Page 1
MPA4-80R
SERVICE MANUAL
Page 2
SERVICE MANUAL MPA4-80R
INDEX
- BLOCK DIAGRAM
- SCHEMATICS
- COMPONENTS LOCATION SCHEMA
- TESTING AND QUALITY CONTROL
- TECHNICAL CHARACTERISTICS
- WIRING DIAGRAM
- CONFIGURATION DIAGRAM
- MECHANICAL DIAGRAM
- PACKING DIAGRAM
Page 3
132
132
132
132
E
number:
C
L
10.0744 version: 01.00 A.S.
E
R
drawn: date: 060613 project:
J. Colomines
approved:
title:
EP04-06
product:
BLOC K DI A GRAM
MPA4- 80R
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Page 11
PARTS LIST: PRINTED CIRCUIT 11.0761.01.02
Code
Description
Reference
FCXCN4470000 470n C101
FCXCN4470000 470n C102
FCCE20022000 22u/35 C103
FCCE25010000 10u/50 C104
FCCE25010000 10u/50 C105
FCCE25047000 47u/50 C106
FCCE25047000 47u/50 C107
FCCE20022000 22u/35 C108
FCXCN4100000 100n C109
FCXCN4100000 100n C110
FCXCN4033000 33n C111
FCCIMPA76100 11.0761-01.02 CI101
FCXDDBAS1600 BAS16 D101
FCXDD4007000 1N4007 D102
FCXDD4007000 1N4007 D103
FCRAD0100000 Heatsink HS100
FCIC72940000 TDA 7294 V IC101
FCMICTIP3200 Insulant TIP3.2 IN100
FCCTM0002000 B2B-EH-A J101
FCCTJ1004000 B4P-VH J102
FCIND0020000 1u+10 L101
FCXR15100000 100k0 R101
FCXR13100000 1k0 R102
FCXR13681000 6k81 R103
FCXR14221000 22k1 R104
FCXR14221000 22k1 R105
FCXR14332000 33k2 R106
FCXR14100000 10k0 R107
FCXR14182000 18k2 R108
FCXR11200000 20.0 R109
FCXR11200000 20.0 R110
FCXR11200000 20.0 R111
FCT803010000 Screw M3x10 SPA SC100
FCARM3201000 Metal Washer 3. WA100
FCARAT000000 Washer insulant WA101
40-0173-0100 EP04-06 MPA4-80R.xls 1 of 1
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Page 14
PARTS LIST: PRINTED CIRCUIT 11.1092.02.00
Code
Description
Reference
FCCE32100000
10000u/63
C216
FCCE32100000
10000u/63
C217
FCCE25010000
10u/50
C219
FCCE25010000
10u/50
C220
FCXCD4100000
100n
C221
FCXCD4100000
100n
C222
FCCE25010000
10u/50
C223
FCCE25010000
10u/50
C224
FCCE25047000
47u/50
C227
FCCE25047000
47u/50
C228
FCCE25047000
47u/50
C229
FCCE25047000
47u/50
C230
FCPERL255000
Cer. Bead
CB101
FCPERL255000
Cer. Bead
CB102
FCPERL255000
Cer. Bead
CB103
FCPERL255000
Cer. Bead
CB104
FCCI01092000
Printed Board 11.1092
CI101
FCREC5006000
FB5006
D127
FCREC2510000
B250C1000
D128
FCXZ00005600
Z5.6V
D129
FCXZ00005600
Z5.6V
D130
FCXZ00005600
Z5.6V
D131
FCXZ00005600
Z5.6V
D132
FCXZ00006800
Z6.8V
D135
FCXZ00006800
Z6.8V
D136
FCXZ00006800
Z6.8V
D137
FCXZ00006800
Z6.8V
D138
FCXZ00016000
Z16V
D141
FCXZ00016000
Z16V
D142
FCRAD1151500
Heatsink f/Rectifier
HS101
FCRAD1263600
SERA. 1137
HS102
FCRAD1263600
SERA. 1137
HS103
FCCTAMP04000
4P AMP MALE SOCKET
J139
FCCTAMP04000
4P AMP MALE SOCKET
J140
FCCTAMP04000
4P AMP MALE SOCKET
J141
FCREG1016000
Board Connector Male 2p
J142
FCREG1016000
Board Connector Male 2p
J143
FCREG1016000
Board Connector Male 2p
J144
FCCTM0008000
B8B-EH-A
J145
FCREG1016000
Board Connector Male 2p
J146
FCTUE0030000
Nut M3
NV101
FCTUE0030000
Nut M3
NV102
FCXTT0857000
BC857B
Q101
FCXTT0857000
BC857B
Q102
FCXTT0857000
BC857B
Q103
FCXTT0857000
BC857B
Q104
FCXTT0857000
BC857B
Q107
FCXTT0857000
BC857B
Q108
FCXTT0857000
BC857B
Q109
FCXTT0857000
BC857B
Q110
FCTR15030000
MJE15030
Q113
FCTR15031000
MJE15031
Q114
FCRP54680000
6k8/2 PR02
R201
FCRP54680000
6k8/2 PR02
R202
FCXR53237000
2k37
R264
FCXR53237000
2k37
R265
40-0173-0100 EP04-06 MPA4-80R.xls 1 of 2
Page 15
PARTS LIST: PRINTED CIRCUIT 11.1092.02.00
Code
Description
Reference
FCXR53237000
2k37
R266
FCXR53237000
2k37
R267
FCXR53237000
2k37
R270
FCXR53237000
2k37
R271
FCXR53237000
2k37
R272
FCXR53237000
2k37
R273
FCXR54464000
46k4
R276
FCXR54464000
46k4
R277
FCXR54464000
46k4
R278
FCXR54464000
46k4
R279
FCXR54464000
46k4
R282
FCXR54464000
46k4
R283
FCXR54464000
46k4
R284
FCXR54464000
46k4
R285
FCXR53464000
4k64
R288
FCXR53464000
4k64
R289
FCXR53464000
4k64
R290
FCXR53464000
4k64
R291
FCXR53464000
4k64
R292
FCXR53464000
4k64
R293
FCXR53147000
1k47
R294
FCXR53147000
1k47
R295
FCXR53147000
1k47
R296
FCXR53147000
1k47
R297
FCINTD400000
17128
S110
FCT750300800
Screw M3x8
SC101
FCT750300800
Screw M3x8
SC102
FCT380401200
Screw M4x12 TR
SC103
FCTERMF28000
Faston 2.8mm
TS101
FCARDE030000
Toothed Washer f/M3
WA101
FCARDE030000
Toothed Washer f/M3
WA102
FCARDE040000
Toothed Washer f/M4
WA103
FC4I00545000
1005.04.50
WI101
FC0C01215000
1012.01.50
WI102
FC0E01938000
1019.03.80
WI111
FC0E01945000
1019.04.50
WI112
FC0E01931000
1019.03.10
WI113
FC0E01945000
1019.04.50
WI114
FC2F01750000
1017.05.00
WI117
FC2F01650000
1016.05.00
WI118
40-0173-0100 EP04-06 MPA4-80R.xls 2 of 2
Page 16
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Page 18
PARTS LIST: PRINTED CIRCUIT 11.1102.02.00
Code
Description
Reference
FCCE10000000
47u/16
C101
FCCE10000000
47u/16
C102
FCCE10000000
47u/16
C103
FCCE10000000
47u/16
C104
FCCE10000000
47u/16
C105
FCCE10000000
47u/16
C106
FCCE10000000
47u/16
C107
FCCE10000000
47u/16
C108
FCXCD2100000
100p
C109
FCXCD2100000
100p
C110
FCXCD2100000
100p
C111
FCXCD2100000
100p
C112
FCXCD2100000
100p
C113
FCXCD2100000
100p
C114
FCXCD2100000
100p
C115
FCXCD2100000
100p
C116
FCXCN1220100
22p 2%
C117
FCXCN1220100
22p 2%
C118
FCXCN1220100
22p 2%
C119
FCXCN1220100
22p 2%
C120
FCXCN1220100
22p 2%
C121
FCXCN1220100
22p 2%
C122
FCXCN1220100
22p 2%
C123
FCXCN1220100
22p 2%
C124
FCCE10000000
47u/16
C125
FCCE10000000
47u/16
C126
FCCE10000000
47u/16
C127
FCCE10000000
47u/16
C128
FCCE10000000
47u/16
C129
FCCE10000000
47u/16
C130
FCCE10000000
47u/16
C131
FCCE10000000
47u/16
C132
FCCE10000000
47u/16
C133
FCXCD4100000
100n
C134
FCXCD4100000
100n
C135
FCXCD4100000
100n
C136
FCXCD4100000
100n
C137
FCXCD4100000
100n
C138
FCXCD4100000
100n
C139
FCCE25047000
47u/50
C140
FCCE25047000
47u/50
C141
FCXCD4470000
470n
C142
FCCDK1470000
C470n
C143
FCCDK1470000
C470n
C144
FCCDK1470000
C470n
C145
FCCDK1470000
C470n
C146
FCCE30001000
1u/63
C147
FCCE30001000
1u/63
C148
FCCE30001000
1u/63
C149
FCCE30001000
1u/63
C150
FCXCD2470000
470p
C151
FCXCD2470000
470p
C152
FCXCD2470000
470p
C153
FCXCD2470000
470p
C154
FCCE25010000
10u/50
C155
FCXCD4100000
100n
C156
40-0173-0100 EP04-06 MPA4-80R.xls 1 of 5
Page 19
PARTS LIST: PRINTED CIRCUIT 11.1102.02.00
Code
Description
Reference
FCCE25010000
10u/50
C157
FCXCD4100000
100n
C158
FCXCD2100000
100p
C159
FCXCD2100000
100p
C160
FCXCD2100000
100p
C161
FCXCD2100000
100p
C162
FCCE25047000
47u/50
C163
FCCE25047000
47u/50
C164
FCXCD4100000
100n
C165
FCXCD4100000
100n
C166
FCCE10000000
47u/16
C167
FCCE10000000
47u/16
C168
FCCE10000000
47u/16
C169
FCCE10000000
47u/16
C170
FCCE10000000
47u/16
C171
FCCE10000000
47u/16
C172
FCCE10000000
47u/16
C173
FCCE10000000
47u/16
C174
FCXCD4100000
100n
C175
FCXCD4100000
100n
C176
FCCI01102000
Printed Board 11.1102
CI101
FCDDKE120000
SMAJ12A
D101
FCXDDBAS2800
BAS28
D102
FCXDDBAS2800
BAS28
D103
FCXDDBAS2800
BAS28
D104
FCXDDBAS2800
BAS28
D105
FCXDDBAS1600
BAS16
D106
FCXDDBAS1600
BAS16
D107
FCXDDBAS1600
BAS16
D108
FCXDDBAS1600
BAS16
D109
FCLEDSMD3000
TLMG3100
D110
FCLEDSMD3000
TLMG3100
D111
FCLEDSMD3000
TLMG3100
D112
FCLEDSMD3000
TLMG3100
D113
FCLEDSMD2500
TLMY3100
D114
FCLEDSMD2000
TLMH3100
D115
FCLEDSMD2000
TLMH3100
D116
FCLEDSMD2000
TLMH3100
D117
FCLEDSMD2000
TLMH3100
D118
FCIC07401000
TL074
IC101
FCIC07401000
TL074
IC102
FCIC43101000
LM431AC
IC103
FCIC07201000
TL072
IC104
FCIC07201000
TL072
IC105
FCIC21641000
SSM2164S
IC106
FCIC07201000
TL072
IC107
FCIC07201000
TL072
IC108
FCIC07201000
TL072
IC109
FCIC07201000
TL072
IC110
FCBASJ020000
YKB21-5009
J101
FCBASJ020000
YKB21-5009
J102
FCCTM0005000
B5B-EH-A
J103
FCBASX090000
YKF52-5005
J104
FCBASX090000
YKF52-5005
J105
FCBASX090000
YKF52-5005
J106
FCBASX090000
YKF52-5005
J107
40-0173-0100 EP04-06 MPA4-80R.xls 2 of 5
Page 20
PARTS LIST: PRINTED CIRCUIT 11.1102.02.00
Code
Description
Reference
FCHEA1002000
Head 20p
J108
FCREG1017000
Board Connector Male 3p
J109
FCREG1017000
Board Connector Male 3p
J110
FCREG1017000
Board Connector Male 3p
J111
FCREG1017000
Board Connector Male 3p
J112
FCCTM0006000
B6B-EH-A
J113
FCTERM010000
Jumper Pin
J114
FCTERM010000
Jumper Pin
J115
FCTERM010000
Jumper Pin
J116
FCTERM010000
Jumper Pin
J117
FCTERM010000
Jumper Pin
J118
FCTERM010000
Jumper Pin
J119
FCTERM010000
Jumper Pin
J120
FCTERM010000
Jumper Pin
J121
FCTERM010000
Jumper Pin
J122
FCTERM010000
Jumper Pin
J123
FCTERM010000
Jumper Pin
J124
FCTERM010000
Jumper Pin
J125
FCHEA0020000
Head 20p
J126
FCCTM1003000
S3B-EH
J127
FCCTM1005000
S5B-EH
J128
FCCTM0003000
B3B-EH-A
J129
FCMJ00010000
Jumper
MJ101
FCMJ00010000
Jumper
MJ102
FCMJ00010000
Jumper
MJ103
FCMJ00010000
Jumper
MJ104
FCXR55100000
100k
R101
FCXR55100000
100k
R102
FCXR55100000
100k
R103
FCXR55100000
100k
R104
FCXR55100000
100k
R105
FCXR55100000
100k
R106
FCXR55100000
100k
R107
FCXR55100000
100k
R108
FCXR52100000
100.0
R109
FCXR52100000
100.0
R110
FCXR52100000
100.0
R111
FCXR52100000
100.0
R112
FCXR52100000
100.0
R113
FCXR52100000
100.0
R114
FCXR52100000
100.0
R115
FCXR52100000
100.0
R116
FCXR64243000
24k3 0.5%
R117
FCXR64243000
24k3 0.5%
R118
FCXR64243000
24k3 0.5%
R119
FCXR64243000
24k3 0.5%
R120
FCXR64243000
24k3 0.5%
R121
FCXR64243000
24k3 0.5%
R122
FCXR64243000
24k3 0.5%
R123
FCXR64243000
24k3 0.5%
R124
FCXR64243000
24k3 0.5%
R125
FCXR64243000
24k3 0.5%
R126
FCXR64243000
24k3 0.5%
R127
FCXR64243000
24k3 0.5%
R128
FCXR64243000
24k3 0.5%
R129
FCXR64243000
24k3 0.5%
R130
40-0173-0100 EP04-06 MPA4-80R.xls 3 of 5
Page 21
PARTS LIST: PRINTED CIRCUIT 11.1102.02.00
Code
Description
Reference
FCXR64243000
24k3 0.5%
R131
FCXR64243000
24k3 0.5%
R132
FCXR54196000
19k6
R133
FCXR54196000
19k6
R134
FCXR54100000
10k0
R135
FCXR54196000
19k6
R136
FCXR54196000
19k6
R137
FCXR55100000
100k
R138
FCXR55100000
100k
R139
FCXR55100000
100k
R140
FCXR55100000
100k
R141
FCXR55100000
100k
R142
FCXR54196000
19k6
R143
FCXR54196000
19k6
R144
FCXR54196000
19k6
R145
FCXR54196000
19k6
R146
FCXR55100000
100k
R147
FCXR55100000
100k
R148
FCRF22120000
NF12/ 1/2
R149
FCXR51100000
10.0
R150
FCXR53100000
1k0
R151
FCXR53147000
1k47
R152
FCXR52825000
825
R153
FCXR52316000
316
R154
FCXR55121000
121k
R155
FCXR55121000
121k
R156
FCXR55121000
121k
R157
FCXR55121000
121k
R158
FCXR54511000
51k1
R159
FCXR54511000
51k1
R160
FCXR54511000
51k1
R161
FCXR54511000
51k1
R162
FCXR55100000
100k
R163
FCXR55100000
100k
R164
FCXR55100000
100k
R165
FCXR55100000
100k
R166
FCXR54237000
23k7
R167
FCXR54237000
23k7
R168
FCXR52562000
562
R169
FCXR52100000
100.0
R170
FCXR54237000
23k7
R171
FCXR54237000
23k7
R172
FCXR52562000
562
R173
FCXR52100000
100.0
R174
FCXR54237000
23k7
R175
FCXR54237000
23k7
R176
FCXR52562000
562
R177
FCXR52100000
100.0
R178
FCXR54237000
23k7
R179
FCXR54237000
23k7
R180
FCXR52562000
562
R181
FCXR52100000
100.0
R182
FCXR54100000
10k0
R183
FCXR54237000
23k7
R184
FCXR54237000
23k7
R185
FCXR54237000
23k7
R186
40-0173-0100 EP04-06 MPA4-80R.xls 4 of 5
Page 22
PARTS LIST: PRINTED CIRCUIT 11.1102.02.00
Code
Description
Reference
FCXR54237000
23k7
R187
FCPR21006000
10kA
R188
FCPR21006000
10kA
R189
FCPR21006000
10kA
R190
FCPR21006000
10kA
R191
FCXR55464000
464k
R192
FCXR55464000
464k
R193
FCXR55464000
464k
R194
FCXR55464000
464k
R195
FCXR53100000
1k0
R196
FCXR53100000
1k0
R197
FCXR53100000
1k0
R198
FCXR53100000
1k0
R199
FCXR53100000
1k0
R200
FCXR53100000
1k0
R201
FCXR53100000
1k0
R202
FCXR53100000
1k0
R203
FCXR55348000
348k
R204
FCXR55348000
348k
R205
FCXR55348000
348k
R206
FCXR55348000
348k
R207
FCXR53147000
1k47
R208
FCXR53147000
1k47
R209
FCXR53147000
1k47
R210
FCXR53147000
1k47
R211
FCINTAP13000
8019L
S101
FCINTAP13000
8019L
S102
FCINTAP13000
8019L
S103
FCINTAP13000
8019L
S104
FCINTAP14000
8021L
S105
FCINTAP14000
8021L
S106
FC4K00710000
1007.01.00
WI101
FC4G00415000
1004.01.50
WI102
FC4G00425000
1004.02.50
WI103
FC4G00415000
1004.01.50
WI104
FC4G00425000
1004.02.50
WI105
FC4L00812000
1008.01.20
WI107
FC4K00710000
1007.01.00
WI108
FC4N04940000
1049.04.00
WI111
40-0173-0100 EP04-06 MPA4-80R.xls 5 of 5
Page 23
J. Colomines
author:
C
E
num:
PRELIMINARY:
1. Check the Ground Link switch.
2. Be sure that the correct cable types are used.
3. Verify that the unit’s power supplies, outputs and frame are not shorted.
4. Main power switch OFF.
5. Prepare a sine wave generator providing a 0dB 1kHz output signal, but do not turn it on yet.
6. Plug the signal generator into Channel 1's XLR-type input.
7. Connect four 4Ω load impedances to each output 1, 2, 3, and 4. In case you have not four
8. Connect the millivoltmeter and the oscilloscope to the amplifier’s channels 1 and 2.
9. Turn down all of the potentiometers.
10. Configure Mini-jumpers to set REMOTE CONTROL to ON. See configuration scheme for
11. Connect the amplifier's mains plug to a variac outlet, and leave its output down to 0 volts.
SWITCH POSITIONS:
LE R
51.0191
- When the main power switch is turned off, there should be no continuity between the
amplifier's frame and power ground.
impedances available, just use two, connecting them to each couple of outputs, depending
of the test step you are running.
details.
version:
IN1/IN1+IN2 IN1
IN2/LINK CH1 LINK CH1
STEREO / BRIDGE STEREO
IN3/LINK CH1 LINK CH1
IN4/LINK CH2 LINK CH2
STEREO / BRIDGE STEREO
01.00
approved:
SWITCH POSITION
date:
title:
061129
project:
VERIFICATION PROCESS
EP04-06
product:
MPA4-80R
51-0191-0100 EP04-06 MPA4-80R Anglès.doc 1 of 4
Page 24
VERIFICATION:
1. Turn the tested unit's main power switch ON.
2. Increase gradually the variac's output, until reaching 230V mains voltage. While increasing,
observe carefully the unit, in order to detect any malfunction (heavy vibrations on the
transformer, DC voltage on the amplifier module output, etc.)
3. Check that the red neon is lit.
4. Turn on the signal generator.
5. Verify that all the SIGNAL PRESENT LED’s are also lit.
6. Turn up channel one's input potentiometer. Check that it turns easily and smoothly. At its
maximum position, check that Vo=14Vrms
7. The output signal monitored on OUTPUT1 should be only dependent from the channel 1’s
input signal.
8. Turn up channel two's input potentiometer. Check that it turns easily and smoothly. At its
maximum position, check that Vo=14Vrms
9. The output signal monitored on OUTPUT2 should be only dependent from the channel 2’s
input signal.
10. Both output signals should be in identical phase.
11. Now change the STEREO / BRIDGE channel 1 & 2 selector to BRIDGE position
12. OUTPUT1 and OUTPUT2 should now have opposite phase.
13. Channel 2’s Signal Present indicating LED turns off.
14. The unit's gain level is now controlled only by channel one's input potentiometer. Turn it up
and leave it at its maximum position.
15. Now connect the millivoltmeter and oscilloscope probes to the amplifier’s outputs 3 and 4.
16. Turn up channel three's input potentiometer. Check that it turns easily and smoothly. At its
maximum position, check that Vo=14Vrms
17. The output signal monitored on the output should be only dependent from the channel 3’s
input signal.
18. Turn up channel four's input potentiometer. Check that it turns easily and smoothly. At its
maximum position, check that Vo=14Vrms
19. The output signal monitored on the output should be only dependent from the channel 4’s
input signal.
20. Both output signals should be in identical phase.
21. Now change the STEREO / BRIDGE cannel 3 & 4 selector to BRIDGE position.
22. OUTPUT3 and OUTPUT4 should now have opposite phase.
23. Channel 4’s Signal Present indicating LED turns off.
24. The unit's gain level is now controlled only by channel three's input potentiometer. Turn it up
and leave it at its maximum position.
25. At this point, all clip indicators should be lighting. If necessary, add a little bit of level to the
input signal.
26. Set the IN1/IN1+IN2 selector to IN1+IN2, and verify that the output signal level drops 6dB on
all outputs.
27. Return the switch back to IN1.
51-0191-0100 EP04-06 MPA4-80R Anglès.doc 2 of 4
Page 25
DC OUT VERIFICATION (please proceed without loaded outputs)
1. Select a 10Hz 0dB sine wave output on the signal generator.
2. Check that the yellow DC-indicating LED lights up, together with the green S.P. LED's.
3. Select a 25Hz 0dB sine wave output on the signal generator.
4. Check that the yellow DC-indicating LED turns off.
REMOTE CONTROL VERIFICATION
1- Release all of the input circuit selection switches. ↑.
2- Attenuation potentiometers should all be turned up to their maximum level (right).
3- Apply a 0dB 1kHz signal on channel 1 input.
4- Check the output signal on channel 1’s output. Vo=14 Vrms.
5- Connect the tool equipped with a potentiometer to REMOTE CONTROL CH1.
6- Check the potentiometer sweep, its response curve and attenuation.
7- Repeat this procedure on the rest of inputs and outputs, and on remote controls.
8- When done, leave the REMOTE CONTROL configuration again OFF.
BURNING TEST
Leave the tested unit connected to its correspondent mains voltage, applying input signal
and connecting load impedances, and running at its burn test level for at least 24 hours.
SAFETY VERIFICATION TESTS.
Preliminary:
- Unplug the unit to be tested from the mains outlet.
- Short all ground terminals from signal inputs, outputs and other external connectors, except
the mains plug’s ground.
- Turn on the unit’s main power switch.
Ground continuity test:
Connect the tester’s probes between the mains ground contact and the unit’s backside
main ground test point. When applying a 10A current, verify that the ground impedance is lower
than 0.1Ω.
51-0191-0100 EP04-06 MPA4-80R Anglès.doc 3 of 4
Page 26
Electrical insulation test:
Connect the electrical insulation tester probes between the mains outlet ground contact
and both shorted mains input poles. Adjust the tester’s current limit down to 10mA. Apply
1500Vac during 5 seconds.
The unit’s insulation should be able to resist this voltage, without generating spurious
sparks or a sparkover effect, and the tester may not detect any disfunction.
CAUTION: Do not disconnect nor touch the test probes until the test has finished completely!
VERIFICATION USING MUSIC
Note: As this is a four-channel amplifier, with a versatile input signal selection system
which enhances its connectivity options, the previous procedures have checked that the
input circuitry selection options are functioning correctly when running with input
signals.
1. Release all of the input circuitry selector switches. ↑
2. Verify the outputs 1 and 2’s STACK function by testing their jack-type output connections.
3. Verify individually each of the inputs and their outputs.
4. Verify the sweep of all potentiometers, which should turn easily and smoothly, without
producing noise or scratches.
5. Verify the sound quality (do not allow any kind of scratch or distortion)
6. To ensure that all electrical junctions are well-fixed, hit the tested unit softly against your
working table.
7. Short the output terminals while carrying amplified signal, and verify that once the
short-circuit is removed, the unit recovers normal functioning.
8. Without input signal, and with the potentiometers turned all down first, and also turning them
up to maximum level, verify that the unit’s output signal is free of hum and noise when
listening the output signal through loudspeakers.
QUALITY CONTROL
All mechanical parts should be visually revised, in order to detect scratches on the unit's
painting; all screws should be on their place, correctly tight and unmarked. Check out the unit's
general presentation.
51-0191-0100 EP04-06 MPA4-80R Anglès.doc 4 of 4
Page 27
E
num:
C
LE R
53.0082
version:
01.00
author:
approved:
A.S.
J. Colomines
date:
title:
060529
project:
EP04-06
product:
TECHNICAL CHARACTERISTICS
MPA4-80R
POWER 20-20kHz 1% THD
1 Channel @ 4Ω 80 WRMS
1 Channel @ 8Ω 50 WRMS
All Channels @ 4Ω 55 WRMS
All Channels @ 8Ω 40 WRMS
1 Bridged channel @ 8Ω (all channels driven) 117 WRMS
Frequency response (-1dB) 20Hz - 30kHz
* THD+Noise @ 1kHz Full Pwr. <0.02%
* Intermodulation distortion 50Hz & 7kHz, 4:1 <0.02%
* TIM 100 <0.05%
* S+N/N 20Hz -20kHz @ 1W/4Ω >90dB
Damping factor 1kHz @ 8Ω >160
Slew Rate ±10V/µs
* Channel crosstalk @ 1kHz >60dB
Input Sensitivity / Impedance 0dBV/>20kΩ
Mains Voltage See characteristics in the back of the unit.
Power consumption (max. Out) 524VA
Dimensions 482.6x88x391mm
Weight 9.5kg
* VCA OFF
53-0082-0100 EP04-06 MPA4-80R.doc 1 of 1
Page 28
3x Heat Shrink
16.1004.01.50
16.1004.02.50
16.1008.01.2016.100 7.01.00
16.1017.05.00
16.101 6.05.00
16.1086.01.00
16.1019.03.80
16.1019.04.50
16.1019.03.10
16.1019.04.50
16.1087.01.00
16.1012.01.50
16.1005.04.50
16.1004.01.50
16.1004.02.50
WARNING:
WIRES SEPARATED
FROM RADIA TOR
220-240V
110-120V
16.1017.05.00
16.1016.05.00
PLACE THE WIRE
OVER THE BOTTOM
16.1108.05.50
16.1007.01.00 16.1049.04.00
Page 29
Page 30
h
Nº Qty. Code Description
1 1 FCARDE040000 TOOTHED WASHER M4
2 4 FCARDEPOTE00 ROTARY POT. WASHER M9
3 1 FCARM1050000 WASHER 10,5X30X2,5M
4 1 FCARS4000000 SEGMENTED WASHER M4
5 2 FCASAPWM1000 FRONTAL HANDLE
6 1 FCBOR0030000 GROUND TERMINAL
7 1 FCETIZTT0000 EARTH TAG
8 9 FCGUIAL10000 LIGHT PIPE GUIDE VERTICAL
9 1 FCINTRED3000 MAINS SWITCH W/LIGHT
10 9 FCSEP3080000 SPACER M3x8
11 4 FCSOPMSP4000 PLASTIC SPACER MSP-4N
12 20 FCT400290900 SCREW 2,9x9,5 D7981F BLACK
13 12 FCT803005000 SCREW DIN 7985 M3x5 COMBI
14 6 FCT803005500 SCREW D965 M3x5 BLACK
15 4 FCT803010000 SCREW DIN7985 M3x10 SPANLO
16 18 FCT804006000 SCREW M4x6 SPANLO BLACK
17 2 FCT850300500 SCREW M3x5 REDUCED HEAD
18 1 FCT850411000 SCREW M4x10 TRILOB. WHITE
19 4 FCTALL516000 SCREW DIN7991 M5x16 ALLEN
20 1 FCTFTMPA7000 TOTOIDAL TRANSFORMER
21 4 FCTUPOT00000 ROTARY POT. NUT M9
22 2 FP0282500000 LEFT/RIGHT SIDE
23 1 FP0294700000 BASE CHASSIS
24 1 FP0294900000 TOP COVER
25 1 FP0295000000 FRONT PANEL
26 1 FP0295500000 INPUT BOARD MEC. SUPPORT ANGLE
27 1 FP0299500000 FRONTAL MECHANICAL SUPORT
28 1 FRBASRE20300 MAINS SOCKET FUSE 4A
29 4 FRBOTRD24100 ROTARY KNOB D24 ROTATED INDEX
30 4 FXINS1107610 POWER AMP MODULE
31 1 GENERIC TRANSFORMER RUBBER DISC
32 1 GENERIC SCREW M8 TRANSFORMER
33 1 GENERIC TRANSFORMER TOOTHED WASHER M8
34 1 GENERIC TRANSFORMER NUT M8
DETAIL A
17
27
21
29
11
24
1
16
18
30
4
34
1
33
1
2
APPLY LOCTITE 243 IN
3
ORDER TO FIX THE NUT
1
1
10
9
2
4
26
1
4
20
1
4
13
12
4
31
1
E
number:
C
LE R
30.0225
TO FIX POWER AMP MODULES
USE SCREWS FCT400290900
drawn: date:
approved:
version
01.01
Jordi Folc
22
2
23
1
25
1
5
2
15
4
title:
070309
9
1
product:
MPA4-80R
project:
8
9
EP04-06
MECHANICAL DIAGRAM
28
1
6
1
A
4
1
7
1
1
1
18
1
14
6
12
20
32
1
19
4
Page 31
h
Nº Qty. Code Description
1 4 FCARANY06000 WASHER M6 NYLON BLACK 12x6,4x1,5
2 3 FCBOL0010000 BAG 60x80
3 1 FCBOL0020000 PLASTIC BAG 120x180
4 1 FCBOLS020000 STANDARD BAG 75x65
5 4 FCBOTD240100 ROT. KNOB PROTECTION COVER
6 1 FCCAJSTA2300 PACKING CARDBOARD BOX
7 4 FCCANT116000 INTERIOR REINFORCEMENT
8 1 FCCONX017600 MAINS CORD 3x1,5 ST EU
9 1 FCETI0951140 PRODUCT LABEL PACK (ONE FOR EACH UNIT)
10 1 FCFUNMAN0000 USER MANUAL BAG
11 1 FCMANMPA7300 USER MANUAL MPA4-80R 6-80R
12 4 FCPIE1125500 RUBBER FOOT
13 4 FCREG1006000 CONNECTING TERMINAL STRIPS 2C
14 4 FCREG1007000 CONNECTING TERMINAL STRIPS 3C
15 1 FCTARJG00000 WARRANTY CARD
10
1
11
1
13
3
1
4
1
8
1
2
3
4
15
1
14
4
5
4
12
4
1
4
7
4
E
number:
C
LE R
32.0143
version
01.00
drawn: date:
Jordi Folc
approved:
title:
061123
9
1
project:
EP04-06
product:
MPA4-80R
PACKING DIAGRAM
6
1
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