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SRM450

Powered Speaker

SERVICE MANUAL



1999,



2000 MACKIE DESIGNS, INC.

820-184-00

Page 3 is interactive

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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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