Alto PS 4 LA EVO User manual

www.altoproaudio.com
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Version 1.0
MODEL: PS 4/5 LA EVO
Revised on June,2010

CONTENTS
1. Introduction..........................................................................................................................1
2. Specification.........................................................................................................................2
3. Block Diagram.....................................................................................................................3
4. Schematic Diagram.............................................................................................................6
5. Wiring Diagram...................................................................................................................9
6. PCB Layout.......................................................................................................................12
7. Exploded View & Mechanical Parts List............................................................................15
8. Trouble Shooting...............................................................................................................22
9. BOM List...........................................................................................................................23

The PS 4/5LA EVO Plastic Speaker Cabinet is designed for professional stage performance. It adopts Italian
design style on the handle. PS 4AL EVO contains a woofer (12” 4ȍ110-220W) and tweeter (15W 8ȍ), while
the PS 5LA EVO has built-in woofer (15” 4ȍ150-300W) and the tweeter (15-30W 8ȍ). This plastic cabinet
features clear tone and thick bass to reproduce clean timbre. (PS 4LA EVO & PS 5LA EVO LOW Output
Power200Watt Class AB / HIGH Output Power 50Watt Class AB), which guarantees its availability in any
applications.
Function & Features of speaker module
PS 4LA / 5LA EVO speaker module is designed for matching the PS series plastic speaker cabinet. The
built-in precision electronic crossover separates the HF signal and the LF signal within PRE-AMP before
discrete power amplification so as to exactly reproduce the original sound. The rated power output of bass
power amplifier is RMS 200W at 4ȍand that of the treble power amplifier is RMS 50W at 8ȍ. If increase the
output power based on unchanged cost of PS 4LA & PS 5LA, the main features are as follows:
1 input volume control knob
1 groupof Input Combo jack
1 group of balanced chain output
Clipping LEDindicator present input signal strength
Overload andoverheat protection
1. Introduction
--- 1 ---

Power System 300W Bi-Amp ( 235W-LOW/65W-HIGH ) in EIAJ Standard
Power RMS ( Continuous ) 250W Bi-Amp ( 200W-LOW/50W-HIGH ) in Class AB
Frequency Response (-10dB) 55Hz-18kHz
Maximum SPL @ 1m 116dB Continuous/ 119dB Peak
Coverage ( H°xV° ) 90°x 45° nominal
Transducer Low 12" Woofer, 2"voice coil
Transducer High 1"Neodymium Driver with 1"voice coil
Electronic Protections Thermal Protect/ Short Circuit/ DC voltage/ Soft Start/ Analog Limiter/Comp
Crossover Frequency At 2k5Hz under Analog processor
Input Level Line +4dBu
Input Impedance 30kohm Balanced / 15kohm Unbalanced
Input Connector LINE with COMBO/ LINK with XLR
External Control Volume Control/ Power ON with Green LED/ Clip Limiter with Red
LED/ Ground Lift
Power Supply AC-220/240V or AC-110/120 Volt
Enclosure Construction Trapezoidal shape/ Floor Monitor facility/ Polypropilene Plastic Cabinet
Mounting Integrated Std. pole-mount/ two handle / three eyebolt point
Dimensions (HxWxD) 660 x 396 x 384mm (26" x 15.6" x 15.12")
Net Weight 19.4 kg / 42.76 lbs
Shipping Weight 22 kg / 48.61 lbs
Power System 300W Bi-Amp ( 235W-LOW/65W-HIGH ) in EIAJ Standard
Power RMS ( Continuous ) 250W Bi-Amp ( 200W-LOW/50W-HIGH ) in Class AB
Frequency Response (-10dB) 50Hz-18kHz
Maximum SPL @ 1m 118dB Continuous/ 121dB Peak
Coverage ( H°xV° ) 90°x 45° nominal
Transducer Low 15" Woofer, 2"voice coil
Transducer High 1"Neodymium Driver with 1"voice coil
Electronic Protections Thermal Protect/ Short Circuit/ DC voltage/ Soft Start/ Analog Limiter/Comp
Crossover Frequency At 2k5Hz under Analog processor
Input Level Line +4dBu
Input Impedance 30kohm Balanced / 15kohm Unbalanced
Input Connector LINE with COMBO/ LINK with XLR
External Control Volume Control/ Power ON with Green LED/ Clip Limiter with Red
LED/ Ground Lift
Power Supply AC-220/240V or AC-110/120 Volt
Enclosure Construction Trapezoidal shape/ Floor Monitor facility/ Polypropilene Plastic Cabinet
Mounting Integrated Std. pole-mount/ two handle / three eyebolt point
Dimensions (HxWxD) 660 x 396 x 415mm (26" x 15.6" x 16.34")
Net Weight 22.04kg / 48.59 lbs
Shipping Weight 27.77kg / 62.11lbs
PS4LA EVO 2-Way 12" Active Speaker Plastic Cabinets
PS5LA EVO 2-Way 15" Active Speaker Plastic Cabinets
2. Specification
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1 2 34
A B C D
4
321
D
C B APS4LA EV0ֱ௃ቹ
Titel
SizeA3 Model No:
PS4LA EV0/ PS5LA EV0 Revision
Date: Sheet of
1 1
File: PS4LA EV0ֱ௃ቹ Drawn By: JIANJUNZHOU
1 2
3
JK2
LINK
1 2 T S G 3 R
JK1
INPUT
29/Dec/2009
SW
GND
QSF.BNQ BNQ!CMPDL2
BNQ!CMPDL3
LIMIT
VR
GND
USFCMF!QPXFS.BNQ
Ё
Ѐ
Ё
Ѐ
CBTT!QPXFS.BNQ
AC IN FUSE AC SW
USBOTGPSNFS QPXFS!TVQQMZ-RECTIFIER
USFCMF!PVUQVU
CBTT!PVUQVU
GND
GND
GND
VER091229
3. Block Diagram
--- 3 ---

1 1
2 2
3 3
4 4
D D
C C B B
A A
PS 4LA EVO
٤ᖲሽሁቹ
Titel Size File: Date:
Drawn By: Sheet
Revision
Model No:
17-OCT-2009
KAIMINGLIU
PS 4LA EVO
1of
PS 4LA EVO
VER091017
A4
1" NEO DRIVER
(BLACK)
+
(BLUE)
_
HI
PA-D588ND SCRW 8 Ohm DUAL MAGNET OUT OF PHASE
WOOFER HK12183
(BLACK)
_
(BROWN)
+
12" 2" V.C. 4 Ohm
+
_
AMP
LPF
HPF
SIGNAL INPUT
+
_
1/1
AMPLIFIER PS 4LA EVO
1
--- 4 ---

1 1
2 2
3 3
4 4
D D
C C B B
A A
PS 5LA EVO
٤ᖲሽሁቹ
Titel Size File: Date:
Drawn By: Sheet
Revision
Model No:
17-OCT-2009
KAIMINGLIU
PS 5LA EVO
1
of
PS 5LA EVO
VER091017
A4
1" NEO DRIVER
(BLACK)
+
(BLUE)
_
HI
PA-D597ND FLAT 8 Ohm DUAL MAGNET
OUT OF PHASE
WOOFER CONE No.NH00492
(BLACK)
_
(BROWN)
+
15" 2" V.C. 4 Ohm
+
_
AMP
LPF
HPF
SIGNAL INPUT
+
_
1/1
AMPLIFIER PS 5LA EVO
1
--- 5 ---

1 2 34
A B C D
4
321
D
C B A
PRE.SCH ( 1/1)
PS4LA-PRE.SCH
Titel
SizeA3 Model No: PS4LA EVO Revision
Date: Sheet of
1 1
File: PS4LA EVO.SCH Drawn By: jianjunzhou
1 2
3
JK2
LINK
1 2 T S G 3 R
JK1
INPUT
C8
22UF/25V
C1
22UF/25V
1
2 3
48
+ _
U1A
NJM2068LD
+ _ U1B
NJM2068LD
R2 10K
R1 10K
-15V
+15V R6 10K
R4 2.2K
R7
10K
R5 1K
R8 1K
R18 10K
R3 47K
R12 820R/2W
R11 820R/2W
C11
33P
C2
220nF
C3
100nF
C4
220nF
C5
100nF
C13
22nF
GND
C14
10U/63V VR1
B50K
1 3 5 7 9
2 4 6 8 10
CN2 IDC-10P
C12 10P
GND
ZD2 15V/1W ZD1 15V/1W
C10
220UF/25V
C9
220UF/25V
C7 0.1U C6 0.1U
+15V
-15V
1 2
CN1 TO PL R13
15K/0.5W
GND
ZD4
15V/1W
ZD3
15V/1W
ZD5
15V/1W
ZD6
15V/1W
R10 10R
C15
0.01UF/400V
6 5 4
SW2B
HSWA-2/3P
3 1 2
SW1A
HSWA-2/3P
GND GND
C17
1uF/25V
24/10/2009
AK
D1 RED LED
4. Schematic Diagram
--- 6 ---

12345678
A B C D
8
7654321
D
C B A
R4 22R 1W
R6 0.1R 2W
Q2 2SA1943
D1
1N4148
+60V_A
D13 1N4004
Q1
C4382
R34
470R 3W
C16
22nF/100V poly
C14 3.3nF/50 cer
C15
3.3nF/50 cer
R32 4R7
R33
4R7
GND1
D7 1N4148
Q6
A1668
D6 1N4148
Q7 2SC5200
R5 22R 1W
R7 0.1R 2W
GND1
-60V_A
A
AKK
D15 1N4004
D17
1N4937
D16
1N4937
C13
2.2nF/50
C12 22nF/50
A K
D11
ZD3V9 1/2W
R1 820R
R3 2K 5W
R2 820R
R52 2K 5W
A K
D12
ZD3V9 1/2W
D8
1N4148
Vic1+
D9
ZD15V1W
C1
220uF/25V
GND1
Vic1-
C11
56pF/50
R14
5.1K
C31 27pF/50
R48
12K
R24
330R
GND1
C7
10uF/25V
D10
ZD15V1W
C3
220uF/25V
GND1
R26
NTC 500R
5 6
7
U1B
4580
L1
2uH 10A
R35 5R6 2W
R36
10R 3W
C17
0.068/250V
GND1
LOW + LOW-
-15V
+15V
R30 300R
R31 300R
C4 221
0.2A
0.2A
R64 56K
AK
D20
ZD5.6V 1W
R62 120K
R28
47K
Q4 MPSA42
GND1
R42
22K
C38
47uF/25V
AA
K
K
D14
4148
1
12 2J2
TP-2
1 2
J1 TP-2
K1
942H-2C-24DS
1 2
J3 TP-2
HI OUT
GND1
Q3 2SA06840R
R21 22R
GND1
Q12 MPSA42
Q13 MPSA92
R22 1.8k
R25 680R
R23 330R
R27 47K
GND1
Q8 HIT667C
Q11 MPSA42
C9
47uF/25V
R29 47K
R65 330K
OUTPUT_1
C5 221
GND1
R43 15K
Q5 MPSA42
C10
47uF/25V
Q10 MPSA42
PRO 1
PRO 1
R63 1K
R60 3.3K
R61 3.3K
AMP (1/1)
PS4LA EV0 AMP.SCH
Titel
SizeA3 Model No: PS4LA EV0 Revision
Date: Sheet of
1 1
File: HK12201 Drawn By: JIANJUNZHOU
C36
22UF/25V
C35
10UF/50V
C34
10UF/50V MUTE
ST-BY
1
2 3
4 5 6
78
9
10 11
12
13
14
15
IC1
TDA7294
R53 27K
R58
0R
R50 0R
R57
2.2K
R55 2.2K
R54 33K
R59
NC
C37 NC
AK
D19
4148
+VCC1
-VCC1
TDA7294
GND1
GND1
HI +
HI OUT
+VCC1
R51 22K
1 3 5 7 9
2 4 6 8 10
CN1
IDC-10P
84
U2C
4580 Vic1+
Vic1-
+60V_A
-60V_A
+VCC1 -VCC1
+VCC1 -VCC1
OUTPUT_1
1 2
J4 TP-2
GND1
GND1
GND1
Q9 MPSA92
R68 10K
D23 1N4148
R69 330K
R71
PTC 100R
DS1 LAMP
GND1
C23 10P
R38 150R C25
0.1UF100V
GND1
C21 330P
C22 220P
R37 33K
R10 10K
GND1
3 2
1
U1A
4580
HI-CLIP
AK
2 1
U3
VTL5C4
5 6
7U2B
4580
R11 2.49K
GND1
R8 10K
R19 100R
C2
100P
GND1
C6 47P
R12 10K
D4
IN4148
D2 IN4148
D5
IN4148
D3
IN4148
R20 10K 3
2
1
U2A
4580
R9 10K
C19
100P
GND1
R13 10K C8
100P
84
U1C
4580 Vic1+
Vic1-
R39 0.5A/50V
GND1
+24V
C24
47uF/25V
R40 1K
GND1 GND1
+24V
R70 5.1K
GND1
C27 56P
GND1
1 3 5
4
7
2 6 8
CN8
CON-8P
1 3 5
4
7
2 6 8
CN7
CON-8P
GND1
1 3 5
4
7
2 6 8
CN5 CON-8P
GND1
1 3 5
4
7
2 6 8
CN6 CON-8P
CILP- CILP +
+VCC1
TP1
VER100201
01/Feb/2010
GND1
--- 7 ---

1 2 34
A B C D
4
321
D
C B A
POWER.SCH ( 1/1)
PS4LA EVO POWER.SCH
Titel
SizeA3 Model No: PS4LA EVO Revision
Date: Sheet of
1 1
File: HK12201 Drawn By: jianjunzhou
01/Feb/2010
D21
C39 104 C40 104
+
C43 4700uF/80V
+
C44 4700uF/80V
F1
T4A
F2 T4A
D22 C41
104 C42 104
+
C45 1000uF/35V
+
C46 1000uF/35V
+60V_A -60V_A +VCC1 -VCC1 OUTPUT_1 GND1
1 2 3
CN3 CON3
1 2 3
CN4
CN-3P-90
D18
1A/400V RB154
GND1
1 2
CN2 2.54 2P C18
0.1uF/50V
GND1
C2
220UF/25V
+24V
+60V_A
-60V_A
OUTPUT_1
+24V
1 3 5
4
7
2 6 8
CN7
CON-8P
GND1
1 3 5
4
7
2 6 8
CN5 CON-8P
GND1
1 3 5
4
7
2 6 8
CN6 CON-8P
+VCC1 -VCC1
GND1 GND11
3 5
4
7
2 6 8
CN8
CON-8P
+VCC1
PT-PS4LA EV0 50V
0 50V
30V
0 30V 0 18V
AC IN FUSE AC SW
0
230V
240V
C4 0.1
C1 0.1
C3
0.1
C5 0.1
GND
VER100201
--- 8 ---