JBL Portable Speaker CFSERIES User Manual

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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