User manual JBL SCS 178

[. . . ] 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. [. . . ] Finally, plug the RCA-type patch cords into the line-level inputs on the subwoofer. Connect each speaker to the corresponding speaker terminals on your receiver or amplifier. Left Surround Center Surround Back Right Surround + ­ + ­ + ­ Left Surround + ­ Surround Back + ­ Right Surround + ­ Only in 6. 1 systems Dolby Digital or DTS® (or Other Digital Surround Mode) Connection (SCS 178 and SCS 188) RECEIVER SUBWOOFER LINE LEVEL IN LFE OUT LFE INPUT L R 6 Use this installation method for Dolby Digital, DTS® or other digital surround processors: Use the line-level input jack marked "LFE" for the LowFrequency Effects channel. 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. [. . . ] · Make sure the subwoofer is plugged into an active electrical outlet. · Make sure the powered subwoofer is plugged in and switched on. [. . . ]