEND
LEFT-BUS RIGHT-BUS AUX1 AUX2 AFL-L AFL-R SOLO(PFL) DFX SEND
AFL L
AFL R
SOLO(PFL)
PFL LED
LOGIC
SOLO CTRL
SOLO ACTIVE
(LEVEL SET)
SOLO MODE
PFL
()
AFL
()
3c
5e
1a
4d
2b
INSERT
T
R
S
RN
TN
SUB1 SUB2
SUB1 SUB2
SUB2
SUB1
AUX SEND1
LEVEL
AUX SEND 4
LEVEL
+4dB/MIC
+4dB/MIC
SUB1
LEVEL
SUB OUT
SUB1
T
R
S
SUB1 TO MIX
RIGHT-BUS
LEFT-BUS
SUB1/2
MAIN MIX
CONTROL ROOM SOURCE
ASSIGN
2TK
RIGHT
LEFT
MID
LO M-H HIL-M
3K
12K50080 3K
SUB3 SUB4
SUB3 SUB4 AUX3 AUX4
SUB4
SUB3
AUX3 AUX4
MUTE
AUX4
AUX3
AUX3
AUX4
-20dB=SG(FLICKER)
+15dB=OL(GLOW)
3c
5e
1a
4d
2b
LINE OUT
T
R
S
RN
TN
DIRECT OUT
(CH1-CH12 ONLY)
2
1
3
MIC IN
+48V
PHANTOM
GAIN
-
+
POWER
CH13/14 &
RIGHT-BUS
LEFT-BUS
SUB2
SUB1
ASSIGN
SUB4
SUB3
AUX2
AUX2
AUX1
POST
PRE
AUX4
AUX3
AUX3
AUX4
SOLO LED
SOLO LED
CH15/16 ONLY
CH'S 17/18 & 19/20 ONLY
STEREO TRIM
-20dB=SG(FLICKER)
+15dB=OL(GLOW)
MUTE
MONITOR
AUX1
AUX1
DFX TO
RIGHT-BUS
STEREO AUX RTN2
3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN
-
+
MONITOR
DFX TO
AUX2
LEFT-BUS
STEREO AUX RTN3
3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN
-
+
STEREO AUX RTN4
3c
5e
1a
4d
2b
3c
5e
1a
4d
2b
LEVEL
-
+
T
R
S
RN
TN
T
R
S
RN
TN
-
+
ASSIGN TO
C-R/PHONES
CTRL/L CTRL/R
SOLO
ON
()
AFL-L
AFL-R
SOLO(PFL)
SOLO LED
RIGHT-BUS
LEFT-BUS
SUB2
SUB1
AUX RTN4
SUB4
SUB3
RIGHT-BUS
LEFT-BUS
CTRL-R-R
CTRL-R-L
(AUX SEND 2/3 IDENTICAL)
AFL-L
AFL-R
SOLO(PFL)
AFL-L
AFL-R
SOLO(PFL)
SOLO
ON
()
SOLO
ON
()
3c
5e
1a
4d
2b
MAIN INSERT
T
R
S
RN
TN
3c
5e
1a
4d
2b
MAIN INSERT
T
R
S
RN
TN
3c
5e
1a
4d
2b
MONO OUTPUT
T
R
S
RN
TN
MONO LEVEL
3c
5e
1a
4d
2b
AUX/DFX SEND
T
R
S
RN
TN
3c
5e
1a
4d
2b
AUX SEND
T
R
S
RN
TN
AUX SEND 1/2/3
AUX SEND 4
2TK TO MAIN
2TK TO MAIN
SUB1
SUBMIX 2 3 4 IDENTICAL TO SUB1
(TRIM)
(TRIM)
4-BAND EQ
+/-15db
MIC IN
LINE IN
CTRL ROOM OUTPUT
LEFT
T
R
S
RIGHT
T
R
S
PHONES OUTPUT
PHONE A
T
R
S
LEVEL
CTRL ROOM
SUB3/4
AFL-L
AFL-R
SOLO(PFL)
CTRL/L CTRL/R
FROM SUB2
FROM SUB3
FROM SUB4
DSP BOARD
PRESETS
VARIATIONS
MUTE
DSP FOOTSWITCH
FX OUT L
FX OUT R
CTRL-R-R
CTRL-R-L
DFX SEND
DFX SEND
SG/OL
HI PASS
75Hz
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
LEFT(MONO)
RIGHT
AUX RETURN
SOLO
ASSIGN TO
RIGHT-BUS
LEFT-BUS
GEQ
GEQ
EQ ON
L20MAP.Sch
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RevisionModel No:
1-Oct-2003
KEVIN LIN.
ALTO MIXING CONSOLE
11 of
L-20 BLOCK DIAGRAM
VER030125
A1
LOGIC
AUX2
AUX1
DFX RETURN TO
ALTO L-20
BLOCK DIAGRAM
(PRELIMINARY)
3c
5e
1a
4d
2b
SUB1 INSERT
T
S
RN
TN
IDENTICAL TO SUB1 INSERTSUB INSERT 2 3 4
DFX OUT
T
R
S

Alto L-20 Specifications

General

Brand	Alto
Model	L-20
Category	Music Mixer
Language	English