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Bogen M450 - page 1
M-Class Amplifier M300, M450, & M600 Models Inst allation and Use Manual © 200 1 Bogen Communications, Inc. All rights reserved. 54-2037-0 1 R3 02 1 0 ...
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Bogen M450 - page 2
Notice Every effort was made to ensure that the information in this guide was complete and accurate at the time of printing. How ev er , information is subject to change. Important Safety Information W ARNING: T o Reduce The Risk of Fire Or Electric Shock, Do Not Expose This Apparatus T o Rain Or Moistur e. Alwa ys f ollow these basic saf ety preca ...
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Bogen M450 - page 3
Contents Page INTRODUCTION .................................................................................................. 1 Package Contents............................................................................................................... . 1 P ANEL DESCRIPTIONS ...................................................................... ...
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Bogen M450 - page 4
Intr oduction Bogen's M-Class amplifiers deliv er on what pr ofessional sound installers need most: Flexibility , Pow er , and Reliability . Flexibility The M-Class allows for the installation of up to 2 input modules, accepting inputs from micr ophones, telephone systems, stereo sour ces, mono sources, or daisy-chaining of amplifiers. Each M- ...
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Bogen M450 - page 5
P anel Descriptions M-Class Fr ont P anel 1 . Status Indicators The Status LED is a multi-purpose indicator that lights in thr ee colors to show status. One for each channel. • Green - Amplifier is on and operating normall y . • Amber - Amplifier is in low-pow er consumption Sleep Mode . • Red - Amplifier has protected itself due to a fault c ...
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Bogen M450 - page 6
P anel Descriptions M-Class Rear P anel 1 . Lo w-Impedance Outputs Accepts up to # 1 0 spade lugs for low-impedance speak er connections. 2. Channel Balance Only activ e in Dual Mono mode . Allows one channel’ s volume to be adjusted r elative to the other channel. 3/4. Effects Loop In/Out The effects loop connectors pr ovide an inser tion point ...
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Bogen M450 - page 7
Installation Installation Components 1 . Rack Ears Prior to installing the amplifier , you will need to attach the installation rack ears if you intend to install the ampli- fier in a rack and complete the setup pr ocess. Remov e the 6 front most cov er screws on each side panel of the amplifier and attach rack ears as sho wn. 2. Dust Filter Insert ...
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Bogen M450 - page 8
Installation V entilation The M-Class was designed to be placed on a table or rack-mounted. When rack mounted, the amplifiers can be stack ed one on top of the other for maximum use of the rack. An open air space of at least 4" must be pr ovided at the front air intak es of the amplifier , and the rear exhaust must ha ve at least a 4" gap ...
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Bogen M450 - page 9
Installation Module Installation Installation T wo input module ba ys are a vailable to accept various Bogen input modules thereby allowing users to customize the amplifier to suit the needs of the installation. Read the instructions included with the module and mak e the desired jumper setting changes bef ore installing the module. The sleep switc ...
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Bogen M450 - page 10
Connections Speakers Lo w-Impedance Speaker Connections When the amplifier is set to either the ster eo mode or the Dual Mono mode (see Operation section), low-impedance speak ers can be connected to either the "A" or "B" speak er output terminals. The amplifier is designed to w ork into speaker load impedances as low as 3.2 ohm ...
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Bogen M450 - page 11
Operation Contr ols & Connector s Le vel Controls The front-mounted le vel contr ols act differently depending on the mode of operation. In the stereo mode, each lev el control determines the volume of the cor responding amplifier channel as in a typical amplifier . In the 70V Mono and Dual Mono modes, the controls ha ve a differ ent function a ...
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Bogen M450 - page 12
Operation Effects Loop The effects loop connectors act as an insertion point for outboard signal pr ocessing equipment when the M-Class is operating in either the 70V Mono or Dual Mono modes. In these modes, the inputs and front panel contr ols form a 2: 1 mix er . Connect the Effects Loop Out to the input of the external signal pr ocessing equipme ...
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Bogen M450 - page 13
Operation 70V Mono Mode Placing the 3-position switch to its right most position puts the amplifier in the 70V Mono mode of operation. The amplifier supplies a single channel of amplification in this mode (see 70V Mono Mode Block Diagram ). This mode also mix es the signals from each input module into a mono pr o- gram. Input signals of modules tha ...
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Bogen M450 - page 14
Operation Modules Standard Input Module The M-Class is shipped with one input module pre-installed. The module pr o- vides 2 high-impedance, balanced, low- noise inputs, but can be r eplaced by other modules if desired. The input’ s connectors, labeled A & B, correspond to the similarly mark ed rear speak er connections and front panel contr ...
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Bogen M450 - page 15
Applications Application Examples Application 1 : Simple 1 -Zone , 70V Mono telephone paging system with bac kgr ound music Background m usic plays thr ough the system when no page is being made . During a telephone page , the backgr ound music mutes to a pr edetermined level and the telephone page is hear d. When the page is complete, the backgr o ...
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Bogen M450 - page 16
Applications Application 3: Global music/message buff ered and distributed to multiple amps with local override input for each amplifier Similar to the paging situation found at airport depar tur e gates, global music/messages pla y when no local page is present. During local page (from departure gate micr ophone), music/message mutes to predetermi ...
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Bogen M450 - page 17
T r oubleshooting 1 4 • Amplifier not plugged in. • A C outlet dead. • Po wer switch off. • Break er (pow er switch) tripped. - T urn off, then turn bac k on. • 70V mono connections on amplifier incorr ect. • Poor/br ok en speak er wiring. • Defectiv e speakers. • Poor electrical connections at input. • Input cable routed near AC ...
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Bogen M450 - page 18
Specifications 1 5 * Both channels driven at nominal line v oltage 1 20V A C , 60 Hz. ** Requires 20A, NEMA 5-20R T ype Receptacle . T echnical Specifications M600 M450 M300 P ower Output 70V Mono 4-ohm 8-ohm 1 200W @ 4 ohms 600W per channel* 400W per channel* 900W @ 5.5 ohms 450W per channel* 300W per channel* 600W @ 8 ohms 300W per channel* 200W ...
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Bogen M450 - page 19
50 S pring S treet, Ramsey , NJ 07446, U.S.A. T el. 201-934-8500, Fax: 201-934-9832 Web Site: www .bogen.com / E-mail: info@bogen.com ...
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