Inter-m PA-648 User manual

Public Address Power Amplifier
PA-648

CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Electrical Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Top and Bottom View of P.C. Board . . . . . . . . . . . . . . . . . . . . . . . . 6
Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Exploded View of Cabinet & Chassis / Mechanical Parts List . . . 16

1
SPECIFICATIONS
PA-648
Rated Output Power (THD 5%, 1kHz) 480W
Frequency Response (+1/-3dB) 70Hz-18kHz
T.H.D Less than 5%
High Pass Filter (400Hz) -3dB
Gain Control 0 ~ -12dB
S/N Better than 90dB
Input Sensitivity/Impedance 1V/10kΩBalanced
Output Voltage/Impedance 4Ω/43.8V
8Ω/62V
10.2Ω/70V
20.8Ω/100V
Operating Temperature -10�C ~ +40�C
Power Source 100–120VAC or 220–240VAC; 50/60Hz, 24VDC
(Supplied AC mains transformer depends on country requirements)
Power Consumption(1/8 power) 600W
Weight 24kg/52.9lb
Dimensions 482(W)×132(H)×280(D)mm/19(W)x5.2(H)x11(D)in
* Specifications and design subject to change without notice.

2
CN13 111415 04P/B4P-VH/3.96,B4PVH-04P LW0640-04P
CN11 111417 CON WAFER,LOCK(M),6P,ST LW0640-06P
CN12 CN14-17 111357 CON WAFER,BOX(M),2P,ST LW5267-02P
C11 105483 CAP,E,SM,SG,85C,2.2UF,50V,M,5P,TA 2.2/50
C12-13 105445 CAP,E,SM,SG,85C,1UF,50V,M,5P,TA 1/50
C15-16 C18 C22 C24-25 C27-29 105405 CAP,E,SM,SG,85C,10UF,50V,M,5P,TA 10/50
C17 105511 CAP,E,SM,SG,85C,47UF,50V,M,6P,TA 47/50
C19 C109 105543 CAP,E,SM,SG,85C,4.7UF,50V,M,5P,TA 4.7/50
C21 105358 CAP RSA 100UF 100V SNAP 13 P 100/100
C23 105523 CAP,E,SM,SD,85C,470UF,25V,M,10X12.5,TA 470/25
C26 105423 CAP,E,SM,SG,85C,100UF,50V,M,8P,TA 100/50
C30 105473 CAP,E,SM,SG,85C,220UF,25V,J,8P,TA 220/25
C31 105487 CAP,E,SM,SG,85C,33UF,50V,M,6P,TA 33/50
C34 105969 CAP EM 0.47UF 250V K 0.47/250(M)
CR1-2 122507 CAP,CE,3300PF,16V,M,AX,TA 3300P16
CR11-12 122485 CAP,CE,1000PF,50V,K,AX,TA 0.001U
CR13 122486 CAP,CE,120PF,50V,K,AX,TA 120P
CR14 122515 CAP,CE,TEMP,SL,4.7PF,50V,D,AX,TA 4.7P
CR15 122484 CAP,CE,100PF,50V,K,AX,TA 100P
CR16-17 122491 CAP,CE,470PF,50V,K,AX,TA 470P
CR18-21 105777 CAP CE Y 100000PF 50V Z AXIAL 0.1U
D11-19 102687 DIODE,SW,100MA,75V,1N4148M,DO-34M,TA 1N4148
D20 102676 DIODE SCHOTTKY MBR4060PT MBR4060
D21 102659 DIODE,RE,1A,800V,1N4006,DO-41,TA 1N4006(4007)
F4-7 106886 FUSE CLIP,6X31.8 CLIP 31.8mm
FAN1 114196 FAN (F1238H24B) FAN
H3 107838 CON ASS'Y 1P RED TUBE 250-TER ASS'Y 1P RED TUBE
H11-14 110001 CON ASS'Y,DS,4P,P2.6 ASS'Y,DS,4P
H15 107839 CON ASS'Y 1P RED TUBE 250-TER VALUE
H16 107864 CON ASS'Y 1P BLK TUBE 250-TER ASS'Y 1P BLK
H17-18 107840 CON ASS'Y 1P BRN #14 250-TER ASS'Y 1P BRN
H19 107848 CON ASS'Y 1P BRN TUBE 250-TER ASS'Y 1P BRN TUBE
H20 107854 CON ASS'Y 1P RED #14 250-TER ASS'Y 1P RED
H21 107856 CON ASS'Y 1P RED #14 250-TER ASS'Y 1P RED
IPT11 103617 TRANS,IPR,150OHM,515/515OHM 103617
P11-18 111903 TERMINAL(250)PCB TAB 250T
Q11 Q13 Q19-20 Q32-34 102525 TR,SG,NPN,150MA,50V,KTC3198Y,TO-92,TA KTC3198-Y
Q12 102540 TR,SG,NPN,300MA,20V,KTD1302,TO-92,TA KTD1302
Q14 102528 TR,SG,NPN,100MA,120V,KTC3200BL,TO-92,TA KTC3200-BL
Q15-16 102527 TR,SW,NPN,150MA,50V,KTC3206,TO-92L,TA KTC3206-Y
Q17-18 102589 TR,PW,NPN,1.5A,180V,KTC4370A,TO-220IS KTC4370A-Y
Q21-30 102594 TR,PW,NPN,15V,180V,2SC3856,TO-3P(N) 2SC3856
Q31 102578 TR,PW,NPN,3A,60V,KTD2058,TO-220AB KTD2058-Y
Q35 102526 TR,SG,PNP,150MA,50V,KTA1266Y,TO-92,TA KTA1266-Y
Q36 102502 TR,SG,NPN,100MA,250V,2SC4001,TO-126 2SC4001
R60-69 104741 RES,CE,WW,0.22,3W,5% 0.22 3W
R11-13 R16-20 R24 R26 R29 R79 R81 104237 RES,MF,10K,1/5W,5%,AX N,TA 10K
R14-15 R23 104346 RES,MF,5.6K,1/5W,5%,AX N,TA 5.6K
R21-22 R73 R80 104238 RES,MF,100K,1/5W,5%,AX N,TA 100K
R25 104269 RES,MF,1.8K,1/5W,5%,AX N,TA 1.8K
R27 104307 RES,MF,330,1/5W,5%,AX N,TA 330
R28 104375 RES,MF,910,1/5W,5%,AX N,TA 910
R30 104274 RES,MF,2K,1/5W,5%,AX N,TA 2K
R31-32 R36-37 R77-78 104333 RES,MF,47K,1/5W,5%,AX N,TA 47K
R33 104270 RES,MF,18K,1/5W,5%,AX N,TA 18K
R34-35 104367 RES,MF,7.5K,1/5W,5%,AX N,TA 7.5K
ELECTRICAL PARTS LIST
Ref. Part No. Description Value
MAIN B'D

Ref. Part No. Description Value
3
R38 R54-55 104294 RES,MF,270,1/5W,5%,AX N,TA 270
R39-40 R86 104306 RES,MF,33,1/5W,5%,AX N,TA 33
R41 R92 104616 RES,MF,270,2W,5%,RA R,TA 270 2W
R42 104668 RES,MF,4.7,2W,5%,RA R,TA 4.7 2W
R43 R52-53 R89 104329 RES,MF,470,1/5W,5%,AX N,TA 470
R44 104332 RES,MF,4.7K,1/5W,5%,AX N,TA 4.7K
R45 104316 RES,MF,390,1/5W,5%,AX N,TA 390
R46-47 104532 RES,MF,1K,2W,5%,RA R,TA 1K 2W
R48-49 104279 RES,MF,22,1/5W,5%,AX N,TA 22
R50-51 104273 RES,MF,200,1/5W,5%,AX N,TA 200
R56 R59 104281 RES,MF,2.2K,1/5W,5%,AX N,TA 2.2K
R57-58 104275 RES,MF,20K,1/5W,5%,AX N,TA 20K
R70 104174 RES,MF,9.09K,1/5W,1%,AX N,TA 9.09K 1%
R71 104347 RES,MF,56K,1/5W,5%,AX N,TA 56K
R72 104369 RES,MF,75K,1/5W,5%,AX N,TA 75K
R74 104136 RES,MF,3.24K,1/5W,1%,AX N,TA 3.24K 1%
R75 104120 RES MF 1.2K 1/8W FN 1.2K 1%
R76 104173 RES,MF,8.66K,1/5W,1%,AX N,TA 8.66K 1%
R82 104580 RES,MF,20,2W,5%,RA R,TA 20 2W
R83 R90 104236 RES,MF,1K,1/5W,5%,AX N,TA 1K
R84 R87 104361 RES,MF,6.8K,1/5W,5%,AX N,TA 6.8K
R85 104374 RES MF 820K 1/8W J N 820K
R88 104282 RES CF 22K 1/5W J N 22K
RLY11 112629 RELAY 897P-1AH-D T01(DC24V)S.C 897P-1AH-D
SVR11-12 105325 RES SEMI FT-63 TP(100) 100
TH11-12 103445 THERMIST,NTC,50OHM,125C TH50
TP11-15 112218 CNT PLUG 1P CNT-01P
U11 U14 102816 IC,OP AMP,NJM4558D,DIP8 4558D
U12 102888 IC,OP AMP,NJM4580D,DIP8 4580D
U13 103063 IC,VOLT REG,15V,1A,MC7815CTG,TO-220AB 7815
ZD11 102725 DIODE,ZN,500MW,BM,7.5V,DO-35,TA 7.5B
ZD12 ZD18 102742 DIODE,ZN,500MW,BM,16V,DO-35,TA 16BM
ZD13 102733 DIODE,ZN,500MW,BM,8.2V,DO-35,TA 8.2BM
ZD14 102735 DIODE,ZN,500MW,BM,10V,DO-35,TA 10BM
ZD15-16 102731 DIODE,ZN,500MW,BM,5.6V,DO-35,TA 5.6BM
ZD17 102737 DIODE,ZN,500MW,BM,12V,DO-35,TA 12BM
ZD19 102748 DIODE,ZN,500MW,BM,24V,DO-35,TA 24BM
ZD20 102770 DIODE,ZN,1W,BM,10V,DO-41,TA 10V 1W
ZD21 102767 DIODE,ZN,1W,BM,12V,DO-41,TA 12V 1W
AN13 108157 CON ASS'Y 4P 210MM ASS'Y-04P
C101 C103 105396 CAP,E,SM,SE,85C,10UF,50V,M,6.3X5,TA 10/50
C102 105448 CAP,E,SM,SE,85C,1UF,50V,M,4X5,TA 1/50
C104 105511 CAP,E,SM,SG,85C,47UF,50V,M,6P,TA 47/50
C105-106 105546 CAP,E,SM,SE,85C,4.7UF,50V,M,TA 4.7/50
C107 124025 CAP,E,SM,SRE,85C,22UF,50V,M,5P,TA 22/50
CR101 122492 CAP,CE,TEMP,SL,10PF,50V,J,AX,TA 10P
CR102-103 105777 CAP CE Y 100000PF 50V Z AXIAL 0.1U
D101 102687 DIODE,SW,100MA,75V,1N4148M,DO-34M,TA 1N4148
LD101-102 103244 LED,RND 3MM,RED,CLR,1U,AN5,TA ML3BHD2F-EAA-T
LD103-104 103245 LED,RND 3MM,GRN,CLR,1U,AN5,TA LTL-1CHGE-021A
R101 R104 104270 RES,MF,18K,1/5W,5%,AX N,TA 18K
R102 104309 RES,MF,33K,1/5W,5%,AX N,TA 33K
R103 104372 RES,MF,8.2K,1/5W,5%,AX N,TA 8.2K
R105 104236 RES,MF,1K,1/5W,5%,AX N,TA 1K
R106 R108 R123 104238 RES,MF,100K,1/5W,5%,AX N,TA 100K
ELECTRICAL PARTS LIST
LED DRIVER B'D

Ref. Part No. Description Value
ELECTRICAL PARTS LIST
4
R107 104176 RES MF 9.4K 1/8W F N 9.4K 1%
R109 104317 RES,MF,3.9K,1/5W,5%,AX N,TA 3.9K
R110 104281 RES,MF,2.2K,1/5W,5%,AX N,TA 2.2K
R111 104371 RES,MF,820,1/5W,5%,AX N,TA 820
R112 104185 RES,MF,220,1/5W,1%,AX N,TA 220 1%
R113 104239 RES,MF,1M,1/5W,5%,AX N,TA 1M
R114-115 104361 RES,MF,6.8K,1/5W,5%,AX N,TA 6.8K
R116-121 104274 RES,MF,2K,1/5W,5%,AX N,TA 2K
R122 104332 RES,MF,4.7K,1/5W,5%,AX N,TA 4.7K
R124 104256 RES,MF,1.5K,1/5W,5%,AX N,TA 1.5K
R125 104237 RES,MF,10K,1/5W,5%,AX N,TA 10K
R126 104363 RES,MF,680K,1/5W,5%,AX N,TA 680K
Q101 102528 TR,SG,NPN,100MA,120V,KTC3200BL,TO-92,TA KTC3200-BL
Q102 Q104-105 102525 TR,SG,NPN,150MA,50V,KTC3198Y,TO-92,TA KTC3198-Y
Q103 102544 TR,SG,NPN,700MA,50V,2SD1111-AA 2SD1111
U101-102 102816 IC,OP AMP,NJM4558D,DIP8 4558D
ZD101 102734 DIODE,ZN,500MW,BM,9.1V,DO-35,TA 9.1B
ZD102-103 102737 DIODE,ZN,500MW,BM,12V,DO-35,TA 12BM
R91 104719 RES,CE,WW,100,5W,5%,RA T 100 5W
T1 111895 TERMINAL,SCREW,4P,10MM,ST TERMINAL04P
TP2 112218 CNT PLUG 1P CNT-01P
C35-36 105865 CAP,FILM,POLYSTR,0.047UF,400,J 0.047/400(M)
CN18 110411 WAFER LW(3.96) 5P JIS WAFER
SP1 105670 CAP,CE,HI-DI,0.01UF,500V,Z,RA,TA 0.01/500
J1 J3 J6 102394 JUMP WIRE JUMPER(DOM. etc.)
J2 J4/1 J4/2 J6 102394 JUMP WIRE JUMPER(UL/CSA)
AN1 107834 CON ASS'Y 6P SHIELD #26 CON ASS'Y 6P SHIELD
BKT1 113528 BRACKET PCB PS-A152 BRACKET
BKT2 113464 BRACKET PHONE JACK B BRACKET
C1 105480 CAP,E,SM,SG,85C,0.22UF,50V,M,5P,TA 0.22/50
C2 105537 CAP,E,SM,SG,85C,0.47UF,50V,M,5P,5,TA 0.47/50
C3 105820 CAP,FILM,POLYSTR,0.01UF,100V,J,TA 0.01/100(M)
C5-6 105624 CAP,E,LA,15000UF,63V,M,35*50 15000/63
DC1 111590 TERMINAL,DC,2P,19MM,AN,V-0 TERMINAL02P
F15 111858 FAU-0031.3577 SCHURTER PU-3210 FH-FAU0031.3577
H1 107861 CON ASS'Y 1P WHT TUBE 250-TER ASS'Y 1P WHT TUBE
H2 107863 CON ASS'Y 1P BLK TUBE 250-TER ASS'Y 1P BLK TUBE
H3 107838 CON ASS'Y 1P RED TUBE 250-TER ASS'Y 1P RED
H4 108155 CON ASS'Y 1P BLK TUBE 250-TER ASS'Y 1P BLK TUBE
H7 108156 CON ASS'Y 1P BLUE CON ASS'Y 1P BLUE
H15 107839 CON ASS'Y 1P RED TUBE 250-TER ASS'Y 1P RED TUBE
H16 107864 CON ASS'Y 1P BLK TUBE 250-TER ASS'Y 1P BLK TUBE
JK1 111675 JACK,XLR(F),1U,3P,AN XLR/F
JK2 110898 JACK,XLR(M),1U,3P,AN,E403A0090N XLR/M
P3-6 P9-10 P19-P21 111903 TERMINAL(250)PCB TAB 250T
R1 104308 RES,MF,3.3K,1/5W,5%,AX N,TA 3.3K
SW1-2 111948 SW,SLIDE,HOR,DPDT,NS,L7.5 SV10020
VR1 105193 VR,ROT,HOR,1U,L25,5K,B 5KB
AN2 124007 CON ASS'Y,FL,2P,5264,51088,230MM ASS'Y-02P
C4 105789 CAP,CE,AC,Y2/X1,0,01UF,250VAC,M,RA 0.01/250
SW3 112157 SW POWER JPP 2197BCS32 JPP 2197BCS32
TERMINAL B'D
JACK B'D
POWER S/W B'D (PW SW B'D)

Ref. Part No. Description Value
ELECTRICAL PARTS LIST
5
H5-6 124002 CON ASS'Y 1P BRN #14 250-TER ASS'Y 1P BRN
AN131 124008 CON ASS'Y,FL,2P,5264,51088,200MM ASS'Y-02P
LD131 103252 LED,RND,3.1MM,BLU,CLR,1U,ST2.5 LTL1CHTBK1
R131 104281 RES,MF,2.2K,1/5W,5%,AX N,TA 2.2K
HL10 114978 LED LIMITER LIMITER
F1 112460 FUSE,20MM,T,8A,250V,K/U/CS/J T8A/250V
F2-3 112470 FUSE,31.8MM,T,20A,250V,K/U/CS T20A/250V
D1 102674 DIODE,BR,50A,600V,GBPC5006,GBPC GBPC5006
OPT1 103639 TRANS OUTPUT PA-935A O.P.T PA-9348
ACIN1 111738 AC INLET,3P,SS-120,250T-2.0T 6100.432
PT1 103756 TRANS POWER PA-9348 (220V) 220V
103755 TRANS POWER PA-9348(115/230V) 115V/230V
103757 TRANS POWER PA-9348(240V) 240V
AC Cord Set 106904 AC CORD DOME 10A INLET 220V
106948 AC CORD SET,3P,16A,250VAC,V,2200MM 230V
106931 AC CORD,3P,10A,250VAC,V,2500MM 230V,UK
106939 AC CORD SET,3P,10A,250VAC,SAA,2500MM 240V,SAA
106947 AC CORD SET,3P,10A,125VAC,U,2000MM 120V
106909 AC CORD SET,3P,10A,125VAC,J,1800MM 100V
POWER LED B'D (PW LED B'D)
ASS'Y

TOP & BOTTOM VIEW OF P.C BOARD
6

TOP & BOTTOM VIEW OF P.C BOARD
7

TOP & BOTTOM VIEW OF P.C BOARD
8

TOP & BOTTOM VIEW OF P.C BOARD
9

TOP & BOTTOM VIEW OF P.C BOARD
10

TOP & BOTTOM VIEW OF P.C BOARD
11

TOP & BOTTOM VIEW OF P.C BOARD
12

WIRING DIAGRAM
13

BLOCK DIAGRAM
14

SCHEMATIC DIAGRAM
15

EXPLODED VIEW OF CABINET & CHASSIS/
MECHANICAL PARTS LIST
16
EXPLODED VIEW OF CABINET & CHASSIS/
MECHANICAL PARTS LIST
10
8
S7
2
3
9
S6
S6
AC INLET
PART NAME
HANDLE 3 SIZE
KNOB PUSH
DECO KNOB POWER
FRONT PANEL
HANDLE B.K.T
MAIN CHASSIS
WINDOW
LED SPONGE
LENS LED
BRACKET FAN
POWER S/W B'D
POWER TRANS
TERMINAL B'D
BRACKET PCB
HEAT SINK
POWER LED B'D
PCB JACK B'D
TOP COVER
TRANS OUTPUT
BKT PHONE JACK "B"
GUIDE BKT
TERMINAL COVER
TERMINAL STUD
SCREW 3BTC 3X6B
SCREW 2BTC 3X6B
SCREW 3BTC 4X18Y
SCREW BM 3X6N
SCREW 2BTC 3X6B
NO
1
2
3
4
6
5
22
14
10
FOOT
7
8
9
FAN
12
11
13
18
15
16
17
20
19
21
26
STUD
BKT
24
23
25
MAIN B'D
AC CORD
27
28
29
30
S1
S2
S3
S4
S5
8545981010
048603995230
PART NUMBER
8545980910
61A0003500
6503986830
86A0002000
REMARK
Q'TY
2
1
1
1
2
1DOM.
1
7502088010
2828054320
8523997210
6735991210
85A0003500
6735991010
6503976210
7308998512
4003473840
4003473850
4003473830
6505968010
6505952110
4003473820
2818085200
046123497010
1
2
1
2
4
2
1
1
1
1
1
1
1
1
1
6503964710
6505939810
6535992610
4448598810
4003473800
4308987810
8575996540
6535995820
8109330063
8009130064
8109230063
8109340181
8109230063
1
4
1
4
1
1
1
DOM.
2
6
2
4
2
3
ASS'Y SCREW PM 4X18B
SCREW ASS'Y PM 4X8N
ASS'Y SCREW PM 4X18B
SCREW 3BTC 4X8B
SCREW WSAM 4X8B
SCREW WSAM 4X8B
SCREW 3BTC 3X6B
SCREW 2BTC 3X8B
SCREW BM 3X6N
SCREW BM 3X6N
SCREW 2BTC 4X8B
HEX MSPM 3X12Y
S13
S6
S7
S9
S8
S11
S10
S12
S17
S15
S14
S16
8159440083
8095996930
8109340083
8109230083
8095994710
8159440083
8109330063
8009130064
8009130064
8095996930
8109240083
8099130121
4
4
4
10
1
8
2
8
2
1
4
20
20
S14
22
1
1
S1
4
S1
S3
24
S7
5
S3
S7
6
7
S8
S9
S16
12
S13
S15
26
S16
S16
25
23
S13
S10
19
S11
21
27
16
S12
14
30
15 29
S10
E±? OPTION
S17
17
28
SCREW 2BTC 3X8B 8109230083 2
S18
18
17

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2009. 5