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Nor275

Hemi-dodecahedron Loudspeaker

Nor276

Dodecahedron Loudspeaker

Nor280

Power Amplifier

user

documentation

noise excitation

equipment

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Содержание Nor275

Страница 1: ...Nor275 Hemi dodecahedron Loudspeaker Nor276 Dodecahedron Loudspeaker Nor280 Power Amplifier user documentation noise excitation equipment ...

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Страница 3: ...Noise Excitation Systems ...

Страница 4: ...amages of the use of this information and or the instrumentation described herein Furthermore Norsonic AS assumes no responsibility for any infringement of the intellectual property rights of third parties wherever applicable which would result from such use Norsonic AS reserves the right to amend any of the information given in this manual in order to take account of new develop ments If you wish...

Страница 5: ... dodecahedron Loudspeaker 08 Nor276 Dodecahedron Loudspeaker 12 Nor280 Power Amplifier Contents 07 Nor275 Hemi dodecahedron Loudspeaker 08 Nor276 Dodecahedron Loudspeaker 12 Nor280 Power Amplifier Contents 10 4 16 8 ...

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Страница 7: ...Nor275 280 system performance The loudspeaker is desinged to operate at full power for more than one hour continuously Specifications Nor275 Physical design Hemi dodecahedron Sound power output Using the Nor280 with pink noise and equalisation 120 dB Lin Speakers 6 6 Power broadband 100 WRMS maximum Peak 500 W Impedance 5 3 Ω Diameter 332 mm 13 Height 175 mm 6 9 Weight 6 kg 13 2 lb Accessories inc...

Страница 8: ... the concept Connecting to a Power Amplifier The Nor276 as been designed for continuous operation for more than on hour at full power The speaker input socket accepts Speakon NL4FC connectors see overleaf for more on this A mounting rod Ø 1 makes tripod mounting easy and safe Specifications Nor276 Physical design Dodecahedron Sound power output Using the Nor280 with pink noise and equalisation 120...

Страница 9: ...e tolerance limits Typical sound power level vs frequency of the loudspeaker Nor276 when used with the pink noise source and equalizer included in the power amplifier Nor280 100 Hz 315 Hz 1 kHz 3 15 kHz Sound power in different directions for Nor276 The measurement is done in a horizontal plane through the centre of the loudspeaker The graph shows the respons for a sinusoidal signal at 100 Hz 315 ...

Страница 10: ... pointing to a flat surface floor will be damaged if excited when placed directly on a floor or other flat surfaces Warranty of the loudspeaker is void if excited with other power amplifiers than Norsonic Nor280 and a Norsonic sound level meter Caution 10 User documentation ...

Страница 11: ...ected together 1 and 2 are to be connected together Insert 1 Insert 2 Turn right locks automatically contact is made after turning Remove 3 Pull lever 4 Turn left 5 Pull plugg Strain relief bushing don t loosen The Nor275 Nor276 Quick Lock connector LIE CHTENSTEIN 2 1 5 3 4 11 Noise Excitation Systems ...

Страница 12: ...n automatic system will guard against overheating and high signal voltages through the input The built in cooling fan is normally not required but will run at high room temperatures or during prolonged use of the amplifier at full power It will however immediately switch off when the input signal goes off this feature makes the unit well suited to reverberation measurements in areas of low backgro...

Страница 13: ...network is adapted to the Nor275 Nor276 loudspeakers When using other speakers it is recommended to switch the equalizer off or use the network with care in order not to damage the speaker The high and low pass filter is always a part of the signal path regardless of the setting of the equalization switch Error indicator The error indicator is illuminated and the output signal is turned off when o...

Страница 14: ... and convert it to a BNC or other single ended cable system as close to the signal source as possible This ensures a minimum influence from external hum and noise Output connector The output connector is a 4 pole Speakon NL4MP type 1 and 2 are connected together to form the out put and 1 and 2 are connected together to form the output Connecting to a speaker Connect the amplifier to the speaker Co...

Страница 15: ... noise generator is a random type with a repetition period in excess of 4 hours It features 3 different noise types Pink Red White and White The output can be attenuated in 5 dB steps by the level selector from 0 to 35dB in addition to signal off Connecting other noise generators than found in Norsonic sound level meters may damage the loud speaker If usinger other sources make sure the maxi mum o...

Страница 16: ...ied Nor280 Several hand switches can be programmed for one or more amplifiers or vice versa The procedure is as follow Switch on the amplifier Push a small rod paperclip into the tiny hole located to the right above the mains switch This activates a push button Press and release the button located on the remote hand switch Repeat the press and release Wait 20 seconds The hand switch is now program...

Страница 17: ...and parts only with any return carriage being for the customers account Repair due to misuse of the equipment fair wear and tear and or use of non approved third party hardware soft ware or interfacing is not covered by this warranty Batteries dry cells or rechargeable or other consumable items are not covered by this warranty No other warranty is expressed or implied including but not limited to ...

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Страница 19: ...pliant radio transmitter modules complies with ETSI330 220 and ETSI300 683 and part 15 of the FCC Rules as applicable see Specifications This product has been manufactured in compliance with the provisions of the relevant internal Norsonic production standards All our products are tested individually before they leave the factory Calibrated equipment traceable to national and international standar...

Страница 20: ... for acoustics from sound calibrators microphones preamplifers via small handheld sound level meters to advanced yet portable real time analysers but also building acoustics analysers and complete community industry and airport noise monitoring systems Contact your local representative or the factory for information on our complete range of instrumentation ...

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