Troubleshooting; A Short Test Drive; Caring For Your L Series Speakers; No Sound At All From Either Speaker - JBL L1 Owner's Manual

A shortt'test drivet'
At this poing it's time to make
sure you made the amplifìer-to-
speaker connêGions correctly -
and then st¿rc enioyinlkheml
l. With the amp/receiver still
turned off, confìrm ttrat its vol-
ume control is turned allthe
way DOWN. NexÇsetthe
BALANCE controlto its center
position. Alsq if the amp/
receiver hasA/B speaker switch,
set ¡t to correspond to the set
of speaker output term¡nals
connected to the L Series
speakers.
2. Now turn on your amp/
receiver and a music source
such as CD player; cassette deck
or FM station.
3. Select that source on the amp/
receiver front panel and press
PLAY on the music source
comPonent
4. GENTLY turn up the volume
control until you hear sound
from both L Series speakers.
(lf one or both channels do
not produce sound, consult
"Troubleshooting" ).
5. Rotate the amp/receiver
BALANCE control allthe way
to the LEFI. Sound should only
come from the left speaker:
lf the sound comes from the
RIGHT speaker with the bal-
ance control LEFI,the speaker
wires have been reversed during
il
hook-up. Turn the amp/receiver
off and switch both sets of
speaker wires.
ó. lf sound moves to the appro-
priate speaker when the
BALANCE control is rot¿ted in
the corresponding direction,
you're ready to enjoy your new
L Series speakers. lf not,
consult "Troubleshooting'.
Caring for your L Series
speakers
In general, a light dusting should
be all the c¿re necessary since the
L Series' cabinet fìnish does not
need waxing or oiling. However; if
the enclosure surhces become
dirty,they may be cleaned with a
damp cloth or a cleaner suiøble
for a sealed wood fìnish. Never
use a pump or spmy cleaner di-
recdy on the speakers since the
over-spnry could be harmfulto the
L Series' speaker cones. lnstead,
apply cleaner to a soft rag and then
wipe it onto the cabine¿
To remove dust from the grille
cloth, use a vacuum with a brush
attachmen¿ Spots may be
removed with a commercial
sPot remover.
Trnoubleshooting
The vast majorÇ of new
speaker "malfunctions" end up
being traced to connections or
switch settlngs. To avoid packing
up correctly functioning speakgrs
and sending them off, only to find
that they're not really at fault" check
tlre following tips fìrst, before
requesting service. '
No sound at all from
either speaker
l. Amp/receiver tape monitor but-
ton pushed in while using CQ
FM or phono inputs.
2. Wrong speaker switch is
pressed if the amp/receiver has
both "A" and "B" sets of speaker
outPuts.
3. Sound source (CD cassette
deck turnable) not turned on,
not activated or not selected on
amp/receiver front, panel.
No sound fiom one speaker
l. Balance control turned all the
way left or righr
2. Speaker wire to that speaker
has become disconnected at
either the speaker or the
amp/receiven
3. One of the connections
between sound source and amp/
receiver is faulty or has become
disconnected.
Both speakers play at lowvol-
umes but shut offas volume is
incrcased OR sound turns on
and offintermittently
l. A few strands of speaker wire
may be shorting out at either
the speakers or amp/receiven
Re-check connections.