User manual JBL L212

[. . . ] It does not make any difference which of the two strands of wire go to (+) and (­) on the speakers and amplifier, as long as both speakers are connected identically. If using wire ends, unscrew the colored nut on the terminal cup, insert the wire end into the hole in the metal post, then retighten the nut until the wire is tightly secured. If using banana plugs, simply insert the plug directly into the holes on the top of the metal posts. For each channel, the red terminal on the loudspeaker should be connected to the red or (+) loudspeaker connection terminal on the receiver or amplifier, and the black to the black or (­) speaker connection terminal (see Fig. [. . . ] Connecting the loudspeakers out of phase will not damage them, but will result in less bass and poor imaging. CONNECTIONS To connect the loudspeaker systems to the receiver or amplifier, use two-conductor insulated wire. Your JBL dealer can recommend suitable cables, or you can buy wire at most hardware or electronic stores. If your speakers are more than 30 feet (10 m) from your receiver or amplifier, use larger diameter wire. Connections are made at the terminals located on the back of the loudspeaker system. The terminals accept bare wire or dual banana plugs, either of which will provide easy, secure connections. Left Speaker Red Blk. (+) (­) Preparing the hookup wire Carefully plan your wire lengths before cutting any speaker wire. Be sure to allow plenty of extra wire to help hide paths in corners, along baseboards, etc. First determine the wire length needed between the most distant speaker and the receiver or amplifier. Now make the hookup wires for both speakers this length, even if one loudspeaker is much closer to your amplifier than the other. At this point you need to identify a visual difference between the two conductors of each molded pair of speaker wire. The polarity (+ & ­) of one speaker has been reversed relative to the other. If you are still encountering problems, consult your JBL dealer. 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 rating per channel must not exceed the maximum recommended amplifier power for that specific loudspeaker model. Following these guidelines will provide distortion-free sound reproduction and long loudspeaker life. 3 CF SERIES LOUDSPEAKERS FUSE REPLACEMENT The CF120 & CF150 have fuses which will protect the speaker from being overpowered 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. SERVICE Should your loudspeaker ever need service, return it to the JBL dealer from whom it was purchased. [. . . ] Replacement with any other type fuse will void your JBL warranty. SERVICE 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: Mohawk Marketing Corp. 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. [. . . ]