User manual SONY SA-W303

[. . . ] When turning on or off an amplifier or other equipment When using the double (A+B) sets of speakers, make sure that you select the "A+B" position with your amplifier. When you are using speaker terminal (A) only (front speaker only) or when the power of the amplifier is turned off, turn down the volume or turn off the power of the woofer otherwise, hum noise may be heard. If the sound distorts when you turn on the bass reinforcement from your amplifier (such as, DBFB, GROOVE, the graphic equalizer, etc. Selecting NORMAL or REVERSE with the PHASE selector reverses the polarity and may provide better bass reproduction in certain listening environments (depending on the type of front speakers, the position of the woofer and the adjustment of the cut-off frequency). [. . . ] Select the setting that provides the sound you prefer when listening in your normal listening position. With the magnetically shielded type of the speaker system, the speakers can be installed near a TV set. However, color irregularity may still be observed on the TV screen depending on the type of your TV set. To prevent speaker vibration or movement while listening, attach the supplied foot pads to the speaker. Connecting to an amplifier with a special jack for a subwoofer If your amplifier has a special jack for a subwoofer (like a MONO OUT jack, MIX OUT jack, SUBWOOFER jack or SUPER WOOFER jack), connect the LINE IN jack of the woofer to one of those jacks. If you experience any of the following difficulties while using the woofer, use this troubleshooting guide to help you remedy the problem. Should any problem persist, consult your nearest Sony dealer. T Turn off the TV set once, then turn it on after 15 to 30 minutes. T Place the speakers further apart from the TV set. Connect the MONO OUT jack of your amplifier to the LINE IN jack of the woofer with the supplied audio connecting cord. If the output level of your amplifier is not large enough, the sound may not be loud enough. If this happened, move the woofer away from the center of a room or eliminate the cause of the standing wave, by installing a bookshelf on the wall, etc. ) or the equalizer output to a high level or input sinewaves of 20 Hz to 50 Hz recorded on a commercially-available test disc or special sound (bass sound of electronic musical instrument, pop noise of analog disc turntable, sound with abnormally enhanced bass, etc. These actions may cause damage to the speakers. When a special disc containing abnormally enhanced bass is played, noise may be output in addition to the original sound. The subwoofer output signal (DOLBY digital (AC-3) signal) of the digital surround processor sold singularly is set 10 dB higher by Dolby laboratories Licensing Corporation. Use the LINE IN jacks or the SPEAKER IN terminals of the woofer when you connect the amplifier. ⷠIf your amplifier has one of the following types of output jacks, connect the LINE IN jack and the amplifier's jack using the supplied audio connecting cord. -- MONO OUT jack -- MIX OUT jack -- SUBWOOFER output jack(s) -- SUPER WOOFER output jack(s) · If your amplifier does not have the above mentioned output jacks, connect the speaker terminals of the amplifier to the SPEAKER IN terminals instead. You can adjust the sound of the woofer to suit the sound of your front speakers. Reinforcing the bass sound gives you a greater sense of atmosphere. Before you get started ⷠTurn off the power of the amplifier and the woofer before making any connection. [. . . ] Before you get started ⷠTurn off the power of the amplifier and the woofer before making any connection. ⷠUse the audio connecting cords that are supplied to the respective equipment. If there are not enough audio connecting cords to make the necessary connections, you need to purchase some optional audio connecting cords. ⷠBe sure to make connections firmly to avoid noise. [. . . ]