OWNER’S GUIDE
P RODUCT LINE:
NORTHRIDGE S ERIES
MODEL NUMBERS :
N28, N38, ND310
P RO S OUND COMES HOME™
S P EAKER P LACEMENT
Proper placement of the
speakers is an important
step in obtaining the most
realistic soundstage
possible. These recom-
mendations are for the
optimum placement of the
loudspeakers. Use these
placement recommendations
as a guide. Slight variations
will not diminish your
All of the Northridge Series
loudspeakers referred to in
this guide are video-shielded
and can safely be placed
near a television.
listening pleasure.
MODELS:N38, ND310
MODEL:N28
As Front Speakers
As Surround Speakers
5–6 ft.
TROUBLES HOOTING
If there is no sound from
any of the speakers:
If the system plays at low
volumes but shuts off as
volume is increased:
If there is no sound from the
center speaker:
• Check that receiver/
amplifier is on and that a
source is playing.
• Make sure that your
• Check all wires and
connections between
receiver/amplifier
and speakers.
receiver’s “Center-Channel”
mode is in the ”Normal“ or
”Wide“ position. If it is in
the ”Phantom“ position, the
center speaker will not play.
• Review proper operation
of your receiver/amplifier.
• Make sure all wires are
connected. Make sure none
of the speaker wires are
frayed, cut or punctured.
• Check all connections
between processor/
amplifier and the center
speaker.
If there is no sound coming
from one speaker:
• Check the “Balance”
control on your receiver/
amplifier.
• If more than one pair of
main speakers is being
used, check the minimum
impedance requirements of
your receiver/amplifier.
• Check all wires and
connections between
receiver/amplifier and
speakers.
If there is no (or low) bass
output:
• Make sure all wires are
connected. Make sure none
of the speaker wires are
frayed, cut or punctured.
• Make sure the polarities
(+ and –) of the left and right
“Speaker Inputs” are
connected properly.
Declaration of Conformity
We, JBL Europe A/S
Kongevejen 194B
DK-3460 Birkerød
DENMARK
declare in own responsibility, that the loudspeakers
described in this owner’s manual are in compliance with
technical standards
EN 50081-1:1992
EN 50082-1:1992
Steen Michaelsen
JBL Europe A/S
Birkerød. DENMARK. 8/99
S P ECIFICATIONS
N28
N38
ND310
Description: 2-Way 8" bookshelf
3-Way 8" floorstanding
3-Way dual 10"
floorstanding
Maximum
Recommended
Amplifier Power*: 150W
175W
250W
Nominal
Impedance: 8 Ohms
8 Ohms
8 Ohms
Sensitivity
(2.83V/1m): 90dB
90dB
91dB
Frequency
Response (–3dB): 50Hz – 20kHz
45Hz – 20kHz
1000, 5000Hz
37Hz – 20kHz
1000, 5000Hz
Crossover
Frequency: 4000Hz
High-Frequency 3/4" Titanium-laminate
3/4" Titanium-laminate
dome, shielded
3/4" Titanium-laminate
dome, shielded
Transducer: dome, shielded
Midrange
Transducer: NA
4" PolyPlas™, shielded
4" PolyPlas™, shielded
Low-Frequency
Transducer: 8" PolyPlas™, shielded
8" PolyPlas™, shielded
10" PolyPlas™, shielded
Baffles: Low Diffraction, IsoPower™ Low Diffraction, IsoPower™ Low Diffraction, IsoPower™
Port: FreeFlow™ flared
FreeFlow™ flared
FreeFlow™ flared
Network: Straight-Line
Straight-Line
Straight-Line
Signal Path™ (SSP)
Signal Path™ (SSP)
Signal Path™ (SSP)
Terminals: 5-Way binding posts
5-Way binding posts
31-1/2" x 12" x 10-1/2"
5-Way binding posts
Dimensions 19-1/2" x 12" x 9-1/2"
42" x 14-1/2" x 12-1/2"
(H x W x D): 495mm x 305mm x 241mm 800mm x 305mm x 267mm
1067mm x 368mm x 318mm
Weight: 22.5lbs, 10.2kgs
35lbs, 15.9kgs
55lbs, 25kgs
*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.
P RO S OUND
COMES HOME™
Occasional refinements may be made to existing
products without notice but will always meet or
exceed original specifications unless otherwise stated.
JBL Consumer Products
250 Crossways Park Drive, Woodbury, NY 11797
8500 Balboa Boulevard, Northridge, CA 91329
800-336-4JBL (4525) (USA only)
©1999 JBL, Incorporated.
JBL is a registered trademark of JBL, Incorporated.
Part No.N28/N38/ND310 O/G
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