User manual JBL SCS 188

[. . . ] They should be placed at about the same height from the floor as the listeners' ears will be, or they may be angled toward the listeners. The center channel speaker should be placed slightly behind the front left and right speakers, and no more than two feet above or below the tweeters of the left and right speakers. It is often convenient to set the center speaker on top of the television set, as shown in the drawing. The two surround speakers should be placed slightly behind the listening position and, ideally, should face each other and be at a level higher than the listeners' ears. [. . . ] Connect this jack to the LFE output or subwoofer output on your receiver or amplifier. Connect each speaker to the corresponding speaker terminals on your receiver or amplifier. Make sure that you have configured your surroundsound processor for "Subwoofer On. " The surround receiver should be configured for 6. 1-channel operation (if available) and the front left, front right, center and rear speakers should all be set to "Small. " If your receiver allows you to set the crossover frequency between the subwoofer and the main speakers, select either 120Hz or 150Hz, or select the setting that is the closest frequency below these. O P E R AT I O N Press the Master Power Switch (marked Power ¡) to the ON position to use the subwoofer. When your receiver or amplifier is off, or is not sending program material to the subwoofer, the subwoofer will be in standby mode. When the subwoofer senses an audio signal, it will automatically turn itself on. If the subwoofer does not sense a signal after approximately twenty minutes, it will automatically go into standby mode. If you will be away from home for an extended period of time, or if the subwoofer will not be used, switch the Master Power switch ¡ to the "OFF" position. PHASE The Phase Control TM determines whether the subwoofer's pistonlike action moves in and out in phase with the main speakers or opposite the main speakers. This is adjusted by pressing the button to the 0°, or 180° position. The 0° position of the phase button plays the bass signal in phase with the main speakers. The 180° position plays the bass signal 180º, or out of phase with the main speakers. Proper phase adjustment depends on several variables such as subwoofer placement and listener position. Adjust the phase switch to optimize bass output at the listening position. Every system, room and listener is different. This switch offers the added flexibility to adjust your subwoofer for optimum performance for your specific listening conditions without having to move your speakers. If at some time in the future you happen to rearrange your listening room, and move your speakers, you should experiment with the phase switch in both positions, and leave it in the position that optimizes bass performance for your taste. ¢ ¡ £ TM HIGH LEVEL +L­ ­R+ OUT IN LINE LEVEL IN LFE L R 0° PHASE 180° IMPORTANT: CONNECT STRIPED WIRE TO RED (+ ) SPEAKER TERMINAL. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AC 230V~50Hz 200 Watts Volume Volume can be adjusted using the Subwoofer Volume Control £, as shown. Crossover The crossover filter between the subwoofer and satellites can be adjusted using the Crossover Control ¢. The Subwoofer Level optimum setting for the SCS 178 and SCS 188 system is with the Crossover Control ¢ set to the "Min" position. Subwoofer Level MIN MAX MIN MAX 7 TROUBLESHOOTING If there is no sound from any of the speakers: · Check that receiver/amplifier is on and a source is playing. [. . . ] Bass Reflex Enclosure 450mm x 250mm x 360mm (17. 7" x 9. 8" x 14. 2") 13. 6kg (30lb) SCS 178 System Frequency Response (-6dB): 35Hz ­ 20kHz Refinements may be made on occasion to existing products without notice, but will always meet or exceed original specifications unless otherwise stated. Simply Cinema is a registered trademark of JBL, Incorporated. * Dolby and Pro Logic are trademarks of Dolby Laboratories. [. . . ]