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N28II Northridge Series
Technical Manual
N28II
Northridge� Series
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
� � � � � Nominal Impedance Max Amp Power Frequency Response Sensitivity Crossover Frequency 8 ohms 150 watts* 50Hz � 20kHz (�3dB) 90dB (1 watt @ 1 meter) 4000Hz
AURAL SWEEP TEST SPECIFICATIONS:
� System Aural Sweep Test � L.F. Aural Sweep Test � H.F. Aural Sweep Test 6.0V Input 50Hz to 20kHz 5.0V Input 50Hz to 5kHz 2.83V Input 3kHz to 20kHz
PHYSICAL SPECIFICATIONS:
� Enclosure Dimensions (H x W x D) � Weight 19-1/2" x 10-1/2" x 11-1/4" 495mm x 267mm x 286mm 36 lb/16.4kg (sold in pairs)
SYSTEM COMPONENTS:
� Cabinet N28II (not for sale) � Grille 337784-001 � Low-Frequency Transducer 8" (203mm) PolyPlas� cone, DC Resistance shielded (335469-002) 4.5 ohms ±10%
WARRANTY:
� Refer to Warranty Statement packed with each product. * The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks. We do not recommend sustained operation at these maximum power levels.
� High-Frequency Transducer 3/4" (19mm) titanium-laminate dome, shielded (338035-001) DC Resistance 3.0 ohms ±10% � Crossover Network 335589-002
WIRING DIAGRAM PACKAGING
Driver High Frequency 338035-001 YELLOW YELLOW/BLACK Driver Low Frequency 335469-002 Network 335589-002
Upper/Lower Foam 337767-001
OWNER�S MANUAL
�
+
Owner�s Manual 338061-001 Warranty Card 338322-001 Survey Card 331384-001 Felt Pads 335634-001
Plastic Bag (2)
GREEN GREEN/BLACK
N28II SCHEMATIC
RED
+IN
�
L3 0.2µH
GREEN 14"
250 + L.F.
INPUT
�IN
BLACK
GREEN/BLACK 14"
205
�
Outer Carton (Black) 337766-001
R2 1.8 OHM/10W
C2 4µF/100v YELLOW 18"
205 +
L4 0.1mH
H.F.
110 �
YELLOW/BLACK 18"
JBL Consumer Products, 250 Crossways Park Dr., Woodbury, New York 11797
09/02
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