Related Manuals for Norsonic Nor250
Summary of Contents for Norsonic Nor250
- Page 1 Nor250 Hemi-dodecahedron Loudspeaker Nor270 Dodecahedron Loudspeaker Nor280 Power Amplifier...
- Page 2 Norsonic AS reserves the right to amend any of the informa- tion given in this manual in order to take account of new developments.
- Page 3 Contents 04 Dodecahedron Loudspeakers Nor270 & Nor270H 06 Hemi-dodecahedron Loudspeaker Nor250 08 Signal Sockets 08 The Nor280 Power Amplifier 11 Specifications 10'4" 16'8" Noise Excitation Systems...
- Page 4 Dodecahedron Loudspeakers Nor-270 & Nor-270H A multitude of applications within the field Directivity of the Nor-270 according to ISO 140: maximum deviation from mean for gliding 30° arc. Upper and lower curves are the ISO 140 tolerances. of building acoustics requires the use of iso- tropic sound sources.The loudspeakers Nor- 270/270H have been designed to comply with these requirements and satisfies the ISO 140-...
- Page 5 The sound power level vs. frequency of the loudspeakers Nor270 (upper graph) and Nor270H (lower graph) when used with power amplifier Nor280. 270 + 260 + equal. 270+280+equal The amplifier has an equalisation circuitry de- 270+280 270 + 260 signed to boost the high and low frequencies to improve the system performance when used for building acoustics.
- Page 6 The Nor280 power amplifier comes with an equalisation circuitry that can be switched on or off, designed to boost the high and 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.
- Page 7 Typical third octave band noise ��� ���� directivity pattern for 100 Hz, 630 Hz and 3 150 Hz centre Typical Nor250 third octave band frequency frequencies in the horizontal response when fed with pink noise from the ������� plane, measured at 15° eleva- Nor280 power amplifier, with and without the...
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Page 8: Front Panel Layout
Source selector tion network on/off. The switch should be the frequency bands where it is needed. left in the on position when using Nor250, The Source selector has four positions: The output of the amplifier is short circuit Nor270 or Nor270H loudspeakers for maxi- protected and an automatic system will guard •... - Page 9 output stage or a speaker system with a nominal impedance less than 2 ohm is connected. Signal source Indication of remote • Over temperature. If the temperature ex- selector control status ceeds the temperature limit, the amplifier – signal On/Off is turned off and the cooling fan is turned on at full speed.
- Page 10 The following settings should not be exceeded: The built in noise generator is a random type with a repetition period in excess of 4 hours. Signal type Nor223 Nor229 Nor250/270/270H It features 3 different noise types; Pink, Red/ White/pink noise 0 dB –3 dB 0 dB White and White.The output can be attenu-...
- Page 11 500Wrms (4ohm) and 250Wrms (8ohm) measured as THD+N<0.1%. The remote hand switch is pre-pro- The built-in LP and HP filters ensure that the output power matches the Norsonic grammed for the supplied Nor280. Sev- Nor250 and Nor270 series of dodecahedron loudspeakers.
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Page 12: Declaration Of Conformity
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 standards—has been used to carry out these tests.