Electro-Voice Sx300a Service Manual Download Page 3 | Manualshive

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Summary of Contents for Sx300a

Page 1: ...Becholiblce Telex Communications Service Manual for the SxSOOa Amplifier P300SX...

Page 2: ...THE P300SX 3 INPUT CIRCUIT DESCRIPTION 3 PROTECTION CIRCUIT 3 AMPLIFIER SECTION 3 4 POWER SUPPLY 4 EQUIPMENT NEEDS FOR TESTING 4 INTERNAL AMPUFIER ADJUSTMENTS 4 5 INITIAL TESTING 5 P300SX FINAL TESTIN...

Page 3: ...ipation 400 Watts Input impedance 20 Kohms balanced Power Output into resistive load Continuous into 8 ohms 130 Watts Continuous into 4 ohms 200 Watts Weight P300SX 1 726 grams Crossover for P300Sx 65...

Page 4: ...h the primary voltage at 228 2 At 200 Watts output into a 4 ohms resistor the transformer secondary voltage should be approximately 45 2 V with a primary voltage of 224 2 V The unregulated power ampli...

Page 5: ...ill decrease during warm up to the operat ing voltage of 2 5mV Once you have properly set VR201 we recom mend that you apply a small amount of electri cal paint to the outside of the shaft to prevent...

Page 6: ...most likely cause of frequent shutdowns is overheating of the amplifier See the description above It is possible that with very high volumes the fuse will make intermittent contact causing the ampli...

Page 7: ...and 230 Volt setups use the same transformer since the primary consists of two 0 1 15 V input windings Thus the same trans former may be used for 1 15 V mains or 230 V mains by rewiring the primary t...

Page 8: ...Watt 46898 Resistor 18K Ohm 1 8 Watt 46899 Resistor 2 2K Ohm Vi Watt 46907 Resistor 2 5M Ohm 1 8 Watt 46909 Resistor 2 7K Ohm 2 Watt 46908 Resistor 22 Ohm 2 Watt 46892 Resistor 220 Ohm 1 8 Watt 46902...

Page 9: ...pageg...

Page 10: ...SERVICE MANUAL FOR SX300A AMPLIFIER page 10...

Page 11: ...SERVICE MANUAL FOR SX300A AMPLIRER...

Page 12: ...R SERVICE MANUAL FOR SX300A AMPL...

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