DOWNLOAD JBL N 28 Service Manual ↓ Size: 44.06 KB | Pages: 4 in PDF or view online for FREE

Model
N 28
Pages
4 Few pages! See other manuals at the bottom of the first or last page.
Size
44.06 KB
Type
PDF
Document
User Manual / Operation Manual
Brand
Device
Audio
File
n-28.pdf
Date

JBL N 28 User Manual / Operation Manual ▷ View online

S P E A K E R   P L A C E M E N T
MODEL: N28
5 – 6 ft.
MODELS: N38, ND310
As Front Speakers
As Surround Speakers
O W N E R ’ S   G U I D E
P R O D U C T L I N E :
N O R T H R I D G E S E R I E S
P R O   S O U N D   C O M E S   H O M E
M O D E L   N U M B E R S :
N28, N38, ND310
m
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
listening pleasure.
N28, N38, ND310 OM   8/5/99  4:51 PM  Page 1
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.
S P E A K E R   C O N N E C T I O N S
–     +
–    +
–       +
Speaker Outputs
LEFT
RIGHT
–       +
N28, N38, ND310 OM   8/5/99  4:51 PM  Page 2
Declaration of Conformity
Kongevejen 194B 
DK-3460 Birkerød
DENMARK
Steen Michaelsen
Birkerød. DENMARK. 8/99
 
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
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.
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.
T R O U B L E S H O O T I N G
N28, N38, ND310 OM   8/5/99  4:51 PM  Page 3
S P E C I F I C A T I O N S
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
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
JBL Consumer Products
250 Crossways Park Drive, Woodbury, NY 11797
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 
P R O   S O U N D  
C O M E S   H O M E
*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.
N28, N38, ND310 OM   8/5/99  4:51 PM  Page 4
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JBL N 28 User Manual / Operation Manual ▷ Download

  • DOWNLOAD JBL N 28 Service Manual ↓ Size: 44.06 KB | Pages: 4 in PDF or view online for FREE
  • Here you can View online or download the User Manual / Operation Manual for the JBL N 28 in PDF for free, which will help you to disassemble, recover, fix and repair JBL N 28 Audio. Information contained in JBL N 28 User Manual / Operation Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.