JBL CM 40AW (serv.man2) User Manual / Operation Manual ▷ View online
one.
Speaker Placement
TV
TV
0-2 ft.
As front speakers
As rear speakers
CM Center
5 – 6 ft.
1. For a slight downward
angle, do not use either set
of included feet.
angle, do not use either set
of included feet.
The CM Center includes two sets of feet. This gives you a total of
three different options to properly direct the sound toward your
listening position.
three different options to properly direct the sound toward your
listening position.
2. To increase the downward
angle, choose one of the
sets of feet to install.
angle, choose one of the
sets of feet to install.
3. Insert the pin of the
selected foot into the hole in
the rubber section on the
bottom of the speaker.
selected foot into the hole in
the rubber section on the
bottom of the speaker.
Control Series OM 1/21/99 3:48 PM Page 3
Connection Tips
two.
Speaker Connections
– +
– +
Front or Rear Speaker Outputs
LEFT RIGHT
LEFT
RIGHT
–
+
–
+
CM40, CM42, CM40AW, CM42AW
– +
– +
– +
– +
Front or Rear Speaker Outputs
RIGHT LEFT
RIGHT
LEFT
– +
Center Speaker
Output
– +
CM52, CM62, CM52AW
CM Center
Speakers and electronics ter-
minals have corresponding
(+) and (–) terminals. It is
important to connect both
speakers identically: (+) on
the speaker to (+) on the
minals 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 ampli-
fier. Wiring “out of phase”
results in thin sound, weak
bass and a poor stereo
image.
speaker to (–) on the ampli-
fier. Wiring “out of phase”
results in thin sound, weak
bass and a poor stereo
image.
Control Series OM 1/21/99 3:48 PM Page 4
The Control Series Speakers
may be wall mounted. The
customer is responsible for
proper selection and use of
mounting hardware, avail-
able through hardware
may be wall mounted. The
customer is responsible for
proper selection and use of
mounting hardware, avail-
able through hardware
stores, to properly and safely
wall mount the speakers.
This product is not intended
for ceiling mounting.
Optional adjustable wall/
ceiling-mount brackets are
wall mount the speakers.
This product is not intended
for ceiling mounting.
Optional adjustable wall/
ceiling-mount brackets are
available from JBL.
Contact your dealer or call
800-336-4JBL for a dealer
near you.
Contact your dealer or call
800-336-4JBL for a dealer
near you.
three.
Wall Mounting
CM40AW, CM42, CM42AW, CM52, CM52AW
Horizontal
Vertical
Troubleshooting
If there is no sound from
any of the speakers, check
the following:
any of the speakers, check
the following:
• Receiver/amplifier is on and
a source is playing.
• Review proper operation of
your receiver/amplifier.
a source is playing.
• Review proper operation of
your receiver/amplifier.
If there is no sound coming
from one speaker, check the
following:
from one speaker, check the
following:
• Check the “Balance” control
on your receiver/amplifier.
• Check all wires and connec-
tions between receiver/
amplifier and speakers.
on your receiver/amplifier.
• Check all wires and connec-
tions between receiver/
amplifier and speakers.
• Make sure all wires are
connected. Make sure none of
the speaker wires are frayed,
cut, or punctured.
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
the following:
volumes but shuts off as
volume is increased, check
the following:
• Check all wires and connec-
tions between receiver/
amplifier and speakers.
• Make sure all wires are con-
nected. Make sure none of the
speaker wires are frayed, cut,
or punctured.
tions between receiver/
amplifier and speakers.
• Make sure all wires are con-
nected. 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 imped-
ance requirements of your
receiver/amplifier.
main speakers is being used,
check the minimum imped-
ance requirements of your
receiver/amplifier.
If there is low bass output,
check the following:
check the following:
• Make sure the polarity
(+ and –) of the left and
right “Speaker Inputs” are
connected properly.
(+ and –) of the left and
right “Speaker Inputs” are
connected properly.
Control Series OM 1/21/99 3:48 PM Page 5
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