ALTO 2500, 4000 Service Manual
Service
MODEL: MISTRAL2500/4000
www.altoproaudio.com
Version 2.0
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
1
1. Introduction
ALTO 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 specialdesigned 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.
2
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)
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
Indicators (1 per channel)
Connectors, each channel
<0.05%
FRONT: AC SWITCH, CH1 & CH2 GAIN KNOBS
REAR: LIMITER, BRIDGE SELECTOR.
Power-On: Blue LED
Operation/Protection : Dual Color (Green/Red LED)
Limit : Red LED
Clip : Red LED
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)
3
7654321
3. Schematic Diagram
4
8
D
C
XLR FEMALE90
XLR MALE90
(PARALLEL OUTPUT)
B
A
R1_58
68K 1/2W
CH1 BILED2
CH1 CLI P-
+15V
D1_1
ZD15V1.3W
GND1
7
C1_12
N/C
GND1
D1_4
-15V
R1_11
15K SPEAKERS BUS
C1_9
0R
3
2
1
C1_8
220uF/25V
C1_11
560pF/50 cer
R1_17
NTC 50R
C1_45
220uF/25V
R1_64
15K
1
4
3
R1_15
3K3 10W
R1_14
820R
D1_7
ZD5V6 1/2W
D1_5
1N4936
D1_6
1N4936
R1_16
TRIMMER 100R
R1_18
820R
D1_8
ZD5V6 1/2W
R1_19
3K3 10W
V1+
84
V1-
VAC FAN1-CH1
D1_27
(1.5A 200V)
W2 -0 4
2
-V_FAN_CH1
VAC FAN2-CH1
D1_9
1N4148
MJE15032
D1_11
0R
R1_21
TRIMMER 1K
R1_20
TRIMMER 1K
D1_12
0R
Q1_2
MJE15033
D1_10
1N4148
U1_1C
NJM4580L
C1_42
470uF/35V
Q1_1
R1_62
5R6 1W
R1_22
5R6 1W
R1_1
1K8
V1+
84
V1-
R1_25
22R 1W
TP1_3
TP1_6
R1_32
22R 1W
U1_2C
NJM4580L
U1_4
LM317T
12
R1_28
0.22 5W
Q1_5 Q1_6
4x2SA1943
12x1000uF/100V
C1_15
C1_17
D1_13
C1_13
3.3nF/50 cer
GND1
C1_14
3.3nF/50 cer
1000uF/100V
C1_16
1N4148
C1_40
22nF/100V poly
D1_14
1N4148
C1_18
4x2SC5200
Q1_9 Q1_10 Q1_11 Q1_12
R1_33
R1_34
0.22 5W
C1_44
100nF/50 cer
R1_35
0.22 5W
C1_43
10uF/63
0.22 5W
R1_3
NTC 100R
R1_2
150R
R1_29
0.22 5W
C1_19
C1_20
R1_36
0.22 5W
D1_28
1N4004
R1_30
0.22 5W
Q1_7 Q1_8
C1_21
C1_23
R1_23
1K 5W
R1_24
1K 5W
C1_22
C1_24
FAN OUT CH1
+12V
JP1_14
2P2.5
2
1
FAN
C1_25
C1_26
GND1
D1_15
1N5402
GND1
D1_16
1N5402
R1_31
0.22 5W
OUTPUT STAGE_A
+83V_A
1 2
1 2
-83V_A
GND1
K1_1
R1_39
5R6 2W
L1_1
2uH 10A
R1_40
12R 5W
GND1
5mm RED LED
Q1_15
MPSA92
D1_19
W2 -0 4
(1.5A 200V)
R1_44
6K8 1W
R1_41
12R 5W
C1_31
68nF/250V poly
CH1 BILED1
D1_17
R1_42
330K
Q1_16
MPSA92
R1_43
100K
RELAY VBS SERI ES
D1_23
1N4004
ON/PROTECTION
R1_46
100K
R1_47 47K
D1_20
1N4004
R1_48
330K
C1_32
10uF/63
R1_45
1K5
RELAY POWER1
CH1 OUTPU T
GND1
D1_18
ZD7V5 1/2W
CH1 BILED2
C1_33
47uF/63V
C1_ 34
220uF/16V NP
D1_22
1N4004
GND1
R1_63
1K 3W
CN-P CB6. 3
CH1 OUTPUT
SPEAKON PCB
JP1_2
CN-P CB6. 3
+83V_A
R1_49
10K 5W
R1_50
PTC 65R
100R/10K
Q1_17
MPSA42
TURN ON DELAY
D1_21
ZD36V 1W
JP1_1
MISTRAL2500 Schematic Diagram 1 of 2
CH2 AMPLIFIER
MIS25-CH2.S CH
Titel
ALTO MISTRAL2500-CH1 DRIVE
PCB# MIS4000.PCB
Size
Date:
File:
A2
MISTRAL2500
29-Apr-2004
MIS25-CH1.Sch
Sheet
Drawn By:
1
2
TO
1
2
RevisionModel No:
KEVIN LIN.
D
1+
1-
C
B
A
VER031212
21 of
CH1 INPUT
J1_1
J1_2
R1_53
8K2
(CH1 LIMITER MODE)
1
3
2
2
3
1
GND1
V1+
C1_35
56pF/50 cer
2
3
GND1
NJM4560L
(1.5A 200V)
S1_1A
3
1
GND1
2 1
SW 2C_2P
CH1 I N-
CH1 I N+
FCT TAUD6 00
(OPTION)
D1_25
1N4004
2
5
4
T1_1
GND1 GND1
CH1 INSERT CONNECTOR
R1_54
10K
1
U1_2A
D1_24
W2 -0 4
2
J1_4
3P2.5
GND1
1
3
J1_5
3P2.5
1 2
3 4
5 6
7 8
9 10
JP1_3
HEADER 5X2
-V_FAN_CH1
VAC FAN1-CH1
6
5
GND1
U1_2B
NJM4560L
R1_52
47R
C1_37
220uF/16V
CH1 CLI P+
R1_9
100R
GND1
CH1 CLI P-
C1_1
RB1_1A
6
9
7
8
22uF/50V
22uF/50V
4x10K
RB1_1C
4x10K
C1_2
C1_4
100pF/50 cer
CH1 INSERT IN
CH1 I NSE RT OUT
D1_26
2 1
1N4004
BRIDGED
6
4
NORMAL
GND1 GND1
HEADER 5X2
7
R1_55
330R
(FTR VT90N1 VACTEC+)
CH1 PHOTO COUPLER
D1_2
W2 -0 4
(1.5A 200V)
2
3
RB1_1D
4x10K
GND1
GND1
47uF/35V
V1-
S1_1B
SWITCH 2C_2P
5
1 2
3 4
5 6
7 8
9 10
JP1_15
-83V_A
+83V_A
CH1 BILED1
CH1 CLI P+
R1_57
100R
U1_5
VTL5C2
41
2 3
GND1
C1_3
100pF/50 cer
RB1_1B
4x10K
1
U1_1A
NJM4560L
C1_6
3
2
1
R1_5
3P-2.5
CH1 GAIN
CH1 BR IDGE S WITCH
FAN OUT CH1
VAC FAN2-CH1
56pF/50 cer
C1_5
47uF/35V
C1_36
GND1
GND1
R1_7 4K7
R1_6
4K7
R1_56
82K 1/2W
R1_51
100K
GND1
R1_8
10K
1 2
3 4
5 6
7 8
9 10
JP1_16
HEADER 5X2
CH1 P ILOTLIM
56pF/50 cer
6
5
U1_1B
NJM4560L
R1_10
V1+
C1_7
R1_13
68R
C1_38
1.5nF/250 cer
ZD15V1.3W
V1-
C1_10
27pF/50 cer
330R
GND1
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
JP1_5
CN-P CB6. 3
2
1
RECTIFIER BRIDGE1+
JP1_6
CN-P CB6. 3
2
1
COM1
JP1_7
CN-P CB6. 3
2
1
RECTIFIER BRIDGE1-
JP1_8
CN-P CB6. 3
2
1
AC INPUT
1 2 3 4 5 6 78
OUTPUT STAGE_A
RELAY POWER1
JP1_9
JEF-505
1
2
JP1_11
JEF-505
1
2
FUSE1-1
FUSE1-2
6.3x32 FUSE HOLDER
16AT
16AT
JP1_10
JEF-505
1
2
JP1_12
JEF-505
1
2
+83V_A
-83V_A
JP1_13
HEADER 3
7654321
5
8
D
C
XLR FEMALE90
XLR MALE90
(PARALLEL OUTPUT)
B
A
R2_58
68K 1/2W
CH2 BILED2
CH2 CLI P-
+15V
D2_1
ZD15V1.3W
GND2
7
C2_12
N/C
GND2
D2_4
-15V
R2_11
15K SPEAKERS BUS
C2_9
0R
3
2
1
C2_8
220uF/25V
C2_11
560pF/50 cer
R2_17
NTC 50R
C2_45
220uF/25V
1
4
3
R2_15
3K3 10W
R2_14
820R
D2_7
ZD5V6 1/2W
D2_5
1N4936
D2_6
1N4936
R2_16
TRIMMER 100R
R2_18
820R
D2_8
ZD5V6 1/2W
R2_19
3K3 10W
V2+
84
V2-
VAC FAN1
D2_27
W2 -0 4
(1.5A 200V)
2
-V_FAN_CH2
VAC FAN2
D2_9
1N4148
MJE15032
D2_11
0R
R2_21
TRIMMER 1K
R2_20
TRIMMER 1K
D2_12
0R
Q2_2
MJE15033
D2_10
1N4148
U2_1C
NJM4580L
C2_42
470uF/35V
Q2_1
R2_62
5R6 1W
R2_22
5R6 1W
R2_1
1K8
V2+
84
V2-
R2_25
22R 1W
TP2_3
TP2_6
R2_32
22R 1W
U2_2C
NJM4580L
U2_4
LM317T
12
R2_28
0.22 5W
Q2_5
4x2SA1943
12x1000uF/100V
C2_15
C2_17
D2_13
C2_13
3.3nF/50 cer
GND2
C2_14
3.3nF/50 cer
1000uF/100V
C2_16
1N4148
C2_40
22nF/100V poly
D2_14
1N4148
C2_18
4x2SC5200
Q2_9 Q2_10 Q2_11 Q2_12
R2_33
R2_34
0.22 5W
C2_44
100nF/50 cer
R2_35
0.22 5W
C2_43
10uF/63
0.22 5W
R2_3
NTC 100R
R2_2
150R
R2_29
0.22 5W
Q2_6
C2_19
C2_20
R2_36
0.22 5W
D2_28
1N4004
R2_30
0.22 5W
Q2_7
C2_21
C2_23
R2_23
1K 5W
R2_24
1K 5W
C2_22
C2_24
FAN OUT CH2
+12V
JP2_14
2P2.5
2
1
FAN
R2_31
0.22 5W
Q2_8
GND2
C2_25
OUTPUT STAGE_B
C2_26
D2_15
1N5402
GND2
D2_16
1N5402
+83V_B
K2_1
RELAY VBS SERI ES
CH2 OUTPU T
R2_39
5R6 2W
1 2
L2_1
1 2
-83V_B
2uH 10A
MPSA92
D2_19
W2 -0 4
(1.5A 200V)
GND2
R2_40
12R 5W
C2_31
68nF/250V poly
GND2
CH2 BILED1
D2_17
5mm RED LED
Q2_15
MPSA92
R2_44
6K8 1W
R2_41
12R 5W
R2_42
330K
Q2_16
R2_43
100K
D2_23
1N4004
ON/PROTECTION
R2_46
100K
D2_20
1N4004
C2_32
10uF/63
R2_45
1K5
RELAY POWER2
R2_47 47K
R2_48
330K
GND2
D2_18
ZD7V5 1/2W
CH2 BILED2
C2_33
47uF/63V
C2_ 34
220uF/16V NP
D2_22
1N4004
GND2
+83V_B
Q2_17
MPSA42
TURN ON DELAY
D2_21
ZD36V 1W
R2_63
1K 3W
MISTRAL2500 Schematic Diagram 2 of 2
Titel
ALTO MISTRAL2500-CH2 DRIVE
PCB# MIS4000.PCB
Size
Date:
File:
A2
MISTRAL2500
29-Apr-2004
MIS25-CH2.Sch
Sheet
Drawn By:
JP2_1
CN-P CB6. 3
1
2+
2
CH2 OUTPUT
TO
SPEAKON PCB
1
2-
2
JP2_2
CN-P CB6. 3
R2_49
10K 5W
R2_50
PTC 65R
100R/10K
RevisionModel No:
VER031212
21 of
KEVIN LIN.
D
C
B
A
CH2 LIMITER MODE
CH2 INPUT
1
3
2
J2_1
2
3
1
J2_2
V2+
R2_53
8K2
GND2
(CH1 LIMITER MODE)
CH2 I N-
CH2 I N+
FCT TAUD6 00
(OPTION)
GND2
2 1
D2_25
1N4004
GND2
R2_54
10K
R2_52
47R
1
2
GND2
1
6
9
7
8
3
1 2
3 4
5 6
7 8
9 10
JP2_3
HEADER 5X2
CH2 BR IDGE
-V_FAN_CH2
VAC FAN1
6
5
22uF/50V
22uF/50V
C2_35
56pF/50 cer
2
3
U2_2A
NJM4560L
D2_24
W2 -0 4
(1.5A 200V)
S2_1A
3
1
SW 2C_2P
J2_4
3P2.5
GND2
2
5
4
T2_1
J2_5
3P2.5
GND2 GND2
CH2 INSERT CONNECTOR
7
U2_2B
NJM4560L
R2_55
330R
C2_37
220uF/16V
(FTR VT90N1 VACTEC+)
CH2 PHOTO COUPLER
CH2 CLI P+
R2_9
100R
GND2
1 2
3 4
5 6
7 8
9 10
JP2_15
W2 -0 4
(1.5A 200V)
2
3
RB2_1D
4x10K
GND2
V2-
S2_1B
SWITCH 2C_2P
5
CH2 CLI P-
C2_1
RB2_1A
4x10K
RB2_1C
4x10K
C2_2
C2_4
100pF/50 cer
CH2 INSERT IN
CH2 I NSE RT OUT
D2_26
2 1
1N4004
BRIDGED
6
4
NORMAL
GND2 GND2
HEADER 5X2
-83V_B
+83V_B
R2_57
100R
U2_5
VTL5C2
41
D2_2
C2_3
100pF/50 cer
RB2_1B
4x10K
C2_6
47uF/35V
CH2 GAIN
CH2 BILED1
CH2 CLI P+
56pF/50 cer
2 3
GND2
C2_5
47uF/35V
1
U2_1A
NJM4560L
3
2
1
R2_5
3P-2.5
CH2 LIMITER MODE
FAN OUT CH2
VAC FAN2
C2_36
GND2
GND2
R2_7 4K7
R2_6
4K7
R2_56
82K 1/2W
R2_51
100K
GND2
R2_8
10K
1 2
3 4
5 6
7 8
9 10
JP2_16
HEADER 5X2
CH2 P ILOTLIM
56pF/50 cer
6
5
U2_1B
NJM4560L
R2_10
V2+
C2_7
R2_13
68R
C2_38
1.5nF/250 cer
ZD15V1.3W
V2-
C2_10
27pF/50 cer
330R
GND2
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
JP2_5
CN-P CB6. 3
2
1
RECTIFIER BRIDGE2+
JP2_6
CN-P CB6. 3
2
1
COM2
JP2_7
CN-P CB6. 3
2
1
RECTIFIER BRIDGE2-
JP2_8
CN-P CB6. 3
2
1
AC INPUT
1 2 3 4 5 6 78
OUTPUT STAGE_B
RELAY POWER2
JP2_9
JEF-505
1
2
JP2_11
JEF-505
1
2
FUSE2-1
16AT
FUSE2-2
6.3x32 FUSE HOLDER
16AT
JP2_10
JEF-505
1
2
JP2_12
JEF-505
1
2
+83V_B
-83V_B
JP2_13
HEADER 3
7654321
6
8
D
C
XLR FEMALE90
XLR MALE90
(PARALLEL OUTPUT)
B
A
R1_58
68K 1/2W
CH1 BILED2
CH1 CLI P-
+15V
D1_1
ZD15V1.3W
GND1
7
C1_12
N/C
GND1
D1_4
-15V
C1_10
27pF/50 cer
R1_11
15K SPEAKERS BUS
C1_9
0R
3
2
1
C1_8
220uF/25V
C1_11
560pF/50 cer
R1_17
NTC 50R
C1_45
220uF/25V
R1_64
15K
1
4
3
R1_15
4K8 10W
R1_14
820R
D1_7
ZD5V6 1/2W
D1_5
1N4936
D1_6
1N4936
R1_16
TRIMMER 100R
R1_18
820R
D1_8
ZD5V6 1/2W
R1_19
4K8 10W
V1+
84
V1-
VAC FAN1-CH1
D1_27
(1.5A 200V)
W2 -0 4
2
-V_FAN_CH1
VAC FAN2-CH1
D1_9
1N4148
MJE15032
D1_11
0R
5R6 1W
R1_21
TRIMMER 2K2
5R6 1W
R1_20
TRIMMER 2K2
D1_12
0R
Q1_2
MJE15033
D1_10
1N4148
U1_1C
NJM4580L
C1_42
470uF/35V
Q1_1
R1_62
R1_22
R1_1
1K8
V1+
84
V1-
R1_25
22R 1W
TP1_3
TP1_6
R1_32
22R 1W
U1_2C
NJM4580L
U1_4
LM317T
12
R1_26
0.22 5W
Q2_3
Q2_4
0.22 5W
0.22 5W
Q1_5 Q1_6 Q1_7 Q1_8
R1_28
R1_27
6x2SA1943
16x470uF/160V
C1_15
C1_17
D1_13
C1_13
3.3nF/50 cer
GND1
C1_14
3.3nF/50 cer
470uF/160V
C1_16
1N4148
C1_40
22nF/100V poly
D1_14
1N4148
C1_18
6x2SC5200
Q1_9 Q1_10 Q1_11 Q1_12
R1_33
R1_34
0.22 5W
C1_44
100nF/50 cer
R1_35
0.22 5W
C1_43
10uF/63
0.22 5W
R1_3
NTC 100R
R1_2
150R
R1_29
0.22 5W
C1_19
C1_20
R1_36
0.22 5W
D1_28
1N4004
R1_30
0.22 5W
C1_21
C1_23
R1_23
1K5 5W
R1_24
1K5 5W
C1_22
C1_24
Q1_13
R2_37
0.22 5W
FAN OUT CH1
+12V
JP1_14
2P2.5
2
1
FAN
R1_31
0.22 5W
GND1
C1_25
OUTPUT STAGE_A
C1_26
Q1_14
R2_38
0.22 5W
D1_15
1N5402
C1_27 C1_29
C1_28 C1_30
GND1
D1_16
1N5402
+83V_A
1 2
1 2
-83V_A
GND1
K1_1
R1_39
5R6 2W
L1_1
2uH 10A
R1_40
12R 5W
GND1
5mm RED LED
Q1_15
MPSA92
D1_19
W2 -0 4
(1.5A 200V)
R1_44
6K8 1W
R1_41
12R 5W
C1_31
68nF/250V poly
CH1 BILED1
D1_17
R1_42
330K
Q1_16
MPSA92
R1_43
100K
RELAY VBS SERI ES
D1_23
1N4004
ON/PROTECTION
R1_46
100K
R1_47 47K
D1_20
1N4004
R1_48
330K
C1_32
10uF/63
R1_45
1K5
RELAY POWER1
CH1 OUTPU T
GND1
D1_18
ZD7V5 1/2W
CH1 BILED2
C1_33
47uF/63V
C1_ 34
220uF/16V NP
D1_22
1N4004
GND1
R1_63
1K 3W
CN-P CB6. 3
CH1 OUTPUT
SPEAKON PCB
JP1_2
CN-P CB6. 3
+83V_A
R1_49
10K 5W
R1_50
PTC 65R
100R/10K
Q1_17
MPSA42
TURN ON DELAY
D1_21
ZD36V 1W
JP1_1
MISTRAL4000 Schematic Diagram 1 of 2
CH2 AMPLIFIER
MIS40-CH2.S CH
Titel
ALTO MISTRAL4000-CH1 DRIVE
PCB# MIS4000.PCB
Size
A2
MISTRAL4000
29-Apr-2004
Date:
File:
MIS40-CH1.Sch
Sheet
Drawn By:
1
2
TO
1
2
RevisionModel No:
KEVIN LIN.
D
1+
1-
C
B
A
VER031212
21 of
CH1 INPUT
J1_1
J1_2
R1_53
8K2
(CH1 LIMITER MODE)
1
3
2
2
3
1
GND1
V1+
C1_35
56pF/50 cer
2
3
GND1
NJM4560L
(1.5A 200V)
S1_1A
3
1
GND1
2 1
SW 2C_2P
CH1 I N-
CH1 I N+
FCT TAUD6 00
(OPTION)
D1_25
1N4004
2
5
4
T1_1
GND1 GND1
CH1 INSERT CONNECTOR
R1_54
10K
1
U1_2A
D1_24
W2 -0 4
2
J1_4
3P2.5
GND1
1
3
J1_5
3P2.5
1 2
3 4
5 6
7 8
9 10
JP1_3
HEADER 5X2
-V_FAN_CH1
VAC FAN1-CH1
6
5
GND1
U1_2B
NJM4560L
R1_52
47R
C1_37
220uF/16V
CH1 CLI P+
R1_9
100R
GND1
CH1 CLI P-
C1_1
RB1_1A
6
9
7
8
22uF/50V
22uF/50V
4x10K
RB1_1C
4x10K
C1_2
C1_4
100pF/50 cer
CH1 INSERT IN
CH1 I NSE RT OUT
D1_26
2 1
1N4004
BRIDGED
6
4
NORMAL
GND1 GND1
HEADER 5X2
7
R1_55
330R
(FTR VT90N1 VACTEC+)
CH1 PHOTO COUPLER
D1_2
W2 -0 4
(1.5A 200V)
2
3
RB1_1D
4x10K
GND1
GND1
47uF/35V
V1-
S1_1B
SWITCH 2C_2P
5
1 2
3 4
5 6
7 8
9 10
JP1_15
-83V_A
+83V_A
CH1 BILED1
CH1 CLI P+
R1_57
100R
U1_5
VTL5C2
41
2 3
GND1
C1_3
100pF/50 cer
RB1_1B
4x10K
1
U1_1A
NJM4560L
C1_6
3
2
1
R1_5
3P-2.5
CH1 GAIN
CH1 BR IDGE S WITCH
FAN OUT CH1
VAC FAN2-CH1
56pF/50 cer
C1_5
47uF/35V
C1_36
GND1
GND1
R1_7 4K7
R1_6
4K7
R1_56
82K 1/2W
R1_51
100K
GND1
R1_8
10K
1 2
3 4
5 6
7 8
9 10
JP1_16
HEADER 5X2
CH1 P ILOTLIM
56pF/50 cer
6
5
U1_1B
NJM4560L
R1_10
V1+
C1_7
R1_13
68R
C1_38
1.5nF/250 cer
ZD15V1.3W
V1-
330R
GND1
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
JP1_5
CN-P CB6. 3
2
1
RECTIFIER BRIDGE1+
JP1_6
CN-P CB6. 3
2
1
COM1
JP1_7
CN-P CB6. 3
2
1
RECTIFIER BRIDGE1-
JP1_8
CN-P CB6. 3
2
1
AC INPUT
1 2 3 4 5 6 78
OUTPUT STAGE_A
RELAY POWER1
JP1_9
JEF-505
1
2
JP1_11
JEF-505
1
2
FUSE1-1
FUSE1-2
6.3x32 FUSE HOLDER
10AT
10AT
JP1_10
JEF-505
1
2
JP1_12
JEF-505
1
2
+83V_A
-83V_A
JP1_13
HEADER 3
7654321
7
8
D
C
XLR FEMALE90
XLR MALE90
(PARALLEL OUTPUT)
B
A
R2_58
68K 1/2W
CH2 BILED2
CH2 CLI P-
+15V
D2_1
ZD15V1.3W
GND2
7
C2_12
N/C
GND2
D2_4
-15V
C2_10
27pF/50 cer
R2_11
15K SPEAKERS BUS
C2_9
0R
3
2
1
C2_8
220uF/25V
C2_11
560pF/50 cer
R2_17
NTC 50R
C2_45
220uF/25V
1
4
3
R2_15
4K8 10W
R2_14
820R
D2_7
ZD5V6 1/2W
D2_5
1N4936
D2_6
1N4936
R2_16
TRIMMER 100R
R2_18
820R
D2_8
ZD5V6 1/2W
R2_19
4K8 10W
V2+
84
V2-
VAC FAN1
D2_27
W2 -0 4
(1.5A 200V)
2
-V_FAN_CH2
VAC FAN2
D2_9
1N4148
MJE15032
D2_11
0R
5R6 1W
R2_21
TRIMMER 2K2
5R6 1W
R2_20
TRIMMER 2K2
D2_12
0R
Q2_2
MJE15033
D2_10
1N4148
U2_1C
NJM4580L
C2_42
470uF/35V
Q2_1
R2_62
R2_22
R2_1
1K8
V2+
84
V2-
R2_25
22R 1W
TP2_3
TP2_6
R2_32
22R 1W
U2_2C
NJM4580L
U2_4
LM317T
12
R2_26
0.22 5W
Q2_3
Q2_4
0.22 5W
0.22 5W
Q2_5 Q2_6 Q2_7 Q2_8
R2_28
R2_27
6x2SA1943
12x470uF/160V
C2_15
C2_17
D2_13
C2_13
3.3nF/50 cer
GND2
C2_14
3.3nF/50 cer
470uF/160V
C2_16
1N4148
C2_40
22nF/100V poly
D2_14
1N4148
C2_18
6x2SC5200
Q2_9 Q2_10 Q2_11 Q2_12
R2_33
R2_34
0.22 5W
C2_44
100nF/50 cer
R2_35
0.22 5W
C2_43
10uF/63
0.22 5W
R2_3
NTC 100R
R2_2
150R
R2_29
0.22 5W
C2_19
C2_20
R2_36
0.22 5W
D2_28
1N4004
R2_30
0.22 5W
C2_21
C2_23
R2_23
1K5 5W
R2_24
1K5 5W
C2_22
C2_24
Q2_13
R2_37
0.22 5W
FAN OUT CH2
+12V
JP2_14
2P2.5
2
1
FAN
R2_31
0.22 5W
GND2
C2_25
OUTPUT STAGE_B
C2_26
Q2_14
R2_38
0.22 5W
D2_15
1N5402
C2_27 C2_29
C2_28 C2_30
GND2
D2_16
1N5402
+83V_B
K2_1
RELAY VBS SERI ES
CH2 OUTPU T
R2_39
5R6 2W
1 2
L2_1
1 2
-83V_B
2uH 10A
MPSA92
D2_19
W2 -0 4
(1.5A 200V)
GND2
R2_40
12R 5W
C2_31
68nF/250V poly
GND2
CH2 BILED1
D2_17
5mm RED LED
Q2_15
MPSA92
R2_44
6K8 1W
R2_41
12R 5W
R2_42
330K
Q2_16
R2_43
100K
D2_23
1N4004
ON/PROTECTION
R2_46
100K
D2_20
1N4004
C2_32
10uF/63
R2_45
1K5
RELAY POWER2
R2_47 47K
R2_48
330K
GND2
D2_18
ZD7V5 1/2W
CH2 BILED2
C2_33
47uF/63V
C2_ 34
220uF/16V NP
D2_22
1N4004
GND2
+83V_B
Q2_17
MPSA42
TURN ON DELAY
D2_21
ZD36V 1W
R2_63
1K 3W
MISTRAL4000 Schematic Diagram 2 of 2
Titel
ALTO MISTRAL4000-CH2 DRIVE
PCB# MIS4000.PCB
Size
Date:
File:
A2
MISTRAL4000
29-Apr-2004
MIS40-CH2.Sch
Sheet
Drawn By:
JP2_1
CN-P CB6. 3
1
2+
2
CH2 OUTPUT
TO
SPEAKON PCB
1
2-
2
JP2_2
CN-P CB6. 3
R2_49
10K 5W
R2_50
PTC 65R
100R/10K
RevisionModel No:
VER031212
21 of
KEVIN LIN.
D
C
B
A
CH2 LIMITER MODE
CH2 INPUT
1
3
2
J2_1
2
3
1
J2_2
V2+
R2_53
8K2
GND2
(CH1 LIMITER MODE)
CH2 I N-
CH2 I N+
FCT TAUD6 00
(OPTION)
GND2
2 1
D2_25
1N4004
GND2
R2_54
10K
R2_52
47R
1
2
GND2
1
6
9
7
8
3
1 2
3 4
5 6
7 8
9 10
JP2_3
HEADER 5X2
CH2 BR IDGE
-V_FAN_CH2
VAC FAN1
6
5
22uF/50V
22uF/50V
C2_35
56pF/50 cer
2
3
U2_2A
NJM4560L
D2_24
W2 -0 4
(1.5A 200V)
S2_1A
3
1
SW 2C_2P
J2_4
3P2.5
GND2
2
5
4
T2_1
J2_5
3P2.5
GND2 GND2
CH2 INSERT CONNECTOR
7
U2_2B
NJM4560L
R2_55
330R
C2_37
220uF/16V
(FTR VT90N1 VACTEC+)
CH2 PHOTO COUPLER
CH2 CLI P+
R2_9
100R
GND2
1 2
3 4
5 6
7 8
9 10
JP2_15
W2 -0 4
(1.5A 200V)
2
3
RB2_1D
4x10K
GND2
V2-
S2_1B
SWITCH 2C_2P
5
CH2 CLI P-
C2_1
RB2_1A
4x10K
RB2_1C
4x10K
C2_2
C2_4
100pF/50 cer
CH2 INSERT IN
CH2 I NSE RT OUT
D2_26
2 1
1N4004
BRIDGED
6
4
NORMAL
GND2 GND2
HEADER 5X2
-83V_B
+83V_B
R2_57
100R
U2_5
VTL5C2
41
D2_2
C2_3
100pF/50 cer
RB2_1B
4x10K
C2_6
47uF/35V
CH2 GAIN
CH2 BILED1
CH2 CLI P+
56pF/50 cer
2 3
GND2
C2_5
47uF/35V
1
U2_1A
NJM4560L
3
2
1
R2_5
3P-2.5
CH2 LIMITER MODE
FAN OUT CH2
VAC FAN2
C2_36
GND2
GND2
R2_7 4K7
R2_6
4K7
R2_56
82K 1/2W
R2_51
100K
GND2
R2_8
10K
1 2
3 4
5 6
7 8
9 10
JP2_16
HEADER 5X2
CH2 P ILOTLIM
56pF/50 cer
6
5
U2_1B
NJM4560L
R2_10
V2+
C2_7
R2_13
68R
C2_38
1.5nF/250 cer
ZD15V1.3W
V2-
330R
GND2
TO USE ONLY CH2 PUT JUMPER ON PIN 6&8
JP2_5
CN-P CB6. 3
2
1
RECTIFIER BRIDGE2+
JP2_6
CN-P CB6. 3
2
1
COM2
JP2_7
CN-P CB6. 3
2
1
RECTIFIER BRIDGE2-
JP2_8
CN-P CB6. 3
2
1
AC INPUT
1 2 3 4 5 6 78
OUTPUT STAGE_B
RELAY POWER2
JP2_9
JEF-505
1
2
JP2_11
JEF-505
1
2
FUSE2-1
10AT
FUSE2-2
6.3x32 FUSE HOLDER
10AT
JP2_10
JEF-505
1
2
JP2_12
JEF-505
1
2
+83V_B
-83V_B
JP2_13
HEADER 3
D
8
C
B
A
VER030504
11of
KEVIN LIN
RevisionModel No:
4
Drawn By:
Sheet
K2_2
3 4
5 6
7 8
RELAY-2-24
1 2
C2_46
470uF/35V
12
MISTRAL4000
R2_67
R2_69
12R 5W
12R 5W
R2_68
R2_70
12R 5W
12R 5W
(AC_2)
COM1
BRIDGE1+
321
BD1
35A/200V
BRIDGE1-
BD2
BRIDGE2+
35A/200V
COM2
COM
AC_1
BRIDGE2-
R2_72
12R 5W
R2_71
12R 5W
TRANS-IN
D2_31
1N4004
R2_74
2K7 5W
R2_73
2K7 5W
SWITCH
1
2
P7
CN-PCB6.3
NEUTRAL
2
P8
ALTO MISTRAL4000 POWER BOARD
PCB# MIS40PWR.PCB
9-Apr -2004
MIS40PWR.Sch
A4
Titel
Size
File:
Date:
1
CN-PCB6.3
63V
P1
115V or 120V
1
2
P2
CN-PCB6.3
63V0V63V
1
2
CN-PCB6.3
TRANS-IN
0V
0V
63V
13.5V
0V
1. COMPONENTS WITH ARE SAFETY CRITICAL PARTS.
PT-MIS4000-E
T130℃
115V or 120V
1
2
1
P3
2
P4
CN-PCB6.3
P5
CN-PCB6.3
T130℃
0V
1
2
1
2
P6
CN-PCB6.3
CN-PCB6.3
CIRCUIT BRE AKER
USA:15A-125V
NEUTRAL
EUROPE:8A-230V
POWER SWITCH
1 2 3 4
LINE
GND
NEUT
IEC AC INLET
D
C
B
A
D
9
C
B
A
VER030710
11of
C.C.LIN
RevisionModel No:
4
Drawn By:
Sheet
2
MISTRAL4000
2
D1_30
1 2
321
D2_30
1 2
3mm YELLOW LED
3mm YELLOW LED
D1_3
LIMITER
LIMITER
1 2
D2_3
1 2
D1_29
CLIP
3mm RE D LED
D2_29
CLIP
3mm RE D LED
POWER ON
3mm BL UE LE D
1 2
POWER ON
3mm BL UE LE D
1 2
RED
D1_1
RED
D2_1
GREEN
1
1
2
2
GREEN
1
1
JP1_22
1 2
3 4
5 6
7 8
9 10
3mm R/G BLCOL LED
ON/PROTECTION
JP2_22
1 2
3mm R/G BLCOL LED
ON/PROTECTION
3 4
HEADER 5X2
5 6
7 8
9 10
HEADER 5X2
ALTO : MIST RAL4000 FP
9-Apr -2004
MIS40FP.Sch
A4
Titel
Size
File:
Date:
VR1_1
B50K
123
CN1_1
D
3P2.5
CN2_1
C
VR2_1
B50K
123
3P2.5
B
A
1 2 34
D
10
C
B
A
VER031206
11of
C.C.LIN
RevisionModel No:
4
Drawn By:
Sheet
MISTRAL4000
ALTO : MIST RAL4000 INPUT
9-Apr -2004
MIS40IN.Sch
A4
Titel
Size
File:
Date:
321
CN4
123
CN2
CON3
CN3
12345
CON5
123
CON3
123
CN1
CON3
PJ1
PHONEJACK2
1 2 34
D
C
B
A
MISTRAL4000 Chassis Wiring Drawing (100V-130V)
4. Wiring Diagram
11
7654321
8
D
D
OUT1GND1OUT2GND2
GRAY
HA01258
HA02471
RED
PURPLE
BLACK
HA02449
WHITE
WHITE
GRAY
BLUE
BLACK
HA01198
HA01244
HA01239
HA01237
JP1_1
(CH1_OUT)
JP1_2
(GND1)
JP1_13
JP1_14
JP1_7
R1_5
R2_5
JP2_1
(CH2_OUT)
JP2_2
(GND2)
JP2_13
JP2_14
JP2_7
C
HA01333
P8
P6
AC
AC
P5
P4
C
P3
AC
P1
P2
P7
AC
RED
GREEN
WHITE
HA02488
HA01321
HA01243
YELLOW
PURPLE
B
JP1_5
PT-MIS4000-E
HA02469
HA02470
HA02451
HA02450
A
CN1_1 CN2_1
JP1_22 JP2_22
(BRIDGE+)
JP1_6
(COM1)
JP1_8
(AC_1)
JP1_16 JP2_16
JP2_5
(BRIDGE+)
JP2_6
(COM2)
JP2_8
(AC_2)
B
A
VER030613
DRAWING BY KEVIN LIN.
1 2 3 4 5 6 78
MISTRAL4000 Chassis Wiring Drawing (220V-240V)
12
7654321
8
D
D
OUT1GND1OUT2GND2
GRAY
HA01258
HA02471
RED
PURPLE
BLACK
HA02449
WHITE
WHITE
GRAY
BLUE
BLACK
HA01198
HA01244
HA01239
HA01237
JP1_1
(CH1_OUT)
JP1_2
(GND1)
JP1_13
JP1_14
JP1_7
R1_5
R2_5
JP2_1
(CH2_OUT)
JP2_2
(GND2)
JP2_13
JP2_14
JP2_7
C
HA01333
P8
P6
AC
AC
P5
P4
C
P3
AC
P1
P2
P7
AC
RED
GREEN
WHITE
HA02488
HA01321
HA01243
YELLOW
PURPLE
B
JP1_5
PT-MIS4000-E
HA02469
HA02470
HA02451
HA02450
A
CN1_1 CN2_1
JP1_22 JP2_22
(BRIDGE+)
JP1_6
(COM1)
JP1_8
(AC_1)
JP1_16 JP2_16
JP2_5
(BRIDGE+)
JP2_6
(COM2)
JP2_8
(AC_2)
B
A
VER030613
DRAWING BY KEVIN LIN.
1 2 3 4 5 6 78
5. PCB Layout
MIS40FP2
Bottom layer
Top overlay
MIS40PWR
Bottom layer
Top overlay
13
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