Bogen M-CLASS AMPLIFIER M450 - Manual (Page 15)

Applications
Application Examples
Application 1:
Simple 1-Zone, 70V Mono telephone paging system with background music
Background music plays through the system when no page is being made. During a telephone page, the background
music mutes to a predetermined level and the telephone page is heard.When the page is complete, the background
music fades back to its previous level.
Mode of Operation: 70V Mono
Amplifier Adjustments: Volume of the telephone page is adjusted by the "A" Level Control, background music level is
adjusted by the "B" Level Control. Set the Lo-Cut switch to 65Hz.
Module Adjustments:Adjust Gain to make each source’s input level similar.Adjust Bass & Treble (where applicable) to
your preference. Adjust ducking control on MAX1R for desired level. Adjust Gate controls of TEL1S for optimum
paging control.
Application 2: Stereo low-impedance music system with microphone override
Stereo program material plays into low-impedance speakers. When the microphone becomes active, the stereo
music is muted to a predetermined level and the microphone is easily heard.When the microphone signal stops, the
music fades back to its previous level.
Mode of Operation: Stereo
Amplifier Adjustments: Stereo music program wired to BAL1S inputs. Each stereo channel volume is controlled by the
associated front level control. Microphone level is also affected by changes in these level controls, but is to be main-
ly set by the Gain control on the MIC1X module. Not applicable in stereo mode.
Module Adjustments:Adjust Gain of MIC1X to desired paging level. Adjust Bass & Treble of MIC1X module to appro-
priate level. Adjust Gate controls of MIC1X for optimum paging control. Adjust ducking control on BAL1S for
desired mute level.
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