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M-Class Amplifier

M300, M450, & M600 Models

Installation and Use Manual

© 2001 Bogen Communications, Inc.

All rights reserved.

54-2037-01D 1205

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Содержание M-Class M300

Страница 1: ...M Class Amplifier M300 M450 M600 Models Installation and Use Manual 2001 Bogen Communications Inc All rights reserved 54 2037 01D 1205 ...

Страница 2: ... for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufac turer 12 Unplug this apparatus during lightning storms or when unused for long periods of time 13 Refer all servicing to qualified service personn...

Страница 3: ... Speakers 7 Standard Input Module 7 Balanced Input Connections 7 Unbalanced Input Connections 7 OPERATION 8 11 Controls Connectors 8 9 Level Controls 8 Sleep Mode Defeat 8 Channel Balance 8 Lo Cut Switch 8 Effects Loop 9 Output Feeds 9 Modes of Operation 9 10 Stereo Mode 9 70V Mono Mode 10 Dual Mono Mode 10 Audio Buses 10 Modules 11 Standard Input Module 11 Standard Input Module Priority Jumper 11...

Страница 4: ......

Страница 5: ...ng noise and ground loops The amplifiers require little maintenance and cleaning as internal electron ic components are located outside of the forced air stream flow Front mounted fan filters provide easy removal and cleaning M Class amplifers have a variety of electronic protection circuits including overcurrent DC voltage and ther mal circuits A special Clip Limiting circuit continuously monitor...

Страница 6: ...pedance output loads A built in Clip Limiting circuit activates and reduces input signal levels when output distortion exceeds a few per cent or when the output load draws too much current One for each channel 4 Power Switch Circuit Breaker Controls AC power to the amplifier and also works as a circuit breaker If the circuit breaker trips push it to the OFF position O and then to the ON position l...

Страница 7: ...processing The Post EQ Output Feed provides a signal that has been affect ed by the external signal processing equipment and the lo cut filter 7 Operational Mode Selector The M Class amplifier has 3 distinct modes of operation Stereo 70V Mono Dual Mono that are designed to provide a wide range of application coverage For a description of the different modes see the Operation sec tion of this manua...

Страница 8: ...them Caution The fan blades are accessible when the grille cover and filter are removed Be careful not to place your finger or other objects into the fan 3 Fan Grille To insert or replace the grilles first insert the tabs on the wider end of the grille in to the notches in the front center casting Snap the other end of the grille in to the snap slots Check that the grille is securely in place To r...

Страница 9: ...ier to allow mounting in 19 racks Attach the rack ears as shown in the Installation Components section If any feet have been attached to the bottom of the amplifier remove them Load the amplifier into the rack and secure it to the rack with appropriate hardware not included Rear Rack Mounting For greater rear support when rack mounting an M Class amplifier the RPK86 Rack Mounting Kit not included ...

Страница 10: ...ation of the right module since it will be covered by the module see Operation Sleep Mode Defeat The input modules are installed by simply sliding them along the card guides inside the module bays until the faceplate firmly sits against the M Class chassis then use the two screws supplied with the module to secure it to the chassis Note The input module included with the amplifier is pre installed...

Страница 11: ...both channels are bridged into a single mono channel Use only speakers that are designed to work with 70V audio systems when connecting to these terminals The speaker terminals can accept up to a 10 ring lug and have integral clamping plates which make wiring easier The 70V output terminals are indicated by a yellow field above them The polarity of the output terminals is indicated for speaker pha...

Страница 12: ...osition If the sleep feature is not desired make sure the switch is in the up position Channel Balance Channel Balance only works in the Dual Mono mode of operation In Dual Mono mode both amplifier channels get the same audio program at the same level To provide some direct control over the amplifier volume levels a Channel Balance control is provided This control allows the adjustment of one ampl...

Страница 13: ...nal equipment The outputs are also quasi balanced for better noise immunity but connection lengths for these outputs should still be kept as short as possible The Pre EQ Output Feed provides the signal before any external signal processing affects it The Post EQ Output Feed provides a signal that has been affected by the external signal processing equipment and lo cut filter Depending on the appli...

Страница 14: ...no mode except that the amplifier supplies two channels of low impedance amplification in this mode see Dual Mono Mode Block Diagram This mode still mixes the input signal from the different modules but a Channel Balance control is provided to adjust the output levels of one channel against the other see the section on Channel Balance It is important in this mode to set the assignment jumpers on t...

Страница 15: ...luded in the module that comes pre installed with the ampli fier The module is factory set for 0 dB gain Set each switch for the channel s desired gain either 0 dB X1 or 18 dB X8 Other Input Modules Various input modules can be installed in the M Class amplifier Refer to the instructions that come with each module for specific connection and setup information The module jumpers must be set prior t...

Страница 16: ...l 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 Opera...

Страница 17: ...optimum paging oper ation Application 4 2 mono zones low impedance speakers telephone paging and background music Zones have significantly different volume levels Background music plays through the system when no page is being made One zone is low volume while the other is high volume During a telephone page the background music mutes to a predetermined level and the telephone page is heard at cor...

Страница 18: ...atus LED is off INTERMITTENT OPERATION Status LED is green Signal LED is off Level controls turned down No signal from source Input module jumpers in wrong bus configuration if available Status LED is green Signal LED is green Clip Limit LED is off Status LED is green Signal LED is green Clip Limit LED is off Input signal level too high Poor speaker connections Lo cut switch set to Flat 70V mono s...

Страница 19: ...ncluded RCA Mono 70V mode unbalanced 5 pin touch proof Barrier Strip RCA Pre Post EQ Output Power Bandwidth 20 Hz to 40 kHz 5 THD THD 1 kHz rated power less than 02 Load Impedance 4 8 ohms 70V Minimum Load Impedance Stereo 3 2 ohms Frequency Response 1 watt 20 Hz to 20 kHz 0 25 dB Output Regulation 1 kHz direct 1 kHz bridged 0 5 dB 8 ohms 1 5 dB 70V Inputs Plug in modules Electronically balanced h...

Страница 20: ... FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED TO THE MAXIMUM EXTENT ALLOWABLE BY LAW Bogen s liability arising out of the manufacture sale or supplying of products or their use or disposition whether based upon warranty contract tort or otherwise shall be limited to the price of the product IN NO EVENT SHALL BOGEN BE LIABLE FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING B...

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