User manual JBL 630T

[. . . ] Use only with a cart, stand, tripod, bracket or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer's instructions, and should use a mounting accessory recommended by the manufacturer. Quick stops, excessive force and uneven surfaces may cause the product and cart combination to overturn. Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating, and these openings must not be blocked or covered. [. . . ] Do not overload wall outlets, extension cords, or integral convenience receptacles, as this can result in a risk of fire or electric shock. Never push objects of any kind into this product through openings, as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage or other hazards. Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions: a. Objects have fallen onto, or liquid has been spilled into, the product; or c. The product does not operate normally when following the operating instructions. Adjust only those controls that are covered by the operating instructions, as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation; or e. The product exhibits a distinct change in performance; this indicates a need for service. When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or that have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock or other hazards. Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition. Repeated pressing and releasing of the button provides access to these two modes. VOLUME CTR/REAR LEVEL TREBLE BASS Stereo This mode plays two-channel recordings through the front left and right speakers. 6-Channel Direct Digital If you have a DVD player or surround processor with a built-in Dolby Digital or DTS processor, this mode will provide the best quality surround-sound presentation. MUTE POWER TEST BASS BOOST INPUT HALL/CON. 6-CH STEREO PRO LOGIC ­ VOLUME + CTR / REAR LEVEL + BASS ­ + TREBLE ­ CENTER F/L LEVEL UP REAR LEFT / REAR RIGHT F/R LEVEL UP CENTER + ­ + ­ + ­ + ­ BASS BOOST FRONT LEFT BALANCE FRONT RIGHT 630T ® TM REAR L/REAR R POWER INPUT PRO LOGIC 6-CHANNEL HALL/CONCERT DIGITAL DIRECT STEREO 630T Surround Processor/Amplifier 6-CHANNEL DIGITAL DIRECT INPUTS 9 Test Mode and Level Adjustments Test Tone The test tone is used to calibrate the level settings of the speakers. A static noise will be heard cycling, in order, from the front left, center, right and both surround speakers. Using the remote control, adjust the Center and Surround levels until the volume of all the speakers is the same during the test. When listening to an actual recording, the volume level of the surround channels is generally much lower than that of the front channels. In fact, when listening to a movie, virtually all of the dialogue and a substantial number of effects are reproduced through the center channel. When the test tone is heard from the center speaker, push the + or ­ Ctr/Rear Level button to match the volume of the center channel to the front left and right channels. When the test tone is heard from the surround speakers, push the + or ­ Ctr/Rear Level button to match the volume of the rear channels to the front. When the test tone is heard from the center speaker, push the + or ­ Ctr/Rear Level button to match the volume of the center channel to the front left and right channels. When the test tone is heard from one of the surround speakers, push the + or ­ Ctr/Rear Level button to match the volume of that surround speaker to the front, left and right channels. Repeat step (3) when the test tone is heard from the other surround speaker. [. . . ] · Check all connections between the 630T main unit and each of the speakers. If one or more of the speakers does not play: · Check all connections between the 630T main unit and each of the speakers. · Adjust the balance controls from left to right and front to rear. If you have very little bass output: · Make sure the subwoofer is connected properly to the 630T main unit. [. . . ]