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Resumen del manual
A. AMPLIFIER MODEL : PA-305 INTRODUCTION Thank you for purchasing PYRAMID the MODEL PA-305 P. A. AMPLIFIER. The unit has been designed using the latest electronic technology available. The unit will offer exceptional performance and reliability at an affordable price. The unit dilivers 100 watts of power and features 4 microphone input jacks, 70-volt line output, CD/AUX input jacks, selectable speaker impedance (4Q, 8Q, 16Q , 70V) output, five individnal source mixing controls, master volume control, feedback filter and monitor jack-etc. In order to obtain the maximum performace from the unit, be sure to read this mannual carefully. © © On ©©©®®@(J9> ® ® © FEATURES A. FRONT PANEL 1. MIC 1 VOLUME CONTROL To adjust. MIC1 volume control to the desired volume and balance. Volume is increased when turning the controls clockwise. 2 . MIC 2 VOLUME CONTROL Same as item 1 to adjust MIC 2. 3. MIC 3 VOLUME CONTROL Same as item 1 to adjust MIC 3. 4. MIC 4/PHONO VOLUME CONTROL Same as item 1 to adjust MIC 4/PHONO. 5. CD/AUX VOLUME CONTROL Same as item 1 to adjust CD/AUX. 6 . FEEDBACK FILTER CONTROL After you adjust the MASTER VOLOME and MIC 1, MIC 2, MIC 3, MIC 4/ PHONO, CD/AUX controls, test the amplifier. If you hear any feedback, turn FEEDBACK FILTER clockwise until you reduce or eliminate the feedback. 7. MASTER VOLUME CONTROL Volume is creased when turning the controls clockwise. Care should be taken not to overdrive the amplifier once it reaches it maximum stage. This is indicated by LED CLIPPING indicator. 8. MONITOR JACK To monitor the sound source, plug in your headphones to check and adjust the sound sources’ balance. 9. POWER ON/OFF SWITCH To power-up the amplifier, press the power switch to the on position. 10 POWER METER INDICATOR Indicates the power level. These meters are illuminated for easy riewing in dark illuminations. 11. CLIPPING INDICATOR LED The CLIPPING indicater lights when the unit maximum power output signal is exceeded. If thes happens, reduce the MASTER volume or the level of the appropriate mixing control until the indicater flickers on sound level peaks. 12. PROTECTION INDICATOR LED The indicator will lights on, if the unit gets too hot because of a power overload. If this happens, press POWER to the off position to turn off the amplifier. Then let the unit cool and correct whatever caused the overload, press in POWER to turn the power back on. 2 B. REAR PANEL 1 . POWER FUSE This fuse is the power supply fuse. It protects the amplifier from unwanted voltage surges and the other adnormal operating conditions. 2 . SPEAKER TERMINALS Connect your speaker system to these terminals. You can connect one or more 4-, 8- or 16-ohm speakers to the amplifier, with or without thansfor-mers. To ensure equal volume from each speaker, all the connected speakers should have the same impedance rating. 3.GND SCREW TERMINAL This is an altenate ground to earth point. Should you experience excessive noise attach a wire to this screw and attach the opposite end to a good ground connection. This ground point may also be used to eliminate when the amplifier is used with another unit as a mixer, turntable, etc. 4. BYPASS/EQ SWITCH Sets the switch to the EQ position, you can connect an equalizer. Sets the switch to the BYPASS position, the equalizer has no effect on your system’s sound. 5. EQ IN/OUT RCA JACKS To connect an equalizer to these jacks, you can have the effect on your system’s sound. 6. CD/AUX INPUT JACK To connect any high-level sound source, such as a CD player, tape deck, or tuner, to the amplifier’s CD/AUX jack. 7. MIX BUS INPUT JACK You can connect another PA-305 to this jack to double the size of your P.A. system, then you can use eight microphones and two auxiliary sound sources. 8. PHONO INPUT JACKS To connect a low level audio input source (such as a magnetic cartridge turntable) to the amplifier’s L and R PHONO jacks. To avoid a low frequency hum, connect your turntables ground wire to the amplifier’s GND screw. 9. PHONO/MIC 4 SWITCH If you connect a low level audio input source to the PHONO jacks, set PHONO /MIC 4 to the PHONO position. If you set PHONO/MIC 4 to the MIC 4 position, you can use MIC 4. 3 10. MIC 4 XLR JACK To connect an XLR microphone to the jack. 11. MIC 4 К INCH JACK To connect a X inch microphone to the jack. 12. MIC 3 XLR JACK Same as item 10. 13. MIC 3 И INCH JACK Same as item 11. 14. MIC 2 XLR JACK Same as item 10. 15. MIC 2 X INCH JACK Same as item 11. 16. MIC 1 XLR JACK Same as item 10. 17. MIC 1 К INCH JACK Same as item 11. 18.VOLTAGE SWITCH The PA-305 has selectable input voltage from 1!5V/60Hz which is the standard in the USA and Canada. You can also switch the input voltage to 230V/50Hz for European operation. Please make sure the switch is in the proper position before operating otherwise severe damage will result not covered by the warranty. 4 CONNECTION A. CONNECTING INPUT SOURCES 1....