Norsonic Nor280 User Documentation Download | Manualshive

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Nor250

Hemi-dodecahedron Loudspeaker

Nor270

Dodecahedron Loudspeaker

Nor280

Power Ampliﬁ er

user

documentation

noise excitation

equipment

Im280_1Ed1R1En

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Summary of Contents for Nor280

Page 1: ...Nor250 Hemi dodecahedron Loudspeaker Nor270 Dodecahedron Loudspeaker Nor280 Power Ampliﬁer user documentation noise excitation equipment Im280_1Ed1R1En ...

Page 2: ...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 informa tion given in this manual in order to take account of new developments If you wish to commun...

Page 3: ...04 Dodecahedron Loudspeakers Nor270 Nor270H 06 Hemi dodecahedron Loudspeaker Nor250 08 Signal Sockets 08 The Nor280 Power Ampliﬁer 11 Speciﬁcations Noise Excitation Systems Contents 10 4 16 8 ...

Page 4: ...lable in several impedance ﬂavours the impedance applicable to yours is stated on the speaker cabinet unless they are of the standard version Both the Nor270 and 270H have been de signed for continuous operation for more than one 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 mount ing easy and safe Speciﬁc...

Page 5: ...ectrum with and without the effects of the equalisation circuitry The loudspeaker Nor 270 270H 70 80 90 100 110 120 130 50 63 80 1 0 0 1 2 5 1 6 0 2 0 0 2 5 0 3 1 5 4 0 0 5 0 0 6 3 0 8 0 0 1 k 1 2 5 k 1 6 k 2 k 2 5 k 3 1 5 k 4 k 5 k L n e t w Sound Power Level L w dB 270 260 equal 270 260 70 80 90 100 110 120 130 50 63 80 1 0 0 1 2 5 1 6 0 2 0 0 2 5 0 3 1 5 4 0 0 5 0 0 6 3 0 8 0 0 1 k 1 2 5 k 1 6 ...

Page 6: ...low frequencies to improve the Nor250 260 system performance The loudspeaker is designed to operate at full power for more than one hour continu ously Speciﬁcations Sound power output Using the Nor280 with pink noise and equalisation 120dB Lin Power rating 250WRMS maximum Impedance 48Ω 12Ω 5 4Ω the latter matches Nor280 specify on order Dimensions 415 235 mm d h Speakers 6 6 5 Weight 11 7 kg 26 lb...

Page 7: ...formance when used for building acoustics Typical third octave band noise directivity pattern for 100 Hz 630 Hz and 3150 Hz centre frequencies in the horizontal plane measured at 15 eleva tion If you need to assemble cable and the Quick Lock connector connect as follows 1 and 2 are to be connected together 1 and 2 are to be connected together 70 80 90 100 110 120 130 50 63 80 1 0 0 1 2 5 1 6 0 2 0...

Page 8: ...h off when the input signal goes off this feature makes the unit well suited to reverberation measurements in areas of low background noise Front panel layout The front panel consist of a source selector a level attenuator a switch selecting the equaliser on off input and output connectors mains connector mains fuse and switch an error indicator and a remote indicator Source selector The Source se...

Page 9: ... The input connector is a 3 pin female XLR The input stage is balanced in order to remove inﬂuence from external noise such as hum and crosstalk A BNC to XLR adaptor is a part of the delivery schedule It is recommended to use a XLR cable from the Nor280 to the external signal and convert it to a BNC or other single ended cable system as close to the signal source as possible This ensures a minimum...

Page 10: ...esults in an over current situation Connecting to a speaker Switch on the ampliﬁer and set the signal attenuator to off Select the noise source or connect the signal input to the ampliﬁer Connect the ampliﬁer to the speaker Caution Consult the table on this page for selecting the level of the noise If your speaker is not listed precaution must be taken in order not to damage the speaker system Inc...

Page 11: ...t 15b class A Licence Exemption Europe The transmitter encoders use ECM compliant radio transmitter modules and com plies with ETSI330 220 and ETSI300 683 USA The device comples with part 15 of the FCC Rules Operation is subject to the following two conditions 1 The device may not cause harmful interference and 2 This device must acceptany interface received including interference that may cause u...

Page 12: ...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 standard...

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