User manual ELECTRO-VOICE 304A

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[. . . ] The MA-1206 provides a powerful 60 watts of output power into 70v/100v or 8 Ohm loads. The 304A has the same feature set but supplies twice the power at 120 watts. [. . . ] Both models have a variety of features to enable them to be customized to a wide range of background music and paging applications. The units feature 12 separate input channels. Input channels 1-10 are designed to be used as either balanced or unbalanced low-Z microphone inputs or they can be switched to a line level signal. Phantom power is also available on any of the 10 inputs. A signal appearing at input 1 will automatically mute the other channels unless the A preamplifier output jack and power amplifier input jack permit the mixed output to be fed to an external signal processor (graphic EQ or compressor), and then returned to the built-in amplifier. The preamp output may be used to drive an additional power amp with its own set of speakers without interrupting the function of the built-in amplifier. Mono or stereo signals may be applied to inputs 11 or 12. The left and right components of a stereo signal can be applied to the dual RCA phono jacks of these inputs and mixed together to drive the built-in monaural power amplifier. A rear panel paging input with gain control is provided for the paging output of a telephone system. An audio signal appearing at this input automatically mutes all other inputs. Step Up To Electro-Voice® C O M M E R C I A L M I X E R PA G I N G A M P L I F I E R S S P E C I F I C AT I O N S AMPLIFIER SECTION Output Power (at 1 kHz): Frequency Response Inputs Sensitivity/Impedance­ Inputs 1-10 Mic Setting: Inputs 1-10 Line Setting: Paging: Power Amp In: Auxiliary: THD (at Rated Output): Signal to Noise Ratio­ Mic: Auxiliary: Paging: Power Amp In: Line Output Level/Impedance­ Preamp Output: Balanced Line Output: Speaker Outputs: Tone Controls­ Bass: Treble: Muting: Protection: Power Dissipation: Power Supply: Dimensions­ Height: Width: Depth: Net Weight: Shipping Weight: 304A 120 Watts 50-15, 000 Hz (±3 dB) 0. 3 mV/600 Ohm (balanced) 75 mV/47 kOhm (balanced) -20 dB m/600 Ohm (transformer isolated) 1 V/10 kOhm (unbalanced) 100 mV to 1 V (unbalanced) <1% at 1kHz >52 dB >65 dB >65 dB >90 dB 1 V/1 kOhm (unbalanced) 500 mV/47 kOhm (unbalanced) 4, 8 and 16 Ohm 25, 70. 7 and 100-Volt +­ 10 dB at 100 Hz +­ 10 dB at 10 kHz 40 dB attenuation 3 independent Slo-Blo® fuses, primary A. C. 390 watts 108-132 V A. C. , 50/60 Hz 15. 0 cm (5. 9 in. ) 48. 0 cm (18. 9 in. ) 32. 0 cm (12. 6 in. ) 12. 0 kg (26. 5 lb) 12. 7 kg (28. 0 lb) MA-1206 60 Watts 50-15, 000 Hz (±3 dB) 0. 3 mV/600 Ohm (balanced) 75 mV/47 kOhm (balanced) -20 dB m/600 Ohm (transformer isolated) 1 V/10 kOhm (unbalanced) 100 mV to 1 V (unbalanced) <1% at 1kHz >52 dB >65 dB >65 dB >90 dB 1 V/1 kOhm (unbalanced) 500 mV/47 kOhm (unbalanced) 4, 8 and 16 Ohm 25-, 70. 7- and 100-Volt +­ 10 dB at 100 Hz +­ 10 dB at 10 kHz 40 dB attenuation 3 independent Slo-Blo® fuses, primary A. C. 215 watts 108-132 V A. C. , 50/60 Hz 15. 0 cm (5. 9 in. ) 48. 0 cm (18. 9 in. ) 32. 0 cm (12. 6 in. ) 9. 0 kg (19. 9 lb) 9. 7 kg (21. 4 lb) Key Markets and Applications · Warehouses · Shopping malls · Retail stores · Churches · Office lobbies · Hotel conference rooms · Dentist/Doctor waiting rooms . . . [. . . ] 215 watts 108-132 V A. C. , 50/60 Hz 15. 0 cm (5. 9 in. ) 48. 0 cm (18. 9 in. ) 32. 0 cm (12. 6 in. ) 9. 0 kg (19. 9 lb) 9. 7 kg (21. 4 lb) Key Markets and Applications · Warehouses · Shopping malls · Retail stores · Churches · Office lobbies · Hotel conference rooms · Dentist/Doctor waiting rooms . . . and any other installation involving background music and paging. MA Series These amplifiers are ideal for use with the EVID ceiling and surface mount speaker products as well as the extensive line of commercial Paging horns and drivers. [. . . ]

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