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Note When you are using SPEAKER A terminal (front speaker) only or when the power of the amplifier is turned off, turn down the volume or turn off the power of the subwoofer. Otherwise, hum noise may be heard. Connecting to an amplifier with a special jack for a subwoofer If your amplifier has a special jack for a subwoofer (such as MONO OUT jack, MIX OUT jack, SUBWOOFER jack or SUPER WOOFER jack), connect the INPUT jack of the subwoofer to one of those jacks. Hookups (D) Connect the MONO OUT jack of your amplifier to the INPUT jack of the subwoofer with the supplied audio connecting cord. Note If the output level of your amplifier is not large enough, the sound may not be loud enough. In this case, connect the speaker terminals of the amplifier directly to the SPEAKER IN terminals of the subwoofer. Connecting the AC power cord • Connect the AC power cord from the subwoofer and from your amplifier to a wall outlet. • Make sure that power to the subwoofer is turned off before you plug in or unplug any power cord. Listening to the Sound (E) 1 Turn on the amplifier and select the program source. 2 Press POWER. The subwoofer turns on and the POWER indicator lights up in green. 3 Play the program source. Adjust the VOLUME so that sound from the front speakers is not distorted. If it is distorted, the sound from the subwoofer will also be distorted. Notes • Never set the amplifier’s tone control (BASS, TREBLE, 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.) in a high level to this unit. 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. In such a case, reduce the sound level. • The subwoofer output signal (DOLBY digital signal) of the digital surround processor sold singularly is set 10 dB higher by Dolby laboratories Licensing Corporation. In the case of using normally, adjust the subwoofer level. Adjusting the Sound (F) You can adjust the sound of the subwoofer to suit the sound of your front speakers. Reinforcing the bass sound gives you a greater sense of atmosphere. 1 Adjust the cut-off frequency. Turn the CUT OFF FREQ control, depending on the reproduction frequencies of your front speakers. Refer to the following when adjusting. 1 Typical very small sized speakers: 5 – 7 cm dia. 2 Typical small sized speakers: 8 –15 cm dia. 3 Typical medium sized speakers: 16 –24 cm dia. 4 Typical large sized speakers: more than 25 cm dia. 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. 2 Adjust the volume level of the subwoofer. Turn the LEVEL control so that you can hear the bass sound a little more than before. To increase the volume, turn the control clockwise. To reduce the volume, turn the control counterclockwise. Amplifier This subwoofer Amplifier Amplifier B1 2 C1 2 Amplificateur R L L R SPEAKER IN OUT SPEAKER This subwoofer Caisson de grave E Power indicator Power indicateur POWER 3 Play your favorite song and movie. Male vocal tunes and voice containing bass sounds are most suitable for adjustment. Turn the volume for front speakers to the same level as usual. 4 Select the phase polarity. Use the PHASE selector to select the phase polarity. 5 Repeat steps 1 to 4 to adjust for your preference. Once you have adjusted the subwoofer to the settings you want, use the VOLUME control on the amplifier to adjust the volume of the subwoofer with that of the other speakers. You don’t need to adjust the subwoofer settings when you change the volume level of the amplifier. Notes • If the sound distorts when you turn on the bass reinforcement from your amplifier (such as, DBFB, GROOVE, the graphic equalizer, etc.), turn off the bass reinforcement and adjust the sound. • Do not turn the volume of the subwoofer to maximum. Doing so may weaken the bass sound. Moreover, extraneous noise may be heard. • 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 subwoofer and the adjustment of the cut-off frequency). It may also change the expanse and tightness of sound, and effect the feeling of the sound field. Select the setting that provides the sound you prefer when listening in your normal listening position. Setting the speaker (G) To prevent speaker vibration or movement while listening, attach the supplied foot pads to the speaker. Troubleshooting If you experience any of the following difficulties while using the subwoofer, use this troubleshooting guide to help you remedy the problem. Should any problem persist, consult your nearest So...