LTO MAC2.2 MKII User manual

www.altoproaudio.com
Version 2.0
MODEL: MAC2.2/2.3 MKII
Revised on Dec,2009

CONTENT
1. Introduction……………………........………………………….....……………………………….…1
2. Specification………………….............……………………………………………………………...2
3. Block Diagram………………………………………………………….............……………………3
4. Schematic Diagram………………………………………………………………...........………….4
5. PCB Layout………………………………………………………………………………............…10
6. Exploded view & Mechanical Parts List…………………………………………………….........14
7. BOM List…………………………………………………………………………………….............17

MAC2.2/2.3MK II is highly effective AMP with high power, providing balanced input, Barrier strip for
SP output as well as STEREO/PARALLEL/BRIDGE/LIMT/30HZ filter functions. The users can choose
the respective inner protection measures and power supply to avoid high temperature and short circuit.
2U body, big professional stereo power amplifier. Wonderful tone quality and great volume level. Hard
appearance and durable, it can be installed in cabinet or as a solo one.
The amplifier power:
MAC2.2MK II:
stereo output :350W*2(4ΩRMS), 750W*2(2ΩEIAJ), 230W*2(8Ohms RMS);
bridge output: 710W(8ΩRMS), 1500 W(4ΩEIAJ)
MAC2.3MK II:
stereo output :1000W (2 ΩEIAJ), 510W (4ΩRMS), 285W(8ΩRMS);
bridge output: 1000W (8ΩRMS), 2200 W (4ΩEIAJ)
Many controls on the rear panel:
The clip limiter SW
The filter switch: 30HZ
Stereo/Double-single /Parallel or Bridge operation modes
Separate balanced signal input.
Connect speaker cable to output terminal of rear panel
Signal, clip, protection, power LED on the panel
Each channel has separate DC, heat protection and over-load circuit, protecting the amplifier & speaker
1. Introduction
--- 1 ---

POWER SPECIFICATIONS MAC2.2 MAC2.3
2 Ohms(EIAJ) 750W×21000W
4 Ohms(RMS) 350W×2510W
Stereo Mode
(Both channels driven)
20Hz—20KHz 8 Ohms(RMS) 230W×2285W
8 Ohms(RMS) 710W 1000WBridge Mono Mode
20Hz—20KHz 4Ohms(EIAJ) 1500W 2200W
ELECTRICAL SPECIFICATIONS
INPUT SENSITIVITY 1.15V(+3.4dBu)
INPUT IMPEDANCE 10kΩUnbalanced 20kΩBalanced
FREQUENCY RESPONSE
at 10dBbelow rated output power
25Hz—25KHz +0/-1 dB
-3dB points:5 Hz—50KHz
VOLTAGE GAIN 30dB 32dB
DISTORTION(SMPLE-1M) ﹤0.03% ﹤0.03%
S/N ration 100dB 100dB
GENERAL SPECIFICATIONS
PROTECTIONS
Full short circuit,open circuit,thermal,ultrasonic,and
RFprotection stable into reactive or mismatched
loads,turnON/OFF,muting,tried crowbar
CONTROLS
Front:AC switch,Input level control for each channel
Rear:stereo/parallel/bridged selector,30Hz filter
selector clip ON/OFF selector
INDICATIORS SIGNAL:2 green LEDs CLIP:2 red LEDs
POWER:1 blue LED PROTECTION:1 red LED
CONNECTORS INPUT:Active balanced XLR and 1/4”(6.3mm)TRS
OUTPUT:touch-proof binding posts and speakon
jacks
POWER SUPPLY Available for 110-120V or 220-240V AC,50/60Hz
DIMENSIONS 483(W)*460(D)*88.8(H)mm
WEIGHT 13.6kg 15.6kg
2. Specification
--- 2 ---

1234
A B C D
4321
D C B AMAC2.2/2.3MKII SYSTEM BLOCK DIAGRAM
Titel
Size
A3 Model No:
MAC2.2/2.3MKII Revision
Date: 02-Nov-2007 Sheet of
1 1
File: Drawn By: JJZ
XLR
CH.A INPUTS
PREAMP
XLR
CH.B INPUTS
PREAMP
CH.B OUTPUTS
SIGNAL SMART
STEREO: INPUT ATO CH.A.INPUT B TO CH.B BRIDGE INPUT A TO MONO BRIDGED PARALLAE INPUT A TO MONO
SENSITIVITY PROTECTION
CH.A SPKR
OUT
SENSITIVITY PROTECTION
PROTECT
CH.B SPKR
OUT
MAC2.2/2.3MKII SYSTEM BLOCK DIAGRAM
BRIDGE
SIN PROTCLIP
SIN PROTCLIP
CH.B PWRAMP
CH.A PWRAMP
CH.A OUTPUTS
MAC2.2/2.3MKII (1/1)方框圖
PROTECT
VER071102
AC2.2/2.3MKII方框圖
3. Block Diagram3. Block Diagram
--- 3 ---

1234
A B C D
4321
D C B AMAC2.3MKII VRL
Titel:
Size:A4 Model No: MAC2.2/2.3MKII Revision:
VER071102
Date: 02-Nov-2007 Sheet: of
1 1
File: Drawn By: JJZ
GNDD
GND S1B S2B S3B
S1A
GA
GB
TO AMP CHA
S2A
SINA
S2B
PA
TO AMP CHB
S1B S2B S2B
S3B
13
2
VR1 10K
13
2
VR2 10K
LED2
PR RED
GND
GA GND
SINB PB
S2A
S3B GB GND
1 2 3 4
CN4 CON4P
1 2 3 4
CN5 CON4P
+12V
S2A
+15V
S2A
GND1
S1A
SLA
GA
GB
+12V
GND
R13 10K
LED1 power led
GND
SLA
SLB
SLA
SLB
R1 20K
R2 20K
GA
TO INPUT
1 2 3
CN1
1 2 3 4
CN2
1 2
CN3
J1 10
Q1 C1815
Q3 C1815
Q2
C1815
C1
10UF
C2 1UF
R9 1M R11 68K
R14 1k
R17
4.7K
R6 2.2k
R26 51K
R25 10k
D1
IN4148
D2
IN4148
R8 2.2k
R21 4.7k
Q4 C1815
R15 1k
Q6 C1815
R12 68k R10 1M
C4 1UF/25V
C3
10UF/25V
LED4 SIG GRN
LED3
CLIP RED
LED5 SIG GRN
GND
GND
GND
GND GND
R4 8.2K
R3 8.2K S3B
+12V
GB
R44 100R
R7 4.7K
R18 4.7K R22
3.9K
Q7
2N5401
C5 1UF
GND
D5
IN4148
Q5
C1815
R16 51K
12
R5
10k
LED6 CLIP RED
GND
R24 100R
R19 4.7K
R20 4.7K R23
3.9K
Q8
2N5401
C6 1UF
GND
D6 IN4148
S2A
SLB
C7 10UF
C8 10UF
J2 5
1 2
3
4
5
6
7
8
RY1
DC12V 8P
Q9 C1815
A K
D3 1N4148
+12V
GND
R40 10K
C9
10UF/50V
GND
R41 8.2K
GNDGND
MAC2.3MKII VRL_VER071102 (1/1)
MAC2.3MKII VRL.SCH
4. Schematic Diagram
--- 4 ---

1 2 3 4 5 6 7 8
A B C D
87654321
D C B A
MAC2.3MKII INPUT
Titel
Size A3 Model No:
MAC2.2/2.3MKII
Revision
VER071102
Date: 02-Nov-2007 Sheet 1 1
of
File: MAC2.3MKII INPUT.SCH Drawn By: JJZ
11 22
33
MIC1
HCSM-94M007P1
GND
R7
10K
R8 10K
R2 3.30K R6 3.30K
C2 470P C3 470P
GND GND
GNDGND
3 21
U1A
4580M
C18 22P
R9 10K
1
4 3 + _
5 2
11
8
7
6
U2A
LM13600
R28 39K
R43 100R
R42 100R
R30
8.20K
GND
C6 0.1
GND
+14V
R14 10K
R38 150K
R40 270
R16 0.0R
C7
0.1
C8 0.1
-14V
GND
Q1
2N3906
C22 10U
3
1
2
SW3A CILP
GND
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
SW1 BR
1 3 2
MIC4
HCSM-JY6351
1 2
3
MIC2
HCSM-94M007P1
GND
R19
10K
R20 10K
R17 3.30K R18 3.30K
C4 470P
C5 470P
GND GND
GND
5 67
U1B
4580M
C20 22P
R21 10K
16
13 14
+ _
12 15
9
10
U2B
LM13600
R29 39K
R45 100
R44 100
R31
8.20K
GND
+14V
R26 10K R39 150K
R41 270
R27 0.0R
C9 0.1
-14V
GND
Q2
2N3906
C25 10U
6
5
4
SW3B CILP
GND
3 2
1U4A
4580M
5 6
7U4B
4580M
GND
R1 10K
R4 10K
R5 0R
GND
C1 22P
R3 10K
GNDD S1B S2B S3B S1A +12V GND1
S2A G
R13 15K
C1922P
R12 10K
GND
C24 10U
7
6 5
+ _
U3B
4580M
R25 15K
C2122P
R24 10K
GND
C27 10U
4 8
U1C
4580M
4 8
U3C 4580M
4 8
U4C 4580M
C10 0.1 C11 0.1
C12 0.1 C13 0.1
1 2 3 4 5
CN4 CN-5P-90
+12V GND +15V GND -15V
GND
CH1 IN
CH2 IN
C36
100U
C37
100U
TO POWER
TO VRL
C29
0.15UF
R34
20K
R35 20K
C28
0.15UF
R32 4.7K
R10
2.2K
GND
C31
0.15UF
R36
20K
R37 20K
C30
0.15UF
R33 4.7K
R22
2.2K
GND
3 21
U3A
4580m
1 2 3 4 5 6 7
CN6
CN-7P-180 1
2 3 4 5 6 7
CN5 CN-7P-180
GND
1
3
5 6
4
2
SW2 FILTER
GND
S1F S2F
S3F S4F
S1F S2F S3F S4F
GND
+14V
-14V
1 2 3
CN1 CN-3P-180
GND
1 2 3 4
CN2
CN-4P-180
1 2
CN3
CN-2P-180
C34
45U/25V
C35 45UF/25V
R11 1.8K
GND
D1 IN4148
D3 IN4148
D2 IN4148
D4 IN4148
A K
LED1 LED-3
D5 IN4148
D6 IN4148
D7 IN4148
D8 IN4148
A K
LED2 LED-3
R15 1.8K
GND
R23 680R
R46 680R
1 2 3 4 5 6MIC3
HCSM-94M
C14 10UF
C15 10UF
MAC2.3MKII INPUT_VER071102 [1/1]
--- 5 ---

1 1
2 2
3 3
4 4
D D C C
B B
A A
BR1
BA3510
GND
1 2 3 4 5
CN1 CON5
GND
C21
Comment: 470uF/50V
C22 0.1
Vin
GND
Vout
U3 7815
C20
220UF/25V
C3
0.1/250V
C4
0.1/250V
C6
0.1/250V
C5 0.1/250V
F1 12A F2
12A
R6 0.22R/1W R5 0.22R/1W
R7
0.22R/1W
C16
470UF/50V
C17
470UF/50V
500W/350W/250W_POWER.SCH
Titel:
Size:
A4
Model No: Revision:
VER090828
Date: Sheet: 1 of 1
File: jianjun zhou
Drawn By:
2U500W_POWER.SCH
C14
0.1UF/100V
C15
0.1UF/100V
Vin
GND
Vout U2 7815 D12
IN5817 D11 IN5817
C18 220UF/25V C19 220UF/25V
+24V +15V -15V GND LED +15V LED
D13
IN5817
+13V GND1
1 2
P15
1 2
P20
1 2
P16
GND
1 2
P12
1 2
P13
1 2
P14
C8
10000UF/100V
C7
10000UF/100V
+VCC GND
-VCC
1 2 3 4 5
CN2
CN6P2.5
+24V
GND
RY-ON
+13V
GND1
D2IN4004
C13 0.1UF/100V
GND
RY-ON
1 2 3 4 5
CN3
CN6P2.5
+24V
GND
RY-ON
+13V
GND1
1 2 3 4 5
CN4 Comment: CN5P2.5
-15V
GND
+15V
+15VLED
LED
TO INPUT
TO CHA
TO CHB
+VCC
GND
-VCC
1 2
P17
1 2
P18
1 2
P19
+VCC
GND
-VCC
TO CHA TO CHB
1 2
P10
R3
NTC NP10R
R4 NTC NP10R
R1 2K7 10W
D1 1N4007
12
C2
470uF/50V
1 2
P2
1 2
P8
1 2
P11
1 2
P5
1 2
P7
1 2
P1
AC IN 115/230V C1
0.22UF/275V
1 2
P4
TD00713 PT-500W-115/230V
AC~115V
0
AC~115V
0
65V/6.8A 0 65V/6.8A 16V/1A 0 16V/1A 14V/1A 0
1 2
P6
TRANS-IN
TO SW
65V/6.8A 65V/6.8A
GND
2 1 3
45 K1
DC48V12-4P
Vin
GND
Vout U1 7915
GND
1 2
P21
GND 1
2
P22
GND
1 2
P9
2009/11/4
MAC2.3/2.2MKII/PSA3450/3600/3750/3900_V2
115V
115V
NEUTRAL
BAN BLU BLK
WHT
2.5 5P排線頭
PC250 PC250
PC250
RED BLK YEL
0 115/230V
BREAKER
AC SW
To link P15 To link P20 To link P16
!
AC IN
To link CN1
1 2
CN5 CN2P
2U/500W_AMP 2U/350W_POWER 2U/250W_POWER
C7,C8 10000UF/100V 6800UF/100V 4700UF/80V
1 2
P23
GND
D3
IN4004 D4
IN4004
D5
IN4004 D6
IN4004
D7
IN4004 D8
IN4004
D9
IN4004 D10
IN4004
2U/450W_POWER
6800UF/100V
2U500W_POWER_VER090828.SCH(1/1)
--- 6 ---

1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
D D C C
B B
A A
R1 6.2K
R2
20K
R3 10K
C15 10P
GND
C1
4.7uF/50V NP
Q13 2SC2240 Q14
2SC2240
Q15 A970 Q16
A970
Q3
Comment: MJE350
Q2
MJE350
Q4 MJE350
Q1 2N5401 Q9
2SC5200
Q7 Comment: MJE340
Q6
MJE340
Q27 2N5551
Q8
2SC4382
R38 47 R40
47
R37 47 R39
47
R42 6.8K
R41 6.8K
R16 1K
R15 1K R17 1K R18
1K
R19 300
R13 39k R14 39k
R20 300
D1 4148 D2 4148
AK
D3 4148 D4 4148
C8
22uF/100V
GND GND
C17
100uF/25V
R43 300
SGND
R4 10K
C16 10p
C3 221/1KV
C2
221/1KV
R11 100 R12 100
R21 68
R22
68
C4 Comment: 33P
C5 33P
C18 224
R44 820R R45 2.7K
R27 200
R28 200 Q32
2SA1668
Q33 2SA1943 Q34
2SA1943
Q10
2SC5200
R48
10R/3W
R50
0.22R/5W
R53
0.22R/5W
R51
0.22R/5W
R52
0.22R/5W
Q17 2N5551
Q18 2N5401
D12 4148 D13 4148
R47
680R
R46 680R
C20 102 C21 102
R25 15K
+VCC
R10 100
PRO
Q11 2SC5200
Q35 2SA1943
R55
0.22R/5W
R54
0.22R/5W
R26 15K
-VCC-70V
+70V
C10
470P/1KV
C11 470P/1KV
Q12 2SC5200
Q36 2SA1943
R57
0.22R/5W
R56
0.22R/5W
ZD1
27V 1N4750
ZD4
43V IN4755
GND GND
Q31
A1668
R23 4.7K
C6
22uF/100V
GND
Q5 C4832
R24 4.7K
C7
22uF/100V
GND
R49 10R/3W
2U500W/350W/250W-AMP.SCH
Titel:
Size: A3 Model No: Revision:
VER090828
Date: Sheet: 1 of 1
File: jianjun zhou
Drawn By:
R36
10R/3W
SGND
C13
0.1UF/250V
GND
C14 0.1UF/250V
GND
1 2P5
PC250
R77 1K
PRO
2 1 3
45 K1
DC24V-4P
D7 IN4007
R58 47R R60
47R R62
47R R64
47R
R59 47R R61
47R R63
47R R65
47R
TR1 J111
D10 IN4148
R33
100K
L1
2uH 10A
R74
10R/3W
1 2P1
+VCC
1 2P2
GND
1 2P3
-VCC
GND
1 2 3 4
CN1
CON4
GND +24V +13V-FAN
RY-ON
GND1
1 2 3 4 5
CN2
CON5
R70
4.7R/3W
C24
104\250V
GND
Q26 2N5551 Q39 HIT667
GND
+24V
RY-ON
R31 47K R32
47K
GNDSP+
ZD8
5V
C32
47uF/50V NP
C33
47u/50V
R8 100K
R86 2K7
R9 100K
R73 100K R82 33K
Q30 2N5551
Q29 2N5551
D16 IN4148 D17
IN4148
GND GND
Q37 2N5551
GND
R80 10K
Q19 2N5401
GND
R85 2K7
C31
100u/25V
R6 10k
R84 2k7
R5 10k
R83 39k
R81 47K
C30 47u/50V
Q20 2N5401
R7
10K
C19 224
R89 68k
D15 4148
R72 100k
+70V
-70V
PRO
FAN
ZD7
1W/15V
ZD5 51V
D20
IN4148
PRA
PRA
R94
1K
R66 2.2K ±1%
R68 1.5K
R67
2.2K ±1%
R69 1.5K
Q23 2N5551
Q21 2N5401
R76 47K
D18
IN4148
D22 IN4148
C25
0.22UF
D19 IN4148
Q25 2N5551
C22 0.1
MUTE
MUTE
D21
IN4148
D5 IN4007
D8 IN4007
C9
22uF/100V
-70V
12
R78 1K5
C28 Comment: 104
C29
10uF/50V 1
2
CN3
2P-2.5
GND1
R79 0R
RH1
NTC500R
IN
G
OUT
U1 LM317
+13V-FAN
1 2P4
SP+
2U500W_AMP 2009/11/4
MAC 2.3/2.2MKII
R87 4.7K/1W
D23 IN4148 D25
IN4148
IN4757
IN4744
2U/500W_AMP 2U/350W_AMP 2U/250W_AMP
2SC5200 2SA1943
ZD1,ZD4
Q9, Q10, Q11, Q12
Q33, Q34, Q35, Q36
Q9, Q10, Q11
Q33, Q34, Q35
Q9, Q11
Q33, Q35
1W 27V 1N4750A 1W 30V 1N4751A
1W 30V 1N4751A
SW1
85°CSW常開
1.DC.保護
2.85°C,熱保護
3..過載保護 4..輸出端短路保護
AMP:此 模組具備如下特性
5.FAN .智能調速
ZD2
43V IN4755
ZD3
27V 1N4750
1W 30V 1N4751A
ZD5 1W 51V IN4757A 1W 39V IN4754
ZD2,ZD3
R1
R66,R67
1W 43V IN4755A 1W 30V 1N4751A
6.2k ±1%
2.2K ±1%
10K±1%
1.8K ±1%
1W 20V 1N4747A
10KO± 1% 1206
3.3K ±1%
0.22R/5W R50,R51,R52,R53 R50,R51,R52,R53
R54,R55,R56,R57 R54,R55 R50,R51,R54,R55
47R R58,R59,R60,R61
R62,R63,R64,R65 R58,R59,R60,R61
R62,R63 R58,R59,R62,R63
6.THD=1%
R30 0R
R34 100K
Q22 2N5401
R29 20K
R71 100K
D11
IN4148
C12
0.22UF
+70V
GND
D9 IN4148
D14 IN4148
R75 PTC100R
R88 10K
D6 IN4148 Q24 2N5401
+24V
R35 10K
GND
R90 0R
1 2
CN5 CN2P
D27
IN4148
Q28 2N5551
R95 10K R93 10K
GND
Q38 2N5401
R92 10K R96 1M
C23
47UF
+24V
D24
IN4148
SA
SA
R91 100K
R97 0R
Text
**
**
*
*
* ON JUMT
*
*
MAC2.3/2.2MKII/PSA3450/3600/3750/3900_V2
ZU500W_AMP_VER090828 (1/1)
1W 27V 1N4750 2U/450W_AMP Q9, Q10, Q11
Q33, Q34, Q35
1W 39V IN4754 1W 39V IN4754
1.8K ±1% 3.60KO ±1%
R30 470R 4.75KO ±1% 680R 4.7KO ±5% 1
R50,R51,R52,R53
R54,R55
R58,R59,R60,R61
R62,R63
--- 7 ---

1 2 3 4
A B C D
4321
D C B ACHB-PU-2
Titel
Size Model No:
MAC2.4 MKII
Revision
VER021004
Date: 19-Nov-2007 Sheet 1of1 File: CHB INPUT.SCH Drawn By: DECHUN QIN
A4
FILTER
2
3
1
CH2
S T R
CH22 C3 470P
C4 470P
1
2
3
4
5
6
7
CN3 TO CN4
--- 8 ---