Alto DPA-4000, DPA-2500 Service Manual
MODEL:DPA 2500/4000
www.altoproaudio.com
Version 2.0
CONTENTS
1. Introduction…………………………………………………………….2
2. Specification…………………………………………………………....3
3. Schematic Diagram……………………………………………………4
4. Wiring Diagram………………………………………………………..17
5. PCB Layout…………………………………………………………….19
6. Test Procedure & Test Result………………………………………25
7. Exploded Views & Mechanical Part List………………………….30
8. BOM…………………..…………………………………………………33
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. Air flow is from back to front
panel to keep in a nice air circulation inside the Rack. The automatic fan, which affects machines’
temperature 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, 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.
z Innovative design and high stability power amplifiers.
z Fan-cooled AB class high power amplifier in 19”rack, 2Usize
z Rugged amplifiers in a strong, compact chassis.
z 2 independent channels with separate protection system and power supply
z smart-designed protection system for auto re-operation after fault.
z Auto-adjusting speed fan.
z 4LEDs for operation/protection, limit, power on and clip
z HIGH-CURRENT TOROIDAL TRANSFORMER DESIGNED FOR HIGH POWER AT 2
Ohms with low noise.
z Independent DC and thermal overload protection on each channel.
z IEC standard power connectors.
z Binding post and NEUTRIK® SPEAKON outputs power connectors.
z Balanced XLR inputs/ parallel outputs.
2
2. Specification
Output power DPA2500 DPA 4000
20Hz-20KHz @0.1% THD, SCD MODE
8Ohms per channel(EIAJ) 450W 625W
4Ohms per channel (EIAJ) 700W 1000W
Bridge MONO mode
8Ohms ,1KHz, 0.1% THD 1400W 2000W
Distortion (SMPTE-IM) <0.05%
Frequency response 20Hz-20KHz=/-0.1dB, -3dB points:10Hz-60Hz
Damping factor ,1 kHz and below >300 at 8 Ohms
Signal to noise ,20Hz`20KHz 102dB
Voltage Gain 40 Χ(32dB)
Input sensitivity @4Ohms 1Vrms
Input clipping 10Vrms(+22dB)
Input impedance 10kOhms unbalanced, 20k Ohms balanced 56(36dB)
Controls
Front :AC switch ,CH1&CH2 Gain knobs
Rear :Limiter bridge selector
Power-on : Blue LED
Indicators (1per channel)
Operation/Protection: Dual Color(green/red LED)
Limit: Red LED
Clip: Red LED
Input: Active balanced XLR
Connectors, each channel
Parallel output: XLR
Output: NEUTRIK speaker 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
19”(48.3cm) rack mounting, 3.5”(8.9cm) tall (2rackspaces)
15.9”(40cm)deep (rack mounting to rear support ears
weight 18.1kg (Net) 20.5kg (Net)
3
)
7654321
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
4xTR-93P(ALTO)
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
4xTR-94N(ALTO)
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 OUTPUT
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
9-Apr-2004
MIS25-CH1 Sch
Sheet
Drawn By:
1
2
TO
1
2
RevisionModel No:
KEVIN LIN
D
1+
1-
C
B
A
VER031212
21of
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
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
3
2
1
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
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
4xTR-93P(ALTO)
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
4xTR-94N(ALTO)
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 OUTPUT
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
9-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
21of
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
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
5xTR-93P(ALTO)
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
5xTR-94N(ALTO)
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 OUTPUT
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
9-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
21of
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
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
3
2
1
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
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
5xTR-93P(ALTO)
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
5xTR-94N(ALTO)
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 OUTPUT
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
9-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
21of
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
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 LED
1 2
POWER ON
3mm BL UE LED
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
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
D
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
BRIDGE2-
AC 1
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
C
B
A
11of
VER030728
C C LIN
RevisionModel No:
4
Drawn By:
Sheet
CN2
9
1011121314151617181920
R2
4K7
R4
10K
TR2
BC560
5
4
3
2
1
CN3
CON5
5
321
R1
4K7
R3
+5VD
10K
TR1
BC560
4
3
2
1
CN4
CON5
+5VD
R6
10K
R5
10K
R7
10K
+5VD
R8
10K
2345678
GND
CN-HD10X2
DPA4000
DL11
SIGNAL
ALTO : DPA4000 Display Board 1
Titel
12-Apr-2004
DPA-DIS S ch
A4
Size
File:
Date:
RED GR
SW2
ENTER
SW1
UP
SW3
DOWN
GND
SW4
SELECT
C1
100N
+5VD
GND 1
DL1
DL4
DL5
DL6
DL7
DL10
VOL UME
HUM CANCEL
NOISE GATE
MULTICOMP
PRESETS
COMM
14
CN1
12345678910111213
DL8
DL9
EDIT
CH SEL
CN-HD7X2
GND
C2
10uF/16V
1 2 34
D
C
B
A
D
C
B
A
11of
VER030728
C C LIN
RevisionModel No:
4
Drawn By:
Sheet
DPA4000
12-Apr-2004
DPA-DIS2 Sch
ALTO : DPA4000 Display Board 2
A4
Titel
Size
File:
Date:
5
4
3
2
321
1
CN1
CON5
5
4
3
2
1
CN2
CON5
DL3
LED-7SEG-2
dp
5
g
A2
8
A1
3
DL2
LED-7SEG-2
A2
8
A1
3
10
f
9
e
1
d
2
c
4
b
6
a
7
dp
5
g
10
f
9
e
1
d
2
c
4
b
6
a
7
1 2 34
D
C
B
A
A
VER030728
11of
C C LIN
Revisio nModel No
Drawn By
Sheet
135
4
6
B
7291113
8
10
RELE
J7
12
16234
14
5
D
8
135791113
J3
2144106128
151719
182016
R12
1K5
R14
1K5
R16
1K5
C
R19
1K5
R22
1K5
R24
1K5
R26
J5
1K5
R28
1K5
DPA4000
R21
7654321
TO DSP Board
R13
1K5
R15
1K5
R17
1K5
R18
1K5
1K5
12-Apr-2004
TO DSP Board
TO DSP Board
R20
1K5
R23
1K5
R25
1K5
R27
1K5
R29
1K5
Titel
DPA PWR.Sch
ALTO DPA4000 -DSP_PWR
A4
Size
File
Date
TO RS-XXX Board
TO Display Board
2144106128
J2
13579
GND
5VD
182016
11
13
151719
TO Display Board
J4
135
8
4
10
6
729
GND
12
14
1627384
11
J6
13
GND
5VD
5
123
CN2
CON3
GND
D3
SF1BD4SF1B
D5
7805
Vin
Vout
GND
CN3
5VD
C8
C10
C12
-5VD
12345
SF1BD2SF1B
1000/25C91000/25
10/16
C11
10/16
100N
C13
100N
GND
5VD
6
CN-6P-90
GND
C14
100N
C15
100N
4 8
U1C
MC33078
4 8
U2C
MC33078
U4
7905
Vin
GND
Vout
-5VD
GND
TO DSP Board
-5VD
1 2 3 4 5 6 78
J1
TO DSP Board
1
U1A
22P
C2
R2
750R
2
R1
10K
C1
10/16
TO AMP Board
D8
1627384
5
AGND
R5
2K2
7
U1B
22P
MC33078
C4
R4
AGND
CN1
750R
6
R3
C3
10/16
1 2
3 4
5 6
7 8
3
10K
9 10
5
MC33078
HEADER 5X2
C5
AGND
AGND AGND
3
2
U2A
AGND
MC33078
1
RL1
R9
1K
22P
R6
10K
5VD
RELAY-2-24
D1
C7
C6
1N4148
100N
R7
2K2
5
6
U2B
7
AGND
AGND
MC33078
RELE
R10
10K
R11
10K
GND
Q2
BR15
GND
22P
R8
10K
U3
5VD
D
C
B
A
D
C
B
A
12345678910
VER030728
11of
C C LIN
CN1
4
S1
RS485-LINK
S2
213
4
RS485
213
4
R1R2
+5VD+5VD
L4
HEADER 5X2
C1
100N
L3
INDU1
INDU1
L5
INDU1
DGND
RevisionModel No:
Drawn By:
Sheet
DPA4000
L1
INDU1
L2
INDU1
IC2A
R3
10R0
R4
10R0
D1
1N4740/6V8/1W
D3
1N4740/6V8/1W
S3
TP-2
D2
1N4740/6V8/1W
D4
1N4740/6V8/1W
CN2
1234567
+5VD
6
74
321
Ro
IC1A
De
3
1
2 Re
TRANSCEIVER
Di
MAX485E
1312
MAX202E
MAX202E
R
T
IC2C
11 14
T
IC2B
10 7
CN-HD4X2
8
MAX202E
IC2D
DGND
98
R
MAX202E
ALTO : DPA4000 RS_BOARD
Titel
DGND
12-Apr-2004
DPA-RS Sch
A4
Size
File:
Date:
C3
47u/16V
C5
100N
C4
100N
C8
100N
C7
100N
45
6
16
IC2E
MAX202E
13
C6
100N
C2
100N
85
C1B
MAX485E
2
15
1 2 34
D
C
B
A
DPA2500/4000 Chassis Wiring Drawing (100V-130V)
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
HA01247
HA01333
P8
P6
AC
AC
CN2
J6
P5
J4
P4
C
P3
AC
P1
P2
P7
AC
J2
RED
HA02488
GREEN
WHITE
HA01321
HA01243
YELLOW
PURPLE
B
JP1_5
PT-DPA4000-E
HA02469
HA02470
HA02451
HA02450
A
CN1_1 CN2_1
JP1_22 JP2_22
CN1CN2
(BRIDGE+)
JP1_6
(COM1)
JP1_8
(AC_1)
JP1_16 JP2_16
JP2_5
(BRIDGE+)
JP2_6
(COM2)
JP2_8
(AC_2)
B
A
1 2 3 4 5 6 78
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