2 En• This subwoofer system employs Advanced YamahaActive Servo Technology II, which Yamaha hasdeveloped for the production of higher quality, super-bass sound. (Refer to page 14 for details on AdvancedYamaha Active Servo Technology II.) This super-basssound adds a more realistic, theater-in-the-home effectto your stereo system.• This subwoofer can be easily added to your existingaudio system by connecting to either the speakerterminals or the line output (pin jack) terminals of theamplifier.• For effective use of the subwoofer, the subwoofer’ssuper-bass sound should be matched to the sounds ofyour front speakers. You can create the best soundquality for various listening conditions by using theHIGH CUT control and the PHASE switch.• The Automatic power-switching function saves you thetrouble of pressing the STANDBY/ON button to turn thepower on and off.• You can select a bass effect suitable for the source byusing the B.A.S.S. button.• This subwoofer system is equipped with a linear portunique to Yamaha that provides smooth bass responseduring playback, minimizing extraneous noise notincluded in the original input signal.After unpacking, check that the following parts arecontained.To enjoy the high sound quality, stabilize the subwooferusing the non-skid pads.Attach the provided non-skid pads in the four corners of theunderside of the subwoofer to prevent the subwoofer frommoving as a result of vibration, etc.FEATURESQD-Bass TechnologyQD-Bass (Quatre Dispersion Bass) technology is aYamaha unique technology to radiate the soundefficiently in four horizontal directions.SUPPLIED ACCESSORIESATTACHING THE NON-SKID PADSNon-skid pads