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2
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0
0
0
0
Noise Excitation Systems
10'4"
16'8"
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A multitude of applications within the fi eld
The difference between the two lies in the
The speakers come with a tripod ensuring
The rugged speaker cabinets are made of fi bre
Verify that your amplifi er has been designed
Both the Nor270 and 270H have been de-
The speaker input socket accepts Speakon
A mounting rod (Ø=1”) makes tripod mount-
Nor270 Nor270H
400 W
2.7
Other impedance values also available, contact factory for details
if ordered with Nor-280
-10
-8
-6
-4
-2
0
2
4
6
8
10
100
125
160
200
250
315
400
500
630
800
1
k
1.25k
1.6k
2
k
2.5k
3.15k
4k5
k
Max.Difference L
eq,360
- L
eq,30
(dB)
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5
70
80
90
100
110
120
130
50638
0
100
125
160
200
250
315
400
500
630
800
1k
1.25k
1.6k
2k
2.5k
3.15k
4k
5k
L-netw
Sound Power Level L
w
[dB]
270 + 260 + equal.
270 + 260
70
80
90
100
110
120
130
50638
0
100
125
160
200
250
315
400
500
630
800
1k
1.25k
1.6k
2k
2.5k
3.15k
4k
5k
L-netw
Sound Power Level L
w
[dB]
270H + 260H + equal.
270H + 260H
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A powerful sound source designed for build-
Annex A (Field measurements), ISO 354,
ASTM E-90, E-336. The source provides
uniform sound radiation. When used with
background levels, high sound insulation
The Nor280 power amplifi er comes with an
The loudspeaker is designed to operate at
Using the
250 W
(maximum)
48
, 12
, 5.4
(the latter
415 × 235 [mm] (d × h)
Speakon NL4FC
with Nor280
Nor1327A
– don’t loosen!
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7
70
80
90
100
110
120
130
50638
0
100
125
160
200
250
315
400
500
630
800
1k
1.25k
1.6k
2k
2.5k
3.15k
4k
5k
L-netw
Sound Power Level L
w
[dB]
250 + 260 + equal.
250 + 260
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The Nor280 Power Amplifi er
The Nor280 is a rugged, lightweight and
The amplifi er comes with a built in noise
To optimise the power where it is needed a
unique built in equalization network com-
A part of the amplifi ers input stage is a high
The output of the amplifi er is short circuit
well suited to reverberation measurements
The front panel consist of a source selector,
The Source selector has four positions:
The Level selector attenuates the output level
The fi nal position switches the signal off.
The equalizer switch selects the equaliza-
The equalization network is adapted to the
When using other speakers, it is recom-
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The signal is turned on again as soon as the
below 100mVrms.
The remote on LED indication is normally
The input connector is a 3 pin female XLR.
The input stage is balanced in order to remove
– signal On/Off
The equalizer circuit
Front panel of Nor280
The high and low pass fi lter is always a part
The error indicator is illuminated and the
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be exceeded:
Nor229
Nor250/270/270H
All dB values are dB re. 1V
assuming an impedance of 5.4
assuming an impedance of 6
The output connector is a 4 pole Speakon
– output.
from ground. Shorting one of the terminals to
ground results in an over-current situation.
The built in noise generator is a random type
with a repetition period in excess of 4 hours.
White and White. The output can be attenu-
without being present in the source room.
The output to the speaker can be switched
Typical range is 100m in free fi eld but will
The remote on LED indication is normally
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The built-in LP and HP fi lters ensure that the output power matches the Norsonic
Weight: 3,5Kg (7,7 lb)
11 x 4,3 x 9,7 (inch)
110Vac (90 - 132Vac, 55-65Hz).
The unit is only safety approved using the following fuses, as appropriate:
Wickman 181 1630 000 (1000pcs) or 002 (10 pcs) (110V) or
Wickman 181 1315 000 (1000pcs) or 002 (10 pcs) (230V)
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
undesired operation.
Mains input lead, BNC to XLR female adapter, Output connector or a complete as-
The remote hand switch is pre-pro-
The procedure is as follow:
Option 1: Wireless remote on/off
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We, Norsonic AS, Gunnersbråtan 2, Tranby, Norway, declare under our sole responsibility that the
The optional remote control transmitter use ECM compliant radio transmitter modules complies
with ETSI330-220 and ETSI300-683 and part 15 of the FCC Rules, as applicable (see Specifi cations)
This product has been manufactured in compliance with the provisions of the relevant internal Norsonic production standards. All
This Declaration of Conformity does not affect our warranty obligations.
The declaration of conformity is given according to EN 45014 and ISO/IEC Guide 22.
Tranby, December 2005
Quality Manager
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