Alto Mistral-4000, Mistral-2500 Service Manual
Service
MODEL: MISTRAL2500/4000
www.altoproaudio.com
Version 2.0
1
CONTENTS
1. Introduction..………………………………………………………….………………..2
2. Specification.…………………………………………………………….……….…….3
3. Schematic Diagram…………….…………………….……….….…………………....4
4. Wiring Diagram..……………….…………….………...…….………………….…….11
5. PCB Layout……..……………….…………….………...…….………………….…....13
6. Test Procedure…………..……………………….………………………….…….......18
7. Exploded Views &Mechanical Parts List…………………………….…………....19
8. BOM.…………………………………………………………………….……………….24
2
1. Introduction
A
LTO MISTRAL amplifiers are series of innovative design power amplifiers. This series work under high
stability with great power supply in just 2-rack spaces. Airflow is from back to front panel to keep in a nice air
circulation inside the Rack. The automatic fan, which affects the temperature of machine includes various
kinds of speed, therefore, this low-noise fan makes a good result in cooling the heat from machines. MISTRAL
amplifiers include 2 independent channels with separate protection system and power supply. The
independent protection system avoids opening circuit, short, and wrong loading or over-heating. The special-
designed protective system applies automatically restarting functions upon the default status and then goes
back to normal. All electronic inputs equip standard power connectors. And all inputs are electronic balanced,
with hi-quality transformer, MISTRAL amplifiers provide an outstanding performance in any conditions.
Innovative design and high stability power amplifiers.
Fan-cooled AB class high power amplifier in 19”rack, 2Usize
Rugged amplifiers in a strong, compact chassis.
2 independent channels with separate protection system and power supply
Smart-designed protection system for auto re-operation after fault.
Auto-adjusting speed fan.
4LEDs for operation/protection, limit, power on and clip
High-current toroidal transformer designed for high power at 2Ohms with low noise.
Independent DC and thermal overload protection on each channel.
IEC standard power connectors.
Binding post and NEUTRIK® SPEAKON outputs power connectors.
Balanced XLR inputs/ parallel outputs.
3
2. Specification
MISTRAL2500 MISTRAL4000
Output Power
20Hz~20KHz @0.1% THD, SCD MODE
8 ohms per channel (EIAJ) 450W 625W
4 ohms per channel (EIAJ) 700W 1000W
BRIDGE MONO MODE
8 ohms , 1KHz, 0.1%THD 140W 2000W
Distortion (SMPTE-IM)
<0.05%
Frequency Response 20Hz-20kHz +/- 0.1dB, -3 dB points: 10Hz-60kHz
Damping Factor, 1 kHz and below >300 at 8 ohms
Signal to Noise, 20 Hz-20 kHz 102 dB
VOLTAGE GAIN 40x (32dB)
Input Sensitivity @ 4 ohms 1Vrms
Input Clipping 10 Vrms (+22 dB)
Input Impedance 10 k ohms unbalanced, 20 k ohms balanced 56(36dB)
Controls
FRONT: AC SWITCH, CH1 & CH2 GAIN KNOBS
REAR: LIMITER, BRIDGE SELECTOR.
Indicators (1 per channel)
Power-On: Blue LED
Operation/Protection : Dual Color (Green/Red LED)
Limit : Red LED
Clip : Red LED
Connectors, each channel
Input: Active balanced XLR
Parallel Output : XLR
Output: NEUTRIK Speakon and Binding posts
Cooling Continuously variable-speed fan, rear-to-front air flow
Load Protection On/off muting, DC-fault load grounding relay. Internal fault fuses.
Power Requirements 200-240(100-120)Vac, 50-60Hz
Dimensions
15.9" (40 cm) deep (rack mounting to rear support ears)
19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 rack spaces)
1 2 3 4 5 6 7 8
A
B
C
D
8
7654321
D
C
B
A
C1_15
C1_16
1000uF/100V
C1_17
C1_18
C1_19
C1_20
C1_21
C1_22
C1_23
C1_24
C1_25
C1_26
12x1000uF/100V
R1_25
22R 1W
R1_28
0.22 5W
R1_29
0.22 5W
Q1_5 Q1_6
D1_9
1N4148
+83V_A
D1_15
1N5402
GND1
4x2SA1943
Q1_1
MJE15032
R1_23
1K 5W
R1_24
1K 5W
C1_40
22nF/100V poly
C1_13
3.3nF/50 cer
C1_14
3.3nF/50 cer
R1_62
5R6 1W
R1_22
5R6 1W
GND1
D1_13
1N4148
Q1_2
MJE15033
D1_14
1N4148
Q1_9 Q1_10 Q1_11 Q1_12
R1_32
22R 1W
R1_33
0.22 5W
R1_34
0.22 5W
R1_35
0.22 5W
R1_36
0.22 5W
GND1
-83V_A
D1_16
1N5402
D1_11
0R
D1_12
0R
D1_5
1N4936
D1_6
1N4936
C1_11
560pF/50 cer
C1_12
N/C
D1_7
ZD5V6 1/2W
R1_14
820R
R1_15
3K3 10W
R1_18
820R
R1_19
3K3 10W
D1_8
ZD5V6 1/2W
D1_10
1N4148
V1+
D1_1
ZD15V1.3W
C1_8
220uF/25V
GND1
D1_2
W2-04
R1_9
100R
GND1
V1-
C1_7
56pF/50 cer
R1_8
10K
C1_10
27pF/50 cer
R1_11
15K SPEAKERS BUS
R1_10
330R
C1_9
0R
GND1
R1_6
4K7
R1 7 4K7
GND1
CH1 GAIN
C1_6
47uF/35V
D1_4
ZD15V1.3W
C1_45
220uF/25V
GND1
RB1_1A
4x10K
RB1_1B
4x10K
C1_3
100pF/50 cer
C1_5
47uF/35V
RB1_1C
4x10K
RB1_1D
4x10K
C1_4
100pF/50 cer
C1_2
22uF/50V
GND1
C1_1
22uF/50V
1
4
235
678
9
T1_1
FCT TAUD600
GND1
R1_17
NTC 50R
R1 16
TRIMMER 100R
R1_20
TRIMMER 1K
R1_21
TRIMMER 1K
3
2
1
U1_1A
NJM4560L
5
6
7
U1_1B
NJM4560L
84
U1_1C
NJM4580L
V1+
V1-
TP1_3
TP1_6
123
R1_5
3P-2.5
J1_4
3P2.5
J1_5
3P2.5
MIS25-CH1.Sch
Titel
Size
Fie:
Date:
Drawn By:
Sheet
RevisionModel No:
29-Apr-2004
KEVIN LIN.
ALTO MISTRAL2500-CH1 DRIVE
21 of
MISTRAL2500
VER031212
A2
PCB# MIS4000.PCB
3
2
1
U1_2A
NJM4560L
5
6
7
U1_2B
NJM4560L
GND1
R1_53
8K2
R1_54
10K
C1_35
56pF/50 cer
84
U1_2C
NJM4580L
V1+
V1-
CH1 PILOTLIM
R1_52
47R
D1_24
W2-04
2
1
3
S1_1A
SW 2C_2P
(CH1 LIMITER MODE)
GND1
R1_55
330R
C1_37
220uF/16V
41
2 3
U1_5
VTL5C2
GND1
R1_51
100K
GND1
C1_36
56pF/50 cer
GND1
(FTR VT90N1 VACTEC+)
1 2
3 4
5 6
7 8
9 10
JP1_16
H
EADER 5X2
R1_57
100R
R1_56
82K 1/2W
R1_58
68K 1/2W
+83V_A
-83V_A
GND1
1 2
3 4
5 6
7 8
9 10
JP1_3
HEADER 5X2
GND1 GND1
CH1 INSERT CONNECTOR
2 1
D1_25
1N4004
V1+
2 1
D1_26
1N4004
V1-
CH1 INSERT IN
CH1 INSERT OUT
213
J1_2
XLR MALE90
213
J1_1
XLR FEMALE90
CH1 INPUT
GND1
1 2
3 4
5 6
7 8
9 10
JP1_15
HEADER 5X2
GND1 GND1
5
4
6
S1_1B
SWITCH 2C_2P
NORMAL
BRIDGED
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
CH1 CLIP+
OUTPUT STAGE_A
1 2
L1_1
2uH 10A
1 2
R1_39
5R6 2W
R1_40
12R 5W
R1_41
12R 5W
C1_31
68nF/250V poly
GND1
K1_1
RELAY VBS SERIES
D1_23
1N4004
GND1
CH1 OUTPUT
1
2
JP1_1
CN-PCB6.3
1
2
JP1_2
CN-PCB6.3
1+
1-
GND1
TO
SPEAKON PCB
CH1 OUTPUT
D1_19
W2-04
R1_44
6K8 1W
R1_43
100K
Q1_16
MPSA92
R1_42
330K
Q1_15
MPSA92
D1_17
5mm RED LED
R1_46
100K
R1_47 47K
D1_18
ZD7V5 1/2W
Q1_17
MPSA42
R1_48
330K
D1_20
1N4004
TURN ON DELAY
C1_32
10uF/63
C1_33
47uF/63V
R1_45
1K5
C1_34
220uF/16V NP
D1 21
ZD36V 1W
R1_63
1K 3W
D1_22
1N4004
R1_50
PTC 65R
R1_49
10K 5W
+83V_A
100R/10K
GND1
CH1 BILED2
RELAY POWER1
CH1 BILED2
CH1 CLIP-
CH1 CLIP+
CH1 CLIP-
CH1 IN-
CH1 IN+
(PARALLEL OUTPUT)
-V_FAN_CH1
VAC FAN1-CH1
FAN OUT CH1
VAC FAN2-CH1
1
2
JP1_5
CN-PCB6.3
1
2
JP1_6
CN-PCB6.3
1
2
JP1_9
JEF-505
1
2
JP1_10
JEF-505
RECTIFIER BRIDGE1+
+83V_A
COM1
1
2
JP1_7
CN-PCB6.3
1
2
JP1_8
CN-PCB6.3
1
2
JP1_11
JEF-505
1
2
JP1_12
JEF-505
RECTIFIER BRIDGE1-
-83V_A
AC INPUT
123
JP1_13
HEADER 3
1
2
3
4
D1_27
W2-04
C1_42
470uF/35V
U1_4
LM317T
12
R1_1
1K8
R1_2
150R
C1_44
100nF/50 cer
C1_43
10uF/63
D1_28
1N4004
1
2
JP1_14
2P2.5
+12V
FAN
OUTPUT STAGE_A
RELAY POWER1
6.3x32 FUSE HOLDER
MISTRAL2500 Schematic Diagram 1 of 2
FUSE1-1
16AT
FUSE1-2
16AT
R1_3
NTC 100R
FAN OUT CH1
-V_FAN_CH1
VAC FAN1-CH1
VAC FAN2-CH1
ON/PROTECTION
(OPTION)
CH1 PHOTO COUPLER
-15V
+15V
CH1 BILED1
CH1 BILED1
GND1
R1_64
15K
CH1 BRIDGE SWITCH
CH2 AMPLIFIER
MIS25-CH2.SCH
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
4x2SC5200
R1_30
0.22 5W
R1_31
0.22 5W
Q1_7 Q1_8
R1_13
68R
C1_38
1.5nF/250 cer
3. Schematic Diagram
4
1 2 3 4 5 6 7 8
A
B
C
D
8
7654321
D
C
B
A
C2_15
C2_16
1000uF/100V
C2_17
C2_18
C2_19
C2_20
C2_21
C2_22
C2_23
C2_24
C2_25
C2_26
12x1000uF/100V
R2_25
22R 1W
R2_28
0.22 5W
R2_29
0.22 5W
R2_30
0.22 5W
Q2_5
R2_31
0.22 5W
Q2_6
D2_9
1N4148
Q2_7
+83V_B
Q2_8
D2_15
1N5402
GND2
4x2SA1943
Q2_1
MJE15032
R2_23
1K 5W
R2_24
1K 5W
C2_40
22nF/100V poly
C2_13
3.3nF/50 cer
C2_14
3.3nF/50 cer
R2_62
5R6 1W
R2_22
5R6 1W
GND2
D2_13
1N4148
Q2_2
MJE15033
D2_14
1N4148
Q2_9 Q2_10 Q2_11 Q2_12
R2_32
22R 1W
R2_33
0.22 5W
R2_34
0.22 5W
R2_35
0.22 5W
R2_36
0.22 5W
GND2
-83V_B
D2_16
1N5402
D2_11
0R
D2_12
0R
D2_5
1N4936
D2_6
1N4936
C2_11
560pF/50 cer
C2_12
N/C
D2_7
ZD5V6 1/2W
R2_14
820R
R2_15
3K3 10W
R2_18
820R
R2_19
3K3 10W
D2_8
ZD5V6 1/2W
D2_10
1N4148
V2+
D2_1
ZD15V1.3W
C2_8
220uF/25V
GND2
D2_2
W2-04
R2_9
100R
GND2
V2-
C2_7
56pF/50 cer
R2_8
10K
C2_10
27pF/50 cer
R2_11
15K SPEAKERS BUS
R2_10
330R
C2_9
0R
GND2
R2_6
4K7
R2 7 4K7
GND2
CH2 GAIN
C2_6
47uF/35V D2_4
ZD15V1.3W
C2_45
220uF/25V
GND2
RB2_1A
4x10K
RB2_1B
4x10K
C2_3
100pF/50 cer
C2_5
47uF/35V
RB2_1C
4x10K
RB2_1D
4x10K
C2_4
100pF/50 cer
C2_2
22uF/50V
GND2
C2_1
22uF/50V
1
4
235
678
9
T2_1
FCT TAUD600
GND2
R2_17
NTC 50R
R2 16
TRIMMER 100R
R2_20
TRIMMER 1K
R2_21
TRIMMER 1K
3
2
1
U2_1A
NJM4560L
5
6
7
U2_1B
NJM4560L
84
U2_1C
NJM4580L
V2+
V2-
TP2_3
TP2_6
123
R2_5
3P-2.5
J2_4
3P2.5
J2_5
3P2.5
MIS25-CH2.Sch
Titel
Size
Fie:
Date:
Drawn By:
Sheet
RevisionModel No:
29-Apr-2004
KEVIN LIN.
ALTO MISTRAL2500-CH2 DRIVE
21 of
MISTRAL2500
VER031212
A2
PCB# MIS4000.PCB
3
2
1
U2_2A
NJM4560L
5
6
7
U2_2B
NJM4560L
GND2
R2_53
8K2
R2_54
10K
C2_35
56pF/50 cer
84
U2_2C
NJM4580L
V2+
V2-
CH2 PILOTLIM
R2_52
47R
D2_24
W2-04
2
1
3
S2_1A
SW 2C_2P
(CH1 LIMITER MODE)
GND2
R2_55
330R
C2_37
220uF/16V
41
2 3
U2_5
VTL5C2
GND2
R2_51
100K
GND2
C2_36
56pF/50 cer
GND2
(FTR VT90N1 VACTEC+)
1 2
3 4
5 6
7 8
9 10
JP2_16
H
EADER 5X2
R2_57
100R
R2_56
82K 1/2W
R2_58
68K 1/2W
+83V_B
-83V_B
GND2
1 2
3 4
5 6
7 8
9 10
JP2_3
HEADER 5X2
GND2 GND2
CH2 INSERT CONNECTOR
2 1
D2_25
1N4004
V2+
2 1
D2_26
1N4004
V2-
CH2 INSERT IN
CH2 INSERT OUT
213
J2_2
XLR MALE90
213
J2_1
XLR FEMALE90
CH2 INPUT
GND2
1 2
3 4
5 6
7 8
9 10
JP2_15
HEADER 5X2
GND2 GND2
5
4
6
S2_1B
SWITCH 2C_2P
NORMAL
BRIDGED
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
CH2 CLIP+
OUTPUT STAGE_B
1 2
L2_1
2uH 10A
1 2
R2_39
5R6 2W
R2_40
12R 5W
R2_41
12R 5W
C2_31
68nF/250V poly
GND2
K2_1
RELAY VBS SERIES
D2_23
1N4004
GND2
CH2 OUTPUT
1
2
JP2_1
CN-PCB6.3
1
2
JP2_2
CN-PCB6.3
2+
2-
GND2
TO
SPEAKON PCB
CH2 OUTPUT
D2_19
W2-04
R2_44
6K8 1W
R2_43
100K
Q2_16
MPSA92
R2_42
330K
Q2_15
MPSA92
D2_17
5mm RED LED
R2_46
100K
R2_47 47K
D2_18
ZD7V5 1/2W
Q2_17
MPSA42
R2_48
330K
D2_20
1N4004
TURN ON DELAY
C2_32
10uF/63
C2_33
47uF/63V
R2_45
1K5
C2_34
220uF/16V NP
D2 21
ZD36V 1W
R2_63
1K 3W
D2_22
1N4004
R2_50
PTC 65R
R2_49
10K 5W
+83V_B
100R/10K
GND2
CH2 BILED2
RELAY POWER2
CH2 BILED2
CH2 CLIP-
CH2 CLIP+
CH2 CLIP-
CH2 LIMITER MODE
CH2 IN-
CH2 IN+
(PARALLEL OUTPUT)
CH2 BRIDGE
-V_FAN_CH2
VAC FAN1
CH2 LIMITER MODE
FAN OUT CH2
VAC FAN2
1
2
JP2_5
CN-PCB6.3
1
2
JP2_6
CN-PCB6.3
1
2
JP2_9
JEF-505
1
2
JP2_10
JEF-505
RECTIFIER BRIDGE2+
+83V_B
COM2
1
2
JP2_7
CN-PCB6.3
1
2
JP2_8
CN-PCB6.3
1
2
JP2_11
JEF-505
1
2
JP2_12
JEF-505
RECTIFIER BRIDGE2-
-83V_B
AC INPUT
123
JP2_13
HEADER 3
1
2
3
4
D2_27
W2-04
C2_42
470uF/35V
U2_4
LM317T
12
R2_1
1K8
R2_2
150R
C2_44
100nF/50 cer
C2_43
10uF/63
D2_28
1N4004
1
2
JP2_14
2P2.5
+12V
FAN
OUTPUT STAGE_B
RELAY POWER2
6.3x32 FUSE HOLDER
MISTRAL2500 Schematic Diagram 2 of 2
FUSE2-1
16AT
FUSE2-2
16AT
R2_3
NTC 100R
FAN OUT CH2
-V_FAN_CH2
VAC FAN1
VAC FAN2
ON/PROTECTION
(OPTION)
CH2 PHOTO COUPLER
-15V
+15V
CH2 BILED1
CH2 BILED1
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
4x2SC5200
R2_13
68R
C2_38
1.5nF/250 cer
5
1 2 3 4 5 6 7 8
A
B
C
D
8
7654321
D
C
B
A
C1_15
C1_16
470uF/160V
C1_17
C1_18
C1_19
C1_20
C1_21
C1_22
C1_23
C1_24
C1_25
C1_26
16x470uF/160V
R1_25
22R 1W
R1_28
0.22 5W
R1_29
0.22 5W
R1_30
0.22 5W
R1_31
0.22 5W
Q1_5 Q1_6 Q1_7 Q1_8
D1_9
1N4148
+83V_A
D1_15
1N5402
GND1
6x2SA1943
Q1_1
MJE15032
R1_23
1K5 5W
R1_24
1K5 5W
C1_40
22nF/100V poly
C1_13
3.3nF/50 cer
C1_14
3.3nF/50 cer
R1_62
5R6 1W
R1_22
5R6 1W
GND1
D1_13
1N4148
Q1_2
MJE15033
D1_14
1N4148
Q1_9 Q1_10 Q1_11 Q1_12
R1_32
22R 1W
R1_33
0.22 5W
R1_34
0.22 5W
R1_35
0.22 5W
R1_36
0.22 5W
GND1
-83V_A
D1_16
1N5402
D1_11
0R
D1_12
0R
D1_5
1N4936
D1_6
1N4936
C1_11
560pF/50 cer
C1_12
N/C
D1_7
ZD5V6 1/2W
R1_14
820R
R1_15
4K8 10W
R1_18
820R
R1_19
4K8 10W
D1_8
ZD5V6 1/2W
D1_10
1N4148
V1+
D1_1
ZD15V1.3W
C1_8
220uF/25V
GND1
D1_2
W2-04
R1_9
100R
GND1
V1-
C1_7
56pF/50 cer
R1_8
10K
C1_10
27pF/50 cer
R1_11
15K SPEAKERS BUS
R1_10
330R
C1_9
0R
GND1
R1_6
4K7
R1 7 4K7
GND1
CH1 GAIN
C1_6
47uF/35V
D1_4
ZD15V1.3W
C1_45
220uF/25V
GND1
RB1_1A
4x10K
RB1_1B
4x10K
C1_3
100pF/50 cer
C1_5
47uF/35V
RB1_1C
4x10K
RB1_1D
4x10K
C1_4
100pF/50 cer
C1_2
22uF/50V
GND1
C1_1
22uF/50V
1
4
235
678
9
T1_1
FCT TAUD600
GND1
R1_17
NTC 50R
R1 16
TRIMMER 100R
R1_20
TRIMMER 2K2
R1_21
TRIMMER 2K2
3
2
1
U1_1A
NJM4560L
5
6
7
U1_1B
NJM4560L
84
U1_1C
NJM4580L
V1+
V1-
TP1_3
TP1_6
123
R1_5
3P-2.5
J1_4
3P2.5
J1_5
3P2.5
MIS40-CH1.Sch
Titel
Size
Fie:
Date:
Drawn By:
Sheet
RevisionModel No:
29-Apr-2004
KEVIN LIN.
ALTO MISTRAL4000-CH1 DRIVE
21 of
MISTRAL4000
VER031212
A2
PCB# MIS4000.PCB
3
2
1
U1_2A
NJM4560L
5
6
7
U1_2B
NJM4560L
GND1
R1_53
8K2
R1_54
10K
C1_35
56pF/50 cer
84
U1_2C
NJM4580L
V1+
V1-
CH1 PILOTLIM
R1_52
47R
D1_24
W2-04
2
1
3
S1_1A
SW 2C_2P
(CH1 LIMITER MODE)
GND1
R1_55
330R
C1_37
220uF/16V
41
2 3
U1_5
VTL5C2
GND1
R1_51
100K
GND1
C1_36
56pF/50 cer
GND1
(FTR VT90N1 VACTEC+)
1 2
3 4
5 6
7 8
9 10
JP1_16
H
EADER 5X2
R1_57
100R
R1_56
82K 1/2W
R1_58
68K 1/2W
+83V_A
-83V_A
GND1
1 2
3 4
5 6
7 8
9 10
JP1_3
HEADER 5X2
GND1 GND1
CH1 INSERT CONNECTOR
2 1
D1_25
1N4004
V1+
2 1
D1_26
1N4004
V1-
CH1 INSERT IN
CH1 INSERT OUT
213
J1_2
XLR MALE90
213
J1_1
XLR FEMALE90
CH1 INPUT
GND1
1 2
3 4
5 6
7 8
9 10
JP1_15
HEADER 5X2
GND1 GND1
5
4
6
S1_1B
SWITCH 2C_2P
NORMAL
BRIDGED
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
CH1 CLIP+
OUTPUT STAGE_A
1 2
L1_1
2uH 10A
1 2
R1_39
5R6 2W
R1_40
12R 5W
R1_41
12R 5W
C1_31
68nF/250V poly
GND1
K1_1
RELAY VBS SERIES
D1_23
1N4004
GND1
CH1 OUTPUT
1
2
JP1_1
CN-PCB6.3
1
2
JP1_2
CN-PCB6.3
1+
1-
GND1
TO
SPEAKON PCB
CH1 OUTPUT
D1_19
W2-04
R1_44
6K8 1W
R1_43
100K
Q1_16
MPSA92
R1_42
330K
Q1_15
MPSA92
D1_17
5mm RED LED
R1_46
100K
R1_47 47K
D1_18
ZD7V5 1/2W
Q1_17
MPSA42
R1_48
330K
D1_20
1N4004
TURN ON DELAY
C1_32
10uF/63
C1_33
47uF/63V
R1_45
1K5
C1_34
220uF/16V NP
D1 21
ZD36V 1W
R1_63
1K 3W
D1_22
1N4004
R1_50
PTC 65R
R1_49
10K 5W
+83V_A
100R/10K
GND1
CH1 BILED2
RELAY POWER1
CH1 BILED2
CH1 CLIP-
CH1 CLIP+
CH1 CLIP-
CH1 IN-
CH1 IN+
(PARALLEL OUTPUT)
-V_FAN_CH1
VAC FAN1-CH1
FAN OUT CH1
VAC FAN2-CH1
1
2
JP1_5
CN-PCB6.3
1
2
JP1_6
CN-PCB6.3
1
2
JP1_9
JEF-505
1
2
JP1_10
JEF-505
RECTIFIER BRIDGE1+
+83V_A
COM1
1
2
JP1_7
CN-PCB6.3
1
2
JP1_8
CN-PCB6.3
1
2
JP1_11
JEF-505
1
2
JP1_12
JEF-505
RECTIFIER BRIDGE1-
-83V_A
AC INPUT
123
JP1_13
HEADER 3
1
2
3
4
D1_27
W2-04
C1_42
470uF/35V
U1_4
LM317T
12
R1_1
1K8
R1_2
150R
C1_44
100nF/50 cer
C1_43
10uF/63
D1_28
1N4004
1
2
JP1_14
2P2.5
+12V
FAN
OUTPUT STAGE_A
RELAY POWER1
6.3x32 FUSE HOLDER
MISTRAL4000 Schematic Diagram 1 of 2
FUSE1-1
10AT
FUSE1-2
10AT
R1_3
NTC 100R
FAN OUT CH1
-V_FAN_CH1
VAC FAN1-CH1
VAC FAN2-CH1
ON/PROTECTION
(OPTION)
CH1 PHOTO COUPLER
-15V
+15V
CH1 BILED1
CH1 BILED1
GND1
R1_64
15K
CH1 BRIDGE SWITCH
CH2 AMPLIFIER
MIS40-CH2.SCH
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
6x2SC5200
R1_27
0.22 5W
Q2_4
Q1_13
R2_37
0.22 5W
C1_28 C1_30
C1_27 C1_29
R1_13
68R
C1_38
1.5nF/250 cer
R1_26
0.22 5W
Q2_3
Q1_14
R2_38
0.22 5W
6
1 2 3 4 5 6 7 8
A
B
C
D
8
7654321
D
C
B
A
C2_15
C2_16
470uF/160V
C2_17
C2_18
C2_19
C2_20
C2_21
C2_22
C2_23
C2_24
C2_25
C2_26
12x470uF/160V
R2_25
22R 1W
R2_28
0.22 5W
R2_29
0.22 5W
R2_30
0.22 5W
R2_31
0.22 5W
Q2_5 Q2_6 Q2_7 Q2_8
D2_9
1N4148
+83V_B
D2_15
1N5402
GND2
6x2SA1943
Q2_1
MJE15032
R2_23
1K5 5W
R2_24
1K5 5W
C2_40
22nF/100V poly
C2_13
3.3nF/50 cer
C2_14
3.3nF/50 cer
R2_62
5R6 1W
R2_22
5R6 1W
GND2
D2_13
1N4148
Q2_2
MJE15033
D2_14
1N4148
Q2_9 Q2_10 Q2_11 Q2_12
R2_32
22R 1W
R2_33
0.22 5W
R2_34
0.22 5W
R2_35
0.22 5W
R2_36
0.22 5W
GND2
-83V_B
D2_16
1N5402
D2_11
0R
D2_12
0R
D2_5
1N4936
D2_6
1N4936
C2_11
560pF/50 cer
C2_12
N/C
D2_7
ZD5V6 1/2W
R2_14
820R
R2_15
4K8 10W
R2_18
820R
R2_19
4K8 10W
D2_8
ZD5V6 1/2W
D2_10
1N4148
V2+
D2_1
ZD15V1.3W
C2_8
220uF/25V
GND2
D2_2
W2-04
R2_9
100R
GND2
V2-
C2_7
56pF/50 cer
R2_8
10K
C2_10
27pF/50 cer
R2_11
15K SPEAKERS BUS
R2_10
330R
C2_9
0R
GND2
R2_6
4K7
R2 7 4K7
GND2
CH2 GAIN
C2_6
47uF/35V D2_4
ZD15V1.3W
C2_45
220uF/25V
GND2
RB2_1A
4x10K
RB2_1B
4x10K
C2_3
100pF/50 cer
C2_5
47uF/35V
RB2_1C
4x10K
RB2_1D
4x10K
C2_4
100pF/50 cer
C2_2
22uF/50V
GND2
C2_1
22uF/50V
1
4
235
678
9
T2_1
FCT TAUD600
GND2
R2_17
NTC 50R
R2 16
TRIMMER 100R
R2_20
TRIMMER 2K2
R2_21
TRIMMER 2K2
3
2
1
U2_1A
NJM4560L
5
6
7
U2_1B
NJM4560L
84
U2_1C
NJM4580L
V2+
V2-
TP2_3
TP2_6
123
R2_5
3P-2.5
J2_4
3P2.5
J2_5
3P2.5
MIS40-CH2.Sch
Titel
Size
Fie:
Date:
Drawn By:
Sheet
RevisionModel No:
29-Apr-2004
KEVIN LIN.
ALTO MISTRAL4000-CH2 DRIVE
21 of
MISTRAL4000
VER031212
A2
PCB# MIS4000.PCB
3
2
1
U2_2A
NJM4560L
5
6
7
U2_2B
NJM4560L
GND2
R2_53
8K2
R2_54
10K
C2_35
56pF/50 cer
84
U2_2C
NJM4580L
V2+
V2-
CH2 PILOTLIM
R2_52
47R
D2_24
W2-04
2
1
3
S2_1A
SW 2C_2P
(CH1 LIMITER MODE)
GND2
R2_55
330R
C2_37
220uF/16V
41
2 3
U2_5
VTL5C2
GND2
R2_51
100K
GND2
C2_36
56pF/50 cer
GND2
(FTR VT90N1 VACTEC+)
1 2
3 4
5 6
7 8
9 10
JP2_16
H
EADER 5X2
R2_57
100R
R2_56
82K 1/2W
R2_58
68K 1/2W
+83V_B
-83V_B
GND2
1 2
3 4
5 6
7 8
9 10
JP2_3
HEADER 5X2
GND2 GND2
CH2 INSERT CONNECTOR
2 1
D2_25
1N4004
V2+
2 1
D2_26
1N4004
V2-
CH2 INSERT IN
CH2 INSERT OUT
213
J2_2
XLR MALE90
213
J2_1
XLR FEMALE90
CH2 INPUT
GND2
1 2
3 4
5 6
7 8
9 10
JP2_15
HEADER 5X2
GND2 GND2
5
4
6
S2_1B
SWITCH 2C_2P
NORMAL
BRIDGED
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
CH2 CLIP+
OUTPUT STAGE_B
1 2
L2_1
2uH 10A
1 2
R2_39
5R6 2W
R2_40
12R 5W
R2_41
12R 5W
C2_31
68nF/250V poly
GND2
K2_1
RELAY VBS SERIES
D2_23
1N4004
GND2
CH2 OUTPUT
1
2
JP2_1
CN-PCB6.3
1
2
JP2_2
CN-PCB6.3
2+
2-
GND2
TO
SPEAKON PCB
CH2 OUTPUT
D2_19
W2-04
R2_44
6K8 1W
R2_43
100K
Q2_16
MPSA92
R2_42
330K
Q2_15
MPSA92
D2_17
5mm RED LED
R2_46
100K
R2_47 47K
D2_18
ZD7V5 1/2W
Q2_17
MPSA42
R2_48
330K
D2_20
1N4004
TURN ON DELAY
C2_32
10uF/63
C2_33
47uF/63V
R2_45
1K5
C2_34
220uF/16V NP
D2 21
ZD36V 1W
R2_63
1K 3W
D2_22
1N4004
R2_50
PTC 65R
R2_49
10K 5W
+83V_B
100R/10K
GND2
CH2 BILED2
RELAY POWER2
CH2 BILED2
CH2 CLIP-
CH2 CLIP+
CH2 CLIP-
CH2 LIMITER MODE
CH2 IN-
CH2 IN+
(PARALLEL OUTPUT)
CH2 BRIDGE
-V_FAN_CH2
VAC FAN1
CH2 LIMITER MODE
FAN OUT CH2
VAC FAN2
1
2
JP2_5
CN-PCB6.3
1
2
JP2_6
CN-PCB6.3
1
2
JP2_9
JEF-505
1
2
JP2_10
JEF-505
RECTIFIER BRIDGE2+
+83V_B
COM2
1
2
JP2_7
CN-PCB6.3
1
2
JP2_8
CN-PCB6.3
1
2
JP2_11
JEF-505
1
2
JP2_12
JEF-505
RECTIFIER BRIDGE2-
-83V_B
AC INPUT
123
JP2_13
HEADER 3
1
2
3
4
D2_27
W2-04
C2_42
470uF/35V
U2_4
LM317T
12
R2_1
1K8
R2_2
150R
C2_44
100nF/50 cer
C2_43
10uF/63
D2_28
1N4004
1
2
JP2_14
2P2.5
+12V
FAN
OUTPUT STAGE_B
RELAY POWER2
6.3x32 FUSE HOLDER
MISTRAL4000 Schematic Diagram 2 of 2
FUSE2-1
10AT
FUSE2-2
10AT
R2_3
NTC 100R
FAN OUT CH2
-V_FAN_CH2
VAC FAN1
VAC FAN2
ON/PROTECTION
(OPTION)
CH2 PHOTO COUPLER
-15V
+15V
CH2 BILED1
CH2 BILED1
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
(1.5A 200V)
6x2SC5200
R2_27
0.22 5W
Q2_4
Q2_13
R2_37
0.22 5W
C2_28 C2_30
C2_27 C2_29
R2_13
68R
C2_38
1.5nF/250 cer
Q2_14
R2_38
0.22 5W
R2_26
0.22 5W
Q2_3
7
1 2 3 4
A
B
C
D
4
321
D
C
B
A
R2_67
12R 5W
R2_68
12R 5W
R2_69
12R 5W
R2_70
12R 5W
R2_71
12R 5W
R2_72
12R 5W
R2_73
2K7 5W
R2_74
2K7 5W
D2_31
1N4004
12
C2_46
470uF/35V
LINE
NEUT
GND
IEC AC INLET
!"#! $"% #( )* (#
$+) ,-.) /- 0.1
($#2 3(, 4) /05 61
POWER SWITCH
1. COMPONENTS WITH ARE SAFETY CRITICAL PARTS.
63V
63V0V63V
63V
0V
13.5V
0V
115V or 120V
115V or 120V
0V
0V
T130!
T130!
PT-MIS4000-E
1
2
P1
CN-PCB6 3
1
2
P2
CN-PCB6 3
1
2
P8
CN-PCB6 3
1
2
P3
CN-PCB6 3
1
2
P4
CN-PCB6 3
1
2
P7
CN-PCB6 3
1
2
P5
CN-PCB6 3
1
2
P6
CN-PCB6 3
1 2
3 4
5 6
7 8
K2 2
RELAY-2-24
TRANS-IN
TRANS-IN
NEUTRAL
SWITCH
BD1
35A/200V
BD2
35A/200V
COM1
COM2
BRIDGE1+
BRIDGE1-
BRIDGE2+
BRIDGE2-
AC 1
(AC 2)
COM
M S40PWR Sch
Titel
Size
File
Date
Drawn By
Sheet
RevisionModel No
9-Apr-2004
KEVN L N
ALTO MISTRAL4000 POWER BOARD
11 of
MISTRAL4000
VER030504
A4
PCB# MIS40PWR.PCB
NEUTRAL
8
1 2 3 4
A
B
C
D
4
321
D
C
B
A
1 2
D2_30
3mm YELLOW LED
1 2
D2_3
3mm RED LED
1 2
D2_29
3mm BLUE LED
1 2
3 4
5 6
7 8
9 10
JP2_22
HEADER 5X2
LIMITER
CLIP
ON/PROTECTION
RED
GREEN
1
1
2
2
D2_1
3mm R/G BLCOL LED
POWER ON
1 2
D1_30
3mm YELLOW LED
1 2
D1_3
3mm RED LED
1 2
D1_29
3mm BLUE LED
1 2
3 4
5 6
7 8
9 10
JP1_22
HEADER 5X2
LIMITER
CLIP
ON/PROTECTION
RED
GREEN
1
1
2
2
D1_1
3mm R/G BLCOL LED
POWER ON
VR1_1
B50K
VR2_1
B50K
123
CN1_1
3P2 5
123
CN2_1
3P2 5
M S40FP Sch
Titel
Size
File
Date
Drawn By
Sheet
RevisionModel No
9-Apr-2004
C C LN
ALTO : MISTRAL4000 FP
11 of
MISTRAL4000
VER030710
A4
9
1 2 3 4
A
B
C
D
4
321
D
C
B
A
PJ1
PHONEJACK2
123
CN1
CON3
123
CN3
CON3
12345
CN4
CON5
123
CN2
CON3
M S40 N Sch
Titel
Size
File
Date
Drawn By
Sheet
RevisionModel No
9-Apr-2004
C C LN
ALTO : MISTRAL4000 INPUT
11 of
MISTRAL4000
VER031206
A4
10
1 2 3 4 5 6 7 8
A
B
C
D
8
7654321
D
C
B
A
MISTRAL4000 Chassis Wiring Drawing (100V-130V)
JP2_1
JP2_2
JP2_13
JP2_14
JP2_7
R2_5
JP2_5
JP2_6
JP2_8
JP1_5
JP1_6
JP1_8
JP1_1
JP1_2
JP1_13
JP1_14
JP1_7
R1_5
OUT1GND1OUT2GND2
P2
P1
P3
P4
P5
P6
P7
AC
AC
AC
AC
(COM2)
P8
PT-MIS4000-E
(BRIDGE+)
(AC_2)
(COM1)
(BRIDGE+)
(AC_1)
(GND1)
(CH1_OUT)
(GND2)
(CH2_OUT)
CN1_1 CN2_1
JP1_16 JP2_16
JP1_22 JP2_22
RED
BLACK
YELLOW
WHITE
WHITE
WHITE
RED
GREEN
PURPLE
PURPLE
BLACK
BLUE
GRAY
GRAY
HA01258
HA02471
HA01239
HA01237
HA02469
HA02470
HA02451
HA02450
HA01321
HA01243
HA01244
HA02488
HA01198
HA02449
HA01333
VER030613
DRAWING BY KEVIN LIN.
11
1 2 3 4 5 6 7 8
A
B
C
D
8
7654321
D
C
B
A
MISTRAL4000 Chassis Wiring Drawing (220V-240V)
JP2_1
JP2_2
JP2_13
JP2_14
JP2_7
R2_5
JP2_5
JP2_6
JP2_8
JP1_5
JP1_6
JP1_8
JP1_1
JP1_2
JP1_13
JP1_14
JP1_7
R1_5
OUT1GND1OUT2GND2
P2
P1
P3
P4
P5
P6
P7
AC
AC
AC
AC
(COM2)
P8
PT-MIS4000-E
(BRIDGE+)
(AC_2)
(COM1)
(BRIDGE+)
(AC_1)
(GND1)
(CH1_OUT)
(GND2)
(CH2_OUT)
CN1_1 CN2_1
JP1_16 JP2_16
JP1_22 JP2_22
RED
BLACK
YELLOW
WHITE
WHITE
WHITE
RED
GREEN
PURPLE
PURPLE
BLACK
BLUE
GRAY
GRAY
HA01258
HA02471
HA01239
HA01237
HA02469
HA02470
HA02451
HA02450
HA01321
HA01243
HA01244
HA02488
HA01198
HA02449
HA01333
VER030613
DRAWING BY KEVIN LIN.
5. PCB Layout
MIS40FP2
Bottom layer
Top overlay
MIS40PWR
Bottom layer
Top overlay
13
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