INTRODUCTION
Congratulations on choosing JBL
CF Series Loudspeakers. Their high
efficiency and bass response will greatly
increase your enjoyment of recorded
music. JBL speakers are built with careful
attention to detail, using only the highest
quality materials. They will provide many
years of excellent performance.
CF SERIES
LOUDSPEAKERS
Your CF Series Loudspeakers are very
easy to set up. We recommend that you
take a few minutes to read this owner's
manual before you begin, and follow the
instructions carefully.
OWNER’S
MANUAL
ENGINEERING FEATURES
1. High Efficiency. Modest amplifiers or
receivers will be able to produce acoustic
levels normally associated with amplifiers
of substantially higher power ratings.
2. Cast Frame Woofer. The aluminum die
cast woofer frame offers more rigidity
than a stamped steel frame. The stronger
frame provides a solid foundation for the
magnet assembly and cone & coil result-
ing in a more linear woofer movement
and less distortion. With the aluminum
frame there is no loss of flux from the
magnet assembly (as is the case with
steel frames) allowing the voice coil to
receive the full strength of the magnetic
field.
3. Titanium Laminate Tweeter. Repro-
duces high-frequency sound waves with
accuracy, bringing out clarity and realism.
4. Tuned Port Bass Design. Extends low-
frequency response, reduces distortion
and improves power handling capacity.
PLACEMENT
For the best stereo reproduction, the two
loudspeaker systems should be an equal
distance from your listening position and
separated so that the angle between
them, at the listening position, is between
40 and 60 degrees (see Fig. 1). For
example, if your listening position is 8 to
12 feet (2.5 to 4 m) from each speaker,
the two systems should be about 8 feet
(2.5 m) apart. Placing the loudspeakers in
corners or against a wall will result in the
strongest (not necessarily the most
accurate) bass. The CF80 is ported on
the front to allow placement directly up
against a bookshelf or wall. Since the
other CF Series models are ported on the
back panel, do not place these speakers
closer than 12 inches (305 mm) to the
wall behind it if possible.
CF
S E R I E S
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CF SERIES LOUDSPEAKERS
1. Your receiver or amplifier minimum load
impedance. Impedance is always expressed
in ohms and can be found in the owner's
manual that came with your unit. For
example, the following are typical entries
in receiver/amplifier owner's manuals:
A. 100 watts RMS into 8 ohms, both
channels driven, 20 – 20kHz with less
than 0.02%THD
TROUBLESHOOTING
Most "malfunctions" end up being traced
to connections or switch settings. To
avoid packing up correctly functioning
speakers and sending them off, only to
find that they're not really at fault, check
the following tips first, before requesting
service.
No sound at all or very faint sound
from both speakers
1. Amp/receiver tape monitor button
pushed in while using CD, FM or phono
inputs.
2. Wrong speaker switch, "A" or "B"
speaker output.
3. Sound source (CD, cassette deck,
turntable) not turned on, not activated,
not hooked up or not selected on
amp/receiver front panel.
B. 160 watts RMS into 4 ohms, both
channels driven, 20 – 20kHz with less
than 0.02% THD.
2. The nominal impedance of the sec-
ond set of speakers. A pair of CF Series
speakers when combined with another
pair of 8-ohm speakers will present an
impedance to the receiver/amplifier that is
approximately 4 ohms. This speaker com-
bination can be used with the receiver/
amplifier cited in B above. If the receiver/
amplifier has a specification similar to that
shown in A above, or if your second set of
speakers has an impedance other than
8 ohms, you must consult the receiver/
amplifier manufacturer for clarification.
4. CF120: Blown fuse (see Fuse
Replacement).
No sound from one speaker
1. Balance control turned all the way left
or right.
2. Speaker wire has become disconnected.
3. One of the connections between sound
source and amp/receiver is faulty or has
become disconnected.
POWER HANDLING
Thanks to their high efficiency, JBL
CF Series loudspeakers will produce
reasonable volume levels in a room of
moderate size with very little amplifier
power. However, using a small amplifier to
obtain the desired volume listening levels
may lead to overdriving the amplifier. This
will generate high distortion levels and may
cause damage to your loudspeaker. For
the best performance, an amplifier should
be selected with an output rating that is
greater than the maximum power that will
be used. This margin of reserve power will
ensure that the amplifier will not attempt to
deliver more power than its design allows.
However, the power amplifier's power rat-
ing per channel must not exceed the maxi-
mum recommended amplifier power for
that specific loudspeaker model. Please
see the specifications section for details.
Following these guidelines will provide
distortion-free sound reproduction and
long loudspeaker life.
Both speakers play at low volumes
but shut off as volume is increased OR
sound turns on and off intermittently
1. A few strands of speaker wire may be
shorting out. Recheck the connections.
2. More than 1 pair of speakers are
connected to the amp and the total
impedance is too low. Recheck the
minimum impedance requirements of
the amp.
Bass is very weak AND/OR sound
seems to come from each speaker
separately, without creating a stable
stereo image between the speakers.
1. The polarity (+&–) of one speaker has
been reversed relative to the other.
Double check connections.
2. Speakers are too far away from back
and side walls or too far apart.
Experiment again with the speaker
placement. If you are still encountering
problems, consult your JBL dealer.
3
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CF SERIES LOUDSPEAKERS
FUSE REPLACEMENT
SERVICE
The CF120 & CF150 have fuses which will
protect the speaker from being overpow-
ered under normal conditions. Unscrew the
cap labeled "fuse" and replace with a
250V, 5 x 20mm, slow-blow TDS-type fuse:
2.5 Amp for CF120; 3.0 Amp for CF150.
Replacement with any other type fuse
will void your JBL warranty.
Should your loudspeaker ever need service,
return it to the JBL dealer from whom it
was purchased. If for some reason this is
impractical, in the United States, call
800-336-4JBL for your nearest warranty
station.
Military personnel who purchased from
authorized military outlets should return
them to a similar outlet or contact:
GENERAL CARE
The grille is held in place by pins near
the edges. To remove the grille, grasp it
by both top and bottom edges and pull
gently. To replace, reposition it carefully
and press gently at the corners. Do not
push on the center area of the grille.
The loudspeaker cabinet may be cleaned
with a slightly damp cloth. To remove dust
from the grille cloth, use a vacuum with a
brush attachment. Spots may be removed
with a commercial spot remover. Do not
use any cleaners or solvents on the
speaker drivers themselves.
Mohawk Marketing Corp.
149 Business Park Drive
P.O. Box 62229
Virginia Beach, VA 23462
Phone: 804-499-8901
FAX: 804-497-6690
If purchased outside the United States,
contact your local distributor to make
arrangements for repair service. Do not
return products to the JBL factory.
Specifications
CF80
2-Way Bookshelf
14 mm Ti Laminate
n/a
8"
4.5kHz
43Hz to 20kHz
92dB
8 Ohms
CF100
3-Way Floorstanding
14 mm Ti Laminate
4-1/2"
CF120
3-Way Floorstanding
14 mm Ti Laminate
4-1/2"
CF150
3-Way Floorstanding
25 mm Mylar Laminate
6-1/2"
Application
High Frequency Dome Transducer
Mid Frequency (Polymer Laminate)
Low Frequency (Polymer Laminate)
Crossover Frequencies
Frequency Response (– 6dB)
Sensitivity (1 watt/1 meter)
Nominal Impedance
10"
12"
15"
1400Hz/7kHz
39Hz to 20kHz
94dB
800Hz/7kHz
36Hz to 20kHz
96dB
850Hz/4.5kHz
32Hz to 20kHz
98dB
8 Ohms
8 Ohms
8 Ohms
Recommended Amplifier Power*
External Dimensions (H x W x D)
10 to 100 watts
19-5/8 x 11 x 11-3/8"
498 x 279 x 289mm
23 lbs (10.4 kg)
10 to 175 watts
27 x 12-13/16 x 11-11/16" 31-1/2 x 16-1/2 x 15"
686 x 325 x 297mm
32 lbs (14.5 kg)
10 to 250 watts
10 to 325 watts
35 x 17-7/8 x 18-15/16"
889 x 454 x 481mm
62 lbs (28.1 kg)
800 x 420 x 381mm
50 lbs (22.7 kg)
Weight (each)
*The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional program
peaks. We do not recommend sustained operation at these maximum power levels.
JBL continually strives to improve its products. New materials, production methods and design refinements are introduced
into existing models without notice as a routine expression of our design philosophy. For this reason, JBL loudspeakers
may differ in some respect from their published specifications and descriptions, but will always equal or exceed the original
specifications unless otherwise stated.
JBL Consumer Products, Inc.
80 Crossways Park West
Woodbury, NY 11797
Declaration of Conformity
We, JBL Europe A/S
Kongevejen 194B
DK-3460 Birkerød
DENMARK
8500 Balboa Boulevard
Northridge, CA 91329
declare in own responsibility, that
the products described in this
owner’s manual are in compliance
with technical standards:
EN 50 081-1/1992
EN 50 082-1/3.1995
800 336 4JBL (4525)
Steen Michaelsen
JBL Europe A/S
Birkerød. DENMARK. 2/96
A Harman International Company
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