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Фрагмент инструкции
You have chosen wisely whether you picked model PM-! 70 or PM-180 or both. Years of dependable service await you. Please read this OWNER’S MANUAL carefully before connecting either mixer. The few minutes spent with this manual will help you understand their operation and high performance. You will also learn how to connect the mixers properly and how to really get the most out of all the features Yamaha has incorporated into these two mixers. If you need any special help or service, see your Yamaha dealer. He knows what to do and will be happy to help you. You’ve made a good choice. We are confident you’ll be satisfied with the performance and versatility of these models. FEATURES PRECAUTIONS Yamaha’s PM-170 and PM-180 are six-channel input, stereo output mixers that ' can be used alone or as submixers with more sophisticated models. They are easy to operate but perform like real professionals. Check the features here and look at the front and rear panels. You’ll see immediately that these two mixers have the flexibility, performance and reliability you need in your work. Six-Channel Inputs Both mixers have six-channel inputs. Each channel has its own individual VOLUME, LOW/HIGH-EQ and PAN rotary controls and HIGH-PASS filter and INPUT level switches. Choice of Input Jacks PM-170 has unbalanced phone jacks for all six input channels. PM-180 is equipped with transformer-isolated XLR connectors. Top Electronic Performance These mixers are designed for top professional performance. They offer flat frequency response, low distortion and inaudible noise and crosstalk. Mechanically Solid Both the PM-170 and PM-180 are rugged enough for the road but especially ideal for permanent installation thanks to the standard 19” rack mounting. All solid state circuitry increases reliability and portability. Smooth Rotary Controls All the controls are conveniently mounted on the front panel where you can easily reach them. They offer smooth performance to give you the mixing freedom and control you need. 2 Versatile Auxiliary Inputs The right and left AUX INputs can be used for taped programs, echo or reverb or any suitable sources without using any of the six input channels. VU Meters + LED’s The two VU meters offer a visual indication of the average audio level of the program buses. PM-180 has, in addition, two peak indicating LED’s (Light Emitting Diodes). These LED’s react faster than the meters and give the operator a means to evaluate actual output headroom. Switchable Input/Output Levels All six input channels have switches to change the input attenuation so the full range of the VOLUME controls can be used with varying microphone or instrument sensitivities. PROGRAM OUT A is switchable between +4dB (1.23V) and -20dB (78mV) (PM-170). PROGRAM OUT A can be changed between +4dB (1.23V) and -50dB (2.5mV) (PM-180). PROGRAM OUT B for both mixers is set at +4dB (1.23V). Precautions These Yamaha mixers have a modern solid state construction. They have been designed to stand up to tough handling, but they are not indestructible. The most frequent cause of trouble is improper*use due to incomplete understanding of exactly what these mixers can and cannot do. You can easily avoid these mistakes by following the precautions listed here before plugging in or attempting to operate your mixer. Be sure the POWER switch is off before plugging in the power cord. Unplug the power cord as a safety precaution, or at the very least, be sure the POWER switch is off before connecting or disconnecting any cords. The mixer circuitry is guarded by a fuse. When replacing a fuse after the trouble has been corrected, be sure the new one is the exact same type and rating as specified on the chassis. Keep the units away from exposure to direct sunlight and other sources of excessive heat, humidity, dust and shocks. & CONNECTIONS Connecting Up 1. Before plugging in the power cord, make sure the VOLTAGE SELECTOR is properly set for your locality. (U.S., Canadian and Australian, models are preset and thus don’t have this feature.) For the British Standard model, please refer to the instructions on the right side of this page. 2. Set the front panel VOLUME controls to zero or min position and make sure the POWER switch is OFF. 3. Connect your power amp, etc. to the OUTput jacks. 4. Connect the input cords from your instruments and/or mics to the INPUT jacks. 5. Plug in the power cord. (o _2) 6. Turn on the POWER switch. Pick the ON position which affords the lower hum level. (Only one ON position for Australian and European models). 7. Adjust the VOLUME and other controls. Now you are ready to mix sound sources as you like. FOR THE BRITISH STANDARD MODELS As the colours of the wires in the mains lead of the apparatus may not correspond with the coloured markings identifying the terminals in your plug proceed as follows. The wire which is coloured GREEN-and-YELLOW must be connected to the terminal in the plug ...
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