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A-7

227c

300-003-00 DIO SW DL4148 100V SM DL4148 D1-15 D19-21 D23-25 D27-31 D35 D37-41

D44 D47-48 D54

300-010-00 DIO SIG RLS245 220V 200MA RLS245 D26 D32 D34 D36
301-019-00 DIO PWR BRDG 25A 400V SIP 25A D55-56
301-021-00 DIO PWR DL4004 SM DL4004 D16 D22 D33 D42 D45 D52 D57
301-023-00 DIO PWR SR505 SR505 D50-51
302-025-03 DIO ZEN DL5245B 15V SMT DL5245B D17-18 D43 D49
302-026-00 DIO ZEN 1N4744A 15V 1W 1N4744 D46 D53
304-027-02 LED RED W/.425 SPACER TR RED D59 D61
304-029-02 LED GRN W/.425 SPACER TR GRN D58 D60
310-014-00 XSTR PNP MJE2955  A Q34 *
310-015-00 XSTR NPN MJE3055  A Q35 *
310-024-00 XSTR PNP 2SB817 2SB817 Q3 Q32
310-025-00 XSTR NPN 2SD1047 2SD1047 Q8 Q21
310-028-00 XSTR PNP 2SB940A POWER 2SB940A Q10 Q19 Q34 (Q34 may be a MJE2955) *
310-029-00 XSTR NPN 2SD1264A POWER 2SD1264A Q9 Q20 Q35 (Q35 may be a MJE3055) *
310-035-00 XSTR PNP 2SA1478 2SA1478 Q23
310-036-00 XSTR NPN 2SC3788 2SC3788 Q12
310-037-00 XSTR NPN MJE340 POWER MJE340 Q14-15
310-038-00 XSTR PNP MJE350 MJE350 Q4-5
310-050-00 XSTR NPN 2SC1567A 2SC1567A Q11 Q18
310-053-00 XSTR MOSFET PCH IRFP9140N IRFP9140N Q33
310-054-00 XSTR MOSFET IRFP150N IRFP150N Q2
311-001-00 XSTR NPN IMBT4401 SM IMBT4401 Q1 Q29 Q42
311-002-00 XSTR PNP MMST4403 SM IMBT4403 Q30-31 Q41 Q43
311-007-00 XSTR PNP 2SA1415 2SA1415 Q6 Q17 Q22 Q24
311-008-00 XSTR NPN 2SC3645 2SC3645 Q7 Q13 Q16 Q36
311-019-00 XSTR PNP 2SB792 SM 2SB792 Q27-28 Q39-40
311-020-00 XSTR NPN 2SD814 2SD814 Q25-26 Q37-38
320-006-00 OPAMP 2068E NJM 2068 U3 U20
320-012-00 OPAMP NJM4560M NJM4560M U1-2 U4 U6-8 U10-19 U21-26
320-015-00 IC, VCA SSM2164SMD U9
323-002-00 LM339D QUAD COMP SM LM339 U5
400-041-00 XLR VERT MALE PCMNT J18
400-060-00 FUSE CLIP PCMT Z4-5
400-132-00 IEC MALE RTA PCMT J1
400-133-00 HDR 6CK 11A/600V J12
400-139-00 SHUNT 2P .100 Z11
400-163-00 HDR 4P .165X2 M V W/PEGS J16
400-171-00 HDR 2P .100X1 STR J6-8 J15 J20-21
400-173-00 TERM .25 QKDS PCMT STABLE J2-5
400-223-00 XLR PCMNT NEUTRIK-AP SER J17
400-243-00 HDR 2P .098X1 SHRD J13 Z100
400-307-00 HDR 6P .098X1 SHRD RTA J14
450-227-00 PCB, SRM450: AMPLIFIER Z50
500-026-00 THERMOSTAT 67F070 PCMNT 67F070 TH1
500-037-00 SWITCH 2PDT PUSH V SNAPIN 2P2T SW1-3
510-013-00 FUSE SB 7A 5X20MM 250V  A 1 F1 For 120V units
510-011-00 FUSE SB 4A 5X20 250V IEC  B 1 F1 For 230V units
510-024-00 FUSE SB 8A 5X20MM 250V  A 1 F1 For 100V units
620-025-00 CBL 3P .100 3.25IN J19
706-033-10 STDF SWAGE NO.4 X .527L F SO1-3
712-021-01 RVT CL END .125X.062-.125 Z6
712-062-00 BRKT ANG 6-32 ONE HOLE Z104
760-107-00 BTN 2 COLOR 9X5MM Z8-10

PART NO. DESCRIPTION VALUE REFERENCE DESIGNATORS

Components  noted with this symbol shall be replaced only by the component specified.
This is required to maintain product safety.

Summary of Contents for SRM 450

Page 1: ...SRM450 Powered Speaker SERVICE MANUAL 1999 2000 MACKIE DESIGNS INC 820 184 00 Page 3 is interactive Go To Bulletins...

Page 2: ...2 SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY EXPERIENCED REPAIR TECHNICIANS ONLY...

Page 3: ...ailable 8AM 5PM PST Monday through Friday for Authorized Mackie Service Centers at 1 800 258 6883 Feel free to call with any questions and speak with a carefully calibrated technician If one is not av...

Page 4: ...ENCY DRIVER TWEET LO FREQ AMP HI FREQ AMP SENSE RESISTOR BASS CONTROL SERVO LOOP WOOF PEAK LIGHT PEAK DETECTION THRESHOLD LPF THRESHOLD MID VDC LO VDC HI VDC TOROIDAL POWER TRANSFORMER FUSE POWER SWIT...

Page 5: ...4 dBu centered Mic 36 dBu Maximum Input Level Line 22 dBu Low Cut Frequency 75Hz Second order filter EQ Peaking 3 dB 55Hz 3 dB 20kHz Over Excursion Protection Second Order High Pass Filter Thermal Pr...

Page 6: ...watts peak 300 continuous before clipping The high frequency amplifier produces up to 150 watts peak 100 continuous before clipping Each amplifier has its own compressor circuit that acts when the in...

Page 7: ...ncy resulting in perfect power response Our heroic engineers have worked carefully to ensure that the SRM450 also provides perfect phase response This diligence has yielded phenomenal accuracy even if...

Page 8: ...unit under test 2 Connect the unit under test to an AC power source using a ground lift adaptor leaving the unit s safety ground floating Turn the unit on 3 The meter reading should be less than 750mV...

Page 9: ...e amplifier so it can be safely turned on again 6 Replace the power cord and turn on the amplifier and take care not to touch any exposed live AC components 7 No input signal is applied 8 Low frequenc...

Page 10: ...10 LOW FREQUENCY BIAS TEST POINT LOW FREQUENCY BIAS ADJUSTMENT POT HIGH FREQUENCY BIAS TEST POINT HIGH FREQUENCY BIAS ADJUSTMENT POT 80V 15 VDC 15 VDC 80V 45V 45V...

Page 11: ...Capacitors 300 Semiconductors 400 Jacks Connectors 500 Switches 510 Fuses 550 Chassis Metalwork 600 Transformers 601 Inductors 610 Wires and Cables 640 AC line cords 700 Hardware 760 Knobs Plastic 770...

Page 12: ...5 16 18 2IN STL A 1 701 016 00 5 20X5 16 PHPII TYP B BLK A 4 705 001 00 KEPNUT 6 32 A 2 705 005 00 NUT LOCK 4 40 A 4 705 018 00 NUT HEX 5 16 18 GD 5 A 1 710 005 00 WASHER INT STAR NO 6 BLK A 4 710 017...

Page 13: ...028 00 SCREW FEET GRILL CD THR 13 701 029 00 SCREW PCB ASSY LED 1 705 031 00 FLYING HW INS NUTS GALV 8 705 032 00 FLYING HW INS NUTS BLK 2 710 049 00 WASH HDL MTNG TO CASE 4 710 050 00 WASH FLAT WOOF...

Page 14: ...00 RES TF SM 1W 5 75K 75K 5 R71 140 123 00 RES TF SM 1W 5 100K OHM 100K 5 R26 R57 60 R93 140 147 00 RES TF SM 1W 5 1M OHM 1M 5 R75 145 162 00 RES MF SM 1W 1 47R5 OHM 47R5 1 R6 R145 R223 224 R231 232 R...

Page 15: ...00 RES MF SM 1W 1 22K1 OHM 22K1 1 R5 R12 145 435 00 RES MF SM 1W 1 30K1 OHM 30K1 1 R50 R53 54 R113 114 R125 145 437 00 RES MF SM 1W 1 31K6 OHM 31K6 1 R277 145 439 00 RES MF SM 1W 1 33K2 OHM 33K2 1 R74...

Page 16: ...C96 C126 220 002 02 LYT 47UF 20 25V RAD TR 47UF 20 C13 C24 25 C30 C35 C47 C119 C146 C149 C153 C157 159 220 004 02 LYT 470UF 20 6 3V RAD TR 470UF 10 C1 220 005 02 LYT 470UF 20 25V RAD TR 470UF 10 C156...

Page 17: ...11 007 00 XSTR PNP 2SA1415 2SA1415 Q6 Q17 Q22 Q24 311 008 00 XSTR NPN 2SC3645 2SC3645 Q7 Q13 Q16 Q36 311 019 00 XSTR PNP 2SB792 SM 2SB792 Q27 28 Q39 40 311 020 00 XSTR NPN 2SD814 2SD814 Q25 26 Q37 38...

Page 18: ...e the power cord and turn on the amplifier and take care not to touch any exposed live AC components 7 No input signal is applied 8 Low frequency amplifier bias adjustment While the heatsink is still...

Page 19: ...ERVICE NEWS SRM450 Bias SSE June 1999 LOW FREQUENCY BIAS TEST POINT LOW FREQUENCY BIAS ADJUSTMENT POT HIGH FREQUENCY BIAS TEST POINT HIGH FREQUENCY BIAS ADJUSTMENT POT 80V 15 VDC 15 VDC 80V 45V 45V SR...

Page 20: ...0 REV A Prepared by ______________________________Date _____________ Chad Trani Manufacturing Engineer Approved by ______________________________Date _____________ Ray Vancour Field Service Manager Ap...

Page 21: ...e by hand one or two sharp jerks on the bolt should pull the assembly free Pole Mount Bolt Assembly 2 Unscrew the defective brass knurled insert from the bolt and remove the black metal bolt bushing 3...

Page 22: ...insert tool and drive insert into position clockwise Insert will stop against shoulder when at correct installed depth NOTE DO NOT drive the insert in fast Doing so will damage the plastic hole and d...

Page 23: ...nt Plastic burrs from insert installation 11 Take the installation tool out of the drill and remove the metric nut from the threaded end of the tool 12 To reinstall the black metal bushing screw the i...

Page 24: ...esigns Inc Mackie and the Running man figure Part No 820 158 01 Rev A 8 2000 SRM450 C300 stabilizing feet 2000 Mackie Designs Inc All rights reserved The following are trademarks or registered tradema...

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