User manual JBL S38IICH

[. . . ] 9/01 2 SPEAKER PLACEMENT Proper placement of the speakers is an important step in obtaining the most realistic soundstage possible. These recommendations are for the optimum placement of the loudspeakers. Use these placement recommendations as a guide. Slight variations will not diminish your listening pleasure. [. . . ] The logo may be oriented as For stereo-only applications: Less than 6 ­ 8 feet needed by gently pulling it out slightly, rotating it, and releasing it so that it snaps into place. Although these loudspeakers are designed as a mirrored pair, the decision as to which one is left or right will depend on the amount of space left between them. More than 6 ­ 8 feet A wider stereo image is presented with the tweeter/midrange array outboard, and a tighter image is presented with the array inboard. This placement provides a wide spread in sound, supplemented by the center channel speaker. For home theater applications: 0-2 ft. 3 SPEAKER CONNECTIONS CONNECTION TIPS ­ RIGHT LEFT + ­ + ­+ Speakers and electronics terminals have corresponding (+) and (­) terminals. It is important to connect both speakers identically: (+) on the speaker to (+) on the amplifier and (­) on the speaker to (­) on the amplifier. Wiring "out of phase" results in thin sound, weak bass and a poor stereo image. With the advent of multichannel ­ + Receiver's Speaker Outputs surround-sound systems, connecting all of the speakers in your system with the correct polarity remains equally important in order to preserve the proper ambience and directionality of the program material. To use the binding-post speaker terminals, unscrew the collar until the pass-through hole in the center post is visible under the collar. Insert the bare end of the wire through this hole; then screw the collar down until the connection is tight. The hole in the center of each collar is intended for use with banana-type connectors. MODELS: S310II, S312II These models feature four rubber feet that enable them to be placed on a smooth-surfaced floor, such as tile or hardwood. Four metal spikes are supplied for use when the speaker is to be placed on a carpeted surface to decouple the speaker from the floor and prevent unwanted damping. If the problem has followed the speaker, consult your dealer for further assistance or, if that is not possible, visit our Web site at www. jbl. com for further information. If the system plays at low volumes but shuts off as volume is increased: · Check all wires and connections between receiver/amplifier and speakers. · Make sure all wires are connected. Make sure none of the speaker wires are frayed, cut or punctured. · If more than one pair of main speakers is being used, check the minimum impedance requirements of your receiver/amplifier. If there is no (or low) bass output: · Make sure the polarities (+ and ­) of the left and right "Speaker Inputs" are connected properly. · Consider adding a powered subwoofer to your system for use with digital ". 1" surround formats. If there is no sound from the surround speakers: · Check all wires and connections between receiver/amplifier and speakers. Make sure none of the speaker wires are frayed, cut or punctured. · Review proper operation of your receiver/amplifier and its surround sound features. [. . . ] · Review proper operation of your receiver/amplifier and its surround sound features. · Make sure the movie or TV show you are watching is recorded in a surround sound mode. If it is not, check to see if your receiver/amplifier has other surround modes you may use. · In Dolby Digital or DTS mode, make sure your receiver/processor is configured so that the surround speakers are enabled. [. . . ]