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Содержание PM300 SERIES

Страница 1: ...PM300 SERIES OPERATING AND SERVICE MANUAL Manufactured by SHURE BROTHERS INC 222 Hartrey Avenue Evanston Illinois 60204 U S A Copyright 1978 Shure Brothers Inc AL 407 RE 27A822 Printed in U S A...

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Страница 3: ...m and Noise 80 db below rated output Speaker Load Impedance Nominal 8 ohms Operational 5 3 ohms minimum see Page 4 Dimensions 178 mm height x 429 mm width x 229 mm depth 7 in x 16 7 8 in x 9 in Weight...

Страница 4: ...FIGURE 1 FIGURE 2 2...

Страница 5: ...Power Master to the jack marked To Tape Recorder on the VA300 C or to the jack marked Aux Hi Level Output on the VA302 Series Console con nect the other end of the cable to one of the jacks marked Hi...

Страница 6: ...as a monitor at the high est possible sound level without feedback The following list shows various speaker combinations and the resultant impedance loads which are suitable for use with the Power Mas...

Страница 7: ...d in an ambient temperature range from 7 C to 43 C 20 F to 110 F for continuous duty without de rating Thermal Overload The Power Master is equipped with thermal sensing switches on the heat sinks of...

Страница 8: ...ement and before connecting transistor leads check transistors with an ohm meter between case and chassis there should be no con tinuity Be sure that these transistors are not inverted in the circuit...

Страница 9: ...the ohmmeter plus probe on the anode end of a diode and the minus probe on the cathode end the ohmmeter should read approximately 2 000 ohms or less With the meter probes reversed a reading of about 1...

Страница 10: ...32A627 None 90BC2600 65A685 90B2285 95A500 95A604 Knob and Screw Line Cord Storage Spindle Handle and Nuts Bumper Plastic Foot Volume Control Knob Assembly Fuse Holder PM300 and PM300E Fuse Holder 5x2...

Страница 11: ...me control set to maximum 7 AC voltage measurements may vary 20 from the values shown Shure part numbers are not shown in the Parts List ac companying the circuit diagram if parts are readily avail ab...

Страница 12: ...PM300E POWER SUPPLY CIRCUIT DIAGRAM FIGURE 8 PM300E6 POWER SUPPLY CIRCUIT DIAGRAM FIGURE 9 10...

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