User manual JBL TI K

[. . . ] It's so easy to recognize, yet so difficult to attain. JBL craftsmen have been involved in the art of sound for more than a generation ­ signal and source, wood and fabric, transducers and acoustics ­ all of it. Today these craftsmen continue to perform to the most rigid standards any craftsmen can submit to: those imposed upon themselves. JBL transducers and electronics offer what has been characterized by devoted music listeners as "the incomparable JBL sound". [. . . ] all connections should be inspected and cleaned or remade periodically. Frequency of maintenance depends on the materials involved in the connection, atmospheric conditions and other factors. consult your dealer for specific recommendations. It is essential that both loudspeakers in a stereo system have the same polarity with respect to the input signal (are in "phase"). JBL Ti speakers are designed to produce a positive pulse when a positive signal is applied to the red input terminal. If the driver cones of the two loudspeakers do not move in the same direction for a given voltage at the input terminals, there will be a lack of stereo definition and a loss of deep bass. We recommend experimenting with the polarity of the speakers, since recordings, program sources or power amplifiers can invert the polarity of the signal. the "correct" connection is the one that yields the best audible results. Be sure to reverse both left and right connections to keep the systems in polarity. IMPORTANT: When connecting or disconnecting loudspeakers from an amplifier, the amplifier must be turned off. Making connections while the amplifier is operating could seriously damage the loudspeaker system and void the warranty. The amplifier must also be turned off before connecting or disconnecting cables at the amplifier or pre-amplifier inputs. These recommendation are given as MINIMUM requirements, and generally speaking, the speaker leads should be as short as possible. speaker wire and interconnect cables are important components in an audio system. With all other factors at an appropriate level of quality the speaker cable and the interconnect cable can make significant contributions to the perceived sound quality. Careful selection of cable and interconnect can add or subtract marked shadings in tonal character. Likewise, different cables can have quite a dramatic impact on the dynamic contrasts experienced by listeners. The same care that was given to the internal system wiring in the JBL TI speakers should be afforded to the selection and application of the cable that will connect the various components in your system. Your JBL Ti Series dealer has the experience and knowledge to recommend suitable interconnects and speaker wire to best complement your system. the length of the speaker wire will depend on the location of the loudspeakers and the amplifier. Since the final positioning of the loudspeaker will be determined by careful listening, you may want to arrange a temporary wiring layout that will allow the moving of the loudspeaker to experiment with placement. When the best loudspeaker position is determined, permanent connections may be made using the shortest cable runs possible. [. . . ] Occasional cleaning with a clean, soft cloth will maintain the original beauty of the finish. The beautiful deep gloss finish is the result of a meticulous multistep painting and polishing procedure. The surface should be treated very carefully to avoid scratching the finish. Only lint-free cotton cloths should be used for dusting. [. . . ]