JBL N28 User Manual

5 – 6 ft.

OWNER’S GUIDE

PRODUCT LINE:

NORTHRIDGE SERIES

MODEL NUMBERS:

N28, N38, ND310

PRO SOUND COMES HOME

SPEAKER PLACEMENT

™

Proper placement of the
speakers is an important
step in obtaining the most
realistic soundstage
possible. These recom­mendations are for the

optimum placement of the
loudspeakers. Use these
placement recommendations
as a guide. Slight variations
will not diminish your
listening pleasure.

MODELS:N38,ND310

MODEL:N28

As Front Speakers As Surround Speakers

All of the Northridge Series
loudspeakers referred to in
this guide are video-shielded
and can safely be placed
near a television.

SPEAKER CONNECTIONS

– +– +

– +

Speaker Outputs

LEFT

RIGHT

– +

CONNECTION TIPS

Speakers and electronics
terminals have
corresponding (+) and (–)
terminals. It is important to
connect both speakers
identically: (+) on the
speaker to (+) on the

amplifier and (–) on the
speaker to (–) on the
amplifier. Wiring “out of
phase” results in thin
sound, weak bass and a
poor stereo image.

TROUBLESHOOTING

If there is no sound from
any of the speakers:

• Check that receiver/
amplifier is on and that a
source is playing.

• Review proper operation
of your receiver/amplifier.

If there is no sound coming
from one speaker:

• Check the “Balance”
control on your receiver/
amplifier.

• Check all wires and
connections between
receiver/amplifier and
speakers.

• Make sure all wires are
connected. Make sure none
of the speaker wires are
frayed, cut or punctured.

Declaration of Conformity

If the system plays at low
volumes but shuts off as
volume is increased:

• Check all wires and
connections between
receiver/amplifier
and speakers.

• Make sure all wires are
connected. Make sure none
of the speaker wires are
frayed, cut or punctured.

• If more than one pair of
main speakers is being
used, check the minimum
impedance requirements of
your receiver/amplifier.

If there is no (or low) bass
output:

• Make sure the polarities
(+ and –) of the left and right
“Speaker Inputs” are
connected properly.

If there is no sound from the
center speaker:

• Make sure that your
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.

• Check all connections
between processor/
amplifier and the center
speaker.

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

SPECIFICATIONS

N28 N38 ND310

Description: 2-Way 8" bookshelf 3-Way 8" floorstanding 3-Way dual 10"

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 37Hz – 20kHz

Crossover

Frequency: 4000Hz 1000, 5000Hz 1000, 5000Hz

High-Frequency 3/4" Titanium-laminate 3/4" Titanium-laminate 3/4" Titanium-laminate

Transducer: dome, shielded dome, shielded 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 5-Way binding posts

Dimensions 19-1/2" x 12" x 9-1/2" 31-1/2" x 12" x 10-1/2" 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

floorstanding

*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.

Occasional refinements may be made to existing
products without notice but will always meet or
exceed original specifications unless otherwise stated.

PRO SOUND
COMES HOME

JBL Consumer Products
250 Crossways Park Drive, Woodbury, NY 11797
8500 Balboa Boulevard, Northridge, CA 91329
800-336-4JBL (4525) (USA only)
www.jbl.com
©1999 JBL, Incorporated.
JBL is a registered trademark of JBL, Incorporated.
Part No.

N28/N38/ND310 O/G

™