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Resumen del manual
It is equipped with a graphic equalizer, reverberation unit and monitor circuit which extend the mixer's application range from ordinary public address (PA) to business uses. Please read through these instructions so that you will know exactly how to use the EM-200 in accordance with the intended application. CONTENTS BEFORE OPERATION.......... CONTROL PANEL OPERATION . . CONNECTION FIGURE......... BACK PANEL OPERATION...... BLOCK DIAGRAM............ INPUT/OUTPUT SPECIFICATIONS . CHARACTERISTICS FIGURES CABLE CONNECTIONS......... OVERALL SPECIFICATIONS..... 9 9 10 8 2 3 5 6 7 1 BEFORE OPERATION Check the following points before operating your mixer. • Installation location Wherever possible, avoid installing the mixer in a location which is exposed to direct sunlight, or a great deal of humidity, dust or vibration. • Do not block the ventilation holes in the top, bottom and back panels of the mixer since they are designed to dissipate the heat which is generated internally. • Connections Make absolutely sure that you use the commercially available power line voltage to power the mixer. Refer to page 5 for the connections and then proceed to connect properly. When performing the connections, make absolutely sure that the power switch is set to OFF. • Speaker impedance The acceptable speaker load is from 8 to 16 ohms for USA and Canadian models and from 4 to 16 for general models. Do not connect a speaker system with a total impedance of less than the minimum above rating. • Do not set the controls to the following positions. INPUT LEVEL controls —50 for all channels Channel faders Max. for all channels LOW-EQ, HIGH-EQ controls Max. for all channels GRAPHIC EQUALIZER Max. Master faders Max. Although these positions are not the ones usually used for normal use, bear in mind that if you inadvertently set the controls to the positions given above, the conditions governing the equipment connected to the input connectors and the load speakers may result in damage to the speakers. • Maintenance The color of the mixer panels may undergo change if they are cleaned with a paint thinner or similar liquid. Always use a soft dry cloth to wipe off any dirt on the panels. 2 CONTROL PANEL OPERATIONS ©YAMAHA INTEOHATEP MIXER EM SERIES MODEL ñ Ô Ô В Ô ô Ô & Ô Ô Ô Ô & <Ü Ô Ш: Ô Ô Ö' Ô' Ô $$ &: Ô Й Ô Ш ш Ô Ö <$ Ô Ô: о ■Ö' •# iji p P LM CH-1 LM CH-2 L"c CH-3 LM CH-4 LWI CH-5 LWt CH-e CM-7 L"e OH-8 O INPUT LEVEL controls These controls are used to select the input levels of the 'fchannels. They allow a five-step switching (+4/—20/—30/ —40/—50dB) of the channel input levels in accordance with the equipment which is connected. Setting the input levels properly is instrumental is preventing overdrive of the head amplifier, which is cause of distortion in the sound, and in helping to create a clear and natural sound. INPUT LEVEL The table below lists the general settings. Set the controls to the proper level in accordance with the intended application. General settings of input levels INPUT LEVEL o rol setting Input source MIC —50dB Low-level microphone (dynamic type) —40dB High-level microphone (condenser type) INST —30dB Electrical, electronic musical instruments LINE —20dB Low-level line (general audio equipment) + 4dB High-level line (professional equipment) 3 © LOW-EQ controls These are used to control the sound quality in the low range of each channel. The low frequency of 100Hz can be controlled across a range of ±15dB between the leftmost and rightmost settings, and a flat response can be yielded at the center (0) position. © HIGH-EQ controls These are used to control the sound quality in the high range of each channel. The high frequency of 10kHz can be controlled across a range of ±15dB between the leftmost and rightmost settings, and a flat response can be yielded at the center (0) position. Q MONITOR 2 PRE FADER & EQ controls These are the MONITOR 2 channel controls and they are used to control the signal level which is fed out from the channel fader pre-stage and sent to the MON OUT 2 jacks. They are also used as holdback (stage monitor) mixing controls for performers. 0 MONITOR 1 (REV/ECHO) POST FADER & EQ controls These are the MONITOR 1 channel controls and they are used to control the signal level which is fed out from the channel fader and equalizer post-stages and sent to the reverberation circuit, and the MON OUT 1 and ECHO SEND jacks. These controls perform the following roles in accordance with the intended application. 1. Channel controls for reverberation effect. 2. Channel controls for echo effect. 3. Mixing controls for holdback (stage monitor) © PAN controls These controls are used to distribute the input signals of the channels to the left and right channels, and also to position the sound images. Q Channels faders These are used to set the mixing level of the channels and to attain an overall balance in the volume. © ...