Martin Audio MA900 - SCHEMATICS Скачать руководство пользователя

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MA900

Amplifier

Century Point, Halifax Road, Cressex Business Park, High Wycombe, Buckinghamshire HP12 3SL, England.

Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669

Web: www.martin-audio.com E-mail: [email protected]

The Martin Experience

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Содержание MA900 - SCHEMATICS

Страница 1: ...R AMPLIFIER TESTING 7 5 3 3 TANDEM MODE 7 5 3 4 BRIDGE MONO MODE 7 5 3 5 BRIDGE MONO MODE FEATURES 7 6 INSTALLATION 8 6 1 MOUNTING 8 6 2 COOLING 8 6 3 OPERATING VOLTAGE 8 6 4 GROUNDING 9 6 5 POWER CON...

Страница 2: ...e amplifier if liquid ingress is suspected 3 Do not stand water or any other liquid on or near the amplifier 4 Do not use this amplifier near water Do not operate the amplifier if wet or standing in l...

Страница 3: ...reach full output power if the input signal level is high enough 3 5 2 Speaker output hazard Power amplifiers are capable of producing hazardous output voltages To avoid the risk of electric shock do...

Страница 4: ...2 Protect indicator This indicator illuminates if the amplifier attempts to function above its maximum operating temperature 90 C The indicator first comes on as a warning to either turn down the inp...

Страница 5: ...page 13 4 Input signal XLR The Neutrik Combo jack is used which also features a _ TRS phone jacks Pin 2 is hot see page 10 5 Link Input A Phoenix screw terminal connector connected in parallel to the...

Страница 6: ...o obtain full output power As the output power varies with the load impedance 4 ohms is usually taken as the reference The table below gives input volts rms Versus gain for full output power 1 t h d 1...

Страница 7: ...e Link switches when using the amplifier for Bi amping 5 3 4 Bridge mono mode Bridge mono mode is used to deliver increased power to the loudspeakers Using the MA900 in bridge mode reduces the number...

Страница 8: ...low the exhaust to escape If the amplifier is rack mounted do not use covers or doors on the front or rear of the rack Should a heat sink get too hot its sensing circuit will mute the hot channel If t...

Страница 9: ...will operate for less than 2 minutes before thermally limiting or blowing the mains fuse Second the maximum expected average current under worst case program material which is 1 3 of full power accor...

Страница 10: ...incorporate an XLR and _ 6 3mm jack They are active balanced and wired PIN 1 GROUND SHIELD PIN 2 HOT PIN 3 COLD XLR input connector XLR balanced TIP HOT RING COLD SLEEVE SHIELD GROUND _ TRS plug The...

Страница 11: ...worldwide safety requirements The Speakons are wired Channel A output Pin 1 Pin 1 Output A Pin 2 Pin 2 Output B Channel B output Pin 1 Pin 1 Output B The right Speakon Channel A has both channel A an...

Страница 12: ...input level attenuators on the front panel adjust the signal level for their respective amplifier channel in all modes They are calibrated in dB s to help setting up active loudspeaker systems In brid...

Страница 13: ...hes 90 C 9 2 VHF protection If a signal of more than 12kHz at full power is detected which lasts for more than five seconds the VHF protection mutes the input signal This is indicated on the front pan...

Страница 14: ...loudspeaker this can occur when the speaker coil gets warm Fault The amplifier goes into protection with power indicators off Check that the AC mains voltage is within the amplifier s operating range...

Страница 15: ...quipment exposure to inclement weather conditions and normal wear and tear Units on which the serial number has been removed or defaced will not be eligible for warranty service 3 MARTIN AUDIO LTD sha...

Страница 16: ...both channels driven 3 5Arms 7Arms 1 3rd Full power both channels driven 5 5Arms 11Arms Full power 1Khz 1 thd 9 5Arms 19 Arms DISTORTION THD 20Hz 20KHz 1W to full power 0 03 THD 1KHz 1dB below clip 0...

Страница 17: ...x Red LED s Indicators Signal Present 2 x Green LED s REAR PANEL Input Connectors 2 x Neutrik Combo 3 pin Phoenix Output Connectors 2 x Neutrik Speakons Clip Limiters Push Switch ON OFF per Channel S...

Страница 18: ...HP12 3SL England Telephone 44 0 1494 535312 Facsimile 44 0 1494 438669 Web www martin audio com E mail info martin audio com The Martin Experience Please Click here to return to main menu Please Click...

Страница 19: ...The Martin Experience ENGLISH MA900 Amplifier User s Guide All material 2007 Martin Audio Ltd Subject to change without notice...