2CONTENTSSAFETY INSTRUCTIONS ....................... IIUNPACKING ........................................... IVCAUTION .................................................. 1FEATURES ............................................... 2PLACEMENT ............................................ 3CONNECTIONS ....................................... 4Connecting to line output (pin jack)terminals of the amplifier ....................... 4Connecting to speaker output terminalsof the amplifier ....................................... 6CONTROLS AND THEIR FUNCTIONS ... 8AUTOMATIC POWER-SWITCHINGFUNCTION ............................................... 9ADJUSTING THE SUBWOOFERBEFORE USE ........................................ 10Frequency characteristics.................... 11ADVANCED YAMAHA ACTIVE SERVOTECHNOLOGY ...................................... 12TROUBLESHOOTING ........................... 13SPECIFICATIONS ................................. 14FEATURES• This subwoofer system employs AdvancedYAMAHA Active Servo Technology which YAMAHAhas developed for reproducing higher qualitysuper-bass sound. (Refer to page 12 for details onAdvanced YAMAHA Active Servo Technology.) Thissuper-bass sound adds a more realistic, theater-in-the-home effect to your stereo system.• This subwoofer can be easily added to yourexisting audio system by connecting to either thespeaker terminals or the line output (pin jack)terminals of the amplifier.• For the effective use of this unit, this unit’s super-bass sound should be matched to the sounds ofyour main speakers. You can create the bestsound quality for various listening conditions byusing the HIGH CUT control and the PHASEswitch.• The Automatic power-switching function saves youthe trouble of pressing the STANDBY/ON button toturn the power on or turn it to the STANDBY mode.• You can select bass effect suitable for the sourceby using the B.A.S.S. button.