JBL Northridge Series User manual

09/02
Technical Manual
ND310II
Northridge™Series
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
•Nominal Impedance 8 ohms
•Max Amp Power 250 watts*
•Frequency Response 37Hz – 20kHz
•Sensitivity 91dB (1 watt @ 1 meter)
•Crossover Frequencies 1000Hz, 5000Hz
SYSTEM COMPONENTS:
•Enclosure ND310II (not for sale)
•Grille 337804-001
•Low-Frequency 10" (254mm) Polyplas™
,shielded
Transducer (2) 335573-002
DC Resistance 10.8 ohms ±10%
•Mid-Frequency Transducer 4" (102) Polyplas™
,shielded
335588-002
DC Resistance 4.4 ohms ±10%
•High-Frequency 3/4" (19mm) titanium-laminate
Transducer dome, shielded 338035-001
DC Resistance 3.0 ohms ±10%
•Crossover Network 335624-002
AURAL SWEEP TEST SPECIFICATIONS:
•System Aural Sweep Test 6.0V Input 30Hz to 20kHz
•L.F. Aural Sweep Test 6.0V Input 30Hz to 2kHz
•M.F. Aural Sweep Test 4.0V Input 500Hz to 6kHz
•H.F. Aural Sweep Test 2.83V Input 4kHz to 20kHz
PHYSICAL SPECIFICATIONS:
•Enclosure Dimensions 42" x 14-1/2" x 12"
(H x W x D) 1067mm x 368mm x 305mm
•Weight 55 lb/25kg (each)
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.
Owner’s Manual
338061-001
Warranty Card
338322-001
Survey Card
331384-001
OWNER’S
MANUAL
Outer Carton
337798-001
Plastic Bag (2 pcs.)
Upper/Lower
Foam
337799-001
PACKAGING
JBL Consumer Products, 250 Crossways Park Dr., Woodbury, New York 11797
ND310II Northridge™Series
— +
— +
Driver Low
Frequency
335573-002
Driver Mid
Frequency
335588-002
Network
335624-002
GREEN/BLACK
GREEN/BLACK
— +
GREEN
GREEN
YELLOW
YELLOW/BLACK
WHITE/BLACK
WHITE
+
—
Driver High
Frequency
338035-001
+—
L.F.
M.F.
+IN
–IN
I
NPUT
+
+
H.F.
250
250
–
+
110
250
+
–
205
110
–
205
–
205
L1
2.8mH
L3
300µH
L2
640µHC1
15µF, 100v
R1
7.5/10W
C2
4µF, 100v
RED
BLACK
GREEN 21"
GREEN 16"
GREEN/BLACK 16"
WHITE/BLACK 34"
WHITE 34"
YELLOW 36"
YELLOW/BLACK 36"
GREEN/BLACK 21"
ND310II SCHEMATIC
WIRING DIAGRAM

Screws (16)
#8 x .75" HX HD
903802-012
Network
335624-002
Flower Pot
334072-001
Woofers (2)
335573-002
Grille
337804-001
Grille Retainers (10)
333249-001
Tweeter Gasket
335633-001
Midrange
335588-002
Faceplate
337793-001
Terminal Cup
335471-001
Enclosure
ND310II
(not for sale)
Screws (4)
#6 x 3/4" BLK,
PPHD 63563
Screws (4)
#6 x 3/4" BLK,
PPHD 63563
Screws (4)
#6 x 3/4" BLK
PPHD
63563
Port Tube
337805-001
Screws (6)
#6 x .75"
HX HD BLK
908302-012 Tweeter
338035-001
Bar, Hold Down
338059-001
Bump-On
Pads (4)
330104-001
Screws (4)
#8 x 1"
HXS-HD BLK
72216
Feet (4)
335429-002
Screws (2)
PPH H/L 6-19 x 5/8 Znc
905402-010
ND310II
Northridge™Series
ND310II Northridge™Series
09/02
JBL Consumer Products, 250 Crossways Park Dr., Woodbury, New York 11797
EXPLODED VIEW