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Фрагмент инструкции
This permits the operator to preset the Input Level switch and Equalizer prior to feeding the program or monitor mixing buses or outputs. CUE is also useful for trouble-shooting, making it possible to locate a problem input without disruption of the PROGRAM or MONITOR mixes. CUE may also be used to identify (or “solo”) each input and to preview recorded or remote inputs for timing cues. Q CHANNEL FADER (INPUT FADER) A straight-line control which provides continuously variable adjustment of the channel’s output to the PROGRAM (L & R) and the MONITOR 1 mix buses (via the MONITOR 1 control). Close-tolerance machining, a conductive plastic element, and integral dust seals assure a long and reliable life of low-noise operation. Designed and built by Yamaha, this feather-touch Fader is accurately calibrated in dB of attenuation relative to maximum level. Setting at —6dB ( ■ ) provides a nominal level when a signal is fed at the same level as the level switch. Setting the control near the dot offers the best S/N ratio. 0 EQUALIZER These controls alter the frequency response of the channel input. The LOW and HIGH controls provide ±15dB of continuously variable shelving equalization at 100Hz and 10KHz respectively. The MIDDLE control provides ±15dB of continuously variable peaking equalization at 1,5KHz. Centering the controls provides flat audio response by defeating the equalization. All three controls are calibrated in dB of boost and cut. O MONITOR 2 VOLUME This rotary control assigns the post-equalizer, prefader signal to the MONITOR 2 mixing bus. The MONITOR 2 mix is useful for headphone cue mixing, or wherever independence from the program mix is desired. The MONITOR 2 mix also provides a means to make monaural tape recodings that are independent of program mixing variations. Stage monitors often are driven by MONITOR 2 so that program mix changes will not distract the performers. 0 MONITOR 1 VOLUME This rotary control assigns the post-equalizer, postfader signal to the MONITOR 1 mixing bus. Used for monitoring when changes in the balance of the program mix must be heard in the monitor mix, MONITOR 1 also can be used to drive echo or reverb units, dressing room, lighting booth, projection room or other remote feeds. @ PAN POT This rotary control assigns the equalized, post-fader output of the channel to the stereo Program mixing buses. Centering the PAN pot places the signal equally in the left and right mix buses; panning to one side or the other gradually assigns the input signal to either the left or right program mix exclusively. O INPUT LEVEL SWITCH This rotary switch changes the input attenuation and preamplifier gain to accommodate nominal levels of -50, -40, -30, -20 or +4dBm. These sensitivities correspond to low-output dynamic microphones, medium-output condenser microphones, electric instrument preamps or lines, low-level (hi-fi) line sources, and high-level line sources. When properly set, the Input Level switch provides the best combination of maximum headroom and minimum noise characteristics; at the same time, it maintains the fullest range of Fader travel. In OFF position, no signal flows to any of the channel outputs (i.e., regardless of cue, fader or monitor send settings, the channel is defeated). The Output Section © MASTER PROGRAM FADERS The same type of Yamaha dB calibrated Faders used on the input channels also set the overall level of the stereo mix which is fed to the Program outputs. Labeled “PROGRAM”, these MASTER Faders are useful for balancing the stereo image, and for overall program fades. 0 PROGRAM EQUALIZERS A set of LOW, MIDDLE and HIGH controls is associated with the left and right MASTER PROGRAM channels. These equalizers operate exactly like the input channel equalizers, affording an added degree of tonal flexibility. Individual microphone, instrument or line characteristics can be enhanced with the CHANNEL EQ, and the PROGRAM EQ then contours the overall mix. ® MONITOR MASTER FADERS These also are the same Yamaha dB calibrated faders used elsewhere in the PM-700. These Faders set the overall level of the two mix buses which feed the MONITOR 1, MONITOR 2 and TO ECHO outputs. (TO ECHO is the same mix as MONITOR 1.)