User manual JBL CF120

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Manual abstract: user guide JBL CF120

Detailed instructions for use are in the User's Guide.

[. . . ] Reproduces high-frequency sound waves with accuracy, bringing out clarity and realism. Extends lowfrequency response, reduces distortion and improves power handling capacity. CF 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. 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. [. . . ] However, some speakers may not be usable as a second pair if you want to play two sets at once. Before hooking up another set of speakers besides your CF Series, check the following: 2 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 B. 160 watts RMS into 4 ohms, both channels driven, 20 ­ 20kHz with less than 0. 02% THD. The nominal impedance of the second 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 combination 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. 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. Wrong speaker switch, "A" or "B" speaker output. Sound source (CD, cassette deck, turntable) not turned on, not activated, not hooked up or not selected on amp/receiver front panel. CF120: Blown fuse (see Fuse Replacement). Balance control turned all the way left or right. One of the connections between sound source and amp/receiver is faulty or has become disconnected. 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. [. . . ] 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. Specifications 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 Recommended Amplifier Power* External Dimensions (H x W x D) Weight (each) CF80 2-Way Bookshelf 14 mm Ti Laminate n/a 8" 4. 5kHz 43Hz to 20kHz 92dB 8 Ohms 10 to 100 watts 19-5/8 x 11 x 11-3/8" 498 x 279 x 289mm 23 lbs (10. 4 kg) CF100 3-Way Floorstanding 14 mm Ti Laminate 4-1/2" 10" 1400Hz/7kHz 39Hz to 20kHz 94dB 8 Ohms 10 to 175 watts 27 x 12-13/16 x 11-11/16" 686 x 325 x 297mm 32 lbs (14. 5 kg) CF120 3-Way Floorstanding 14 mm Ti Laminate 4-1/2" 12" 800Hz/7kHz 36Hz to 20kHz 96dB 8 Ohms 10 to 250 watts 31-1/2 x 16-1/2 x 15" 800 x 420 x 381mm 50 lbs (22. 7 kg) CF150 3-Way Floorstanding 25 mm Mylar Laminate 6-1/2" 15" 850Hz/4. 5kHz 32Hz to 20kHz 98dB 8 Ohms 10 to 325 watts 35 x 17-7/8 x 18-15/16" 889 x 454 x 481mm 62 lbs (28. 1 kg) *The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional program peaks. [. . . ]

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