User manual SONY SA-W305

[. . . ] Check that you received the following items: · Since the human ear cannot detect the direction and position where the bass sound being reproduced by a woofer (below 150 Hz) comes from, you can install the woofer wherever you like in your room. To obtain a better bass reproduction, we recommend you to install the woofer on a solid floor where the resonance is unlikely to occur. You can obtain a sufficient heavy bass reproduction from a single woofer. [. . . ] note 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. Connecting to an amplifier with a special jack for a super woofer If your amplifier has a special jack for a super woofer (like a MONO OUT jack, MIX OUT jack, SUB WOOFER jack or SUPER WOOFER jack), connect the LINE IN jack of the woofer to one of those jacks. When using this woofer for both left (L) and right (R) channels Hookups Connect the MONO OUT jack of your amplifier to the LINE IN jack of the woofer with the supplied audio connecting cord. Connect the AC power cord from the woofer and from your amplifier to a wall outlet. If the output level of your amplifier is not large enough, the sound may not be loud enough. ) or the equalizer output to a high level or input sinewaves of 20 Hz to 50 Hz recorded on a commerciallyavailable test disc or special sound (bass sound of electronic musical instrument, pop noise of analog disc turntable, sound with abnormally enhanced bass, etc. When a special disc containing abnormally enhanced bass is played, noise may be output in addition to the original sound. If you hear noise when you turn off the woofer, turn down the LEVEL of the woofer, or turn off the amplifier before turning off the woofer. The sub woofer output signal (DOLBY digital (AC-3) signal) of the digital surround processor sold singularly is set 10 dB higher by Dolby laboratories Licensing Corporation. You can adjust the sound of the woofer to suit the sound of your front speakers. If the sound distorts when you turn on the bass reinforcement from your amplifier (such as, DBFB, GROOVE, the graphic equalizer, etc. Turn the CUT OFF FREQ control, depending on the reproduction 80Hz frequencies of your front speakers. To make the most of the low level converter function of Dolby digital, turn the CUT OFF FREQ as high as possible when playing back the Dolby digital (AC-3). Selecting NORMAL or REVERSE with the PHASE button 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). [. . . ] 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. Do not install the woofer near heat sources such as radiators or air ducts, or in a place subject to direct sunlight, excessive dust, mechanical vibration or shock. [. . . ]