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17. Attachment – Do not use attachments not recommended by the appliance manufacturer as they may cause hazards. 18. Replacement parts– When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original parts. Unauthorized substitutions may result in fire, electric shock, or other hazards. 19. Safety check – Upon completion of any service or repairs to this appliance, ask the service technician to perform safety checks to determine that the appliance is in proper operating condition. 4 EN Installation The Subwoofer is a virtually omnidirectional speaker, so it can be installed in almost any location. For example, the Subwoofer can be installed next to the component system (consisting of an amplifier, tuner, cassette deck, etc.), or in a corner of the room, etc.. The subwoofer’s deep-bass reproduction characteristics are richest when the subwoofer is installed in a corner or near a wall. Since the low-bass component in music is usually monaural, only one subwoofer is necessary to obtain a sufficient stereo effect when used in combination with a stereo music system. Wall Near the wall BA Far from the wall C Near the corner Speaker installation position, viewed from above Near the corner A B Near the wall Frequency C Far from the wall Connections Howling If the Subwoofer is installed near an analog record turntable, a howling sound may be generated. If this occurs, place the Subwoofer farther away from the turntable or reduce the Subwoofer volume (By rotating the VOLUME control counterclock-wise). The howling phenomenon may also occur due to cross interference with a cassette deck, compact disc player, or Laserdisc player, although this is very rare. If sound or picture seems to be distorted due to this reason, place the Subwoofer farther away from other components or reduce its volume. Operation near a TV If the Subwoofer is installed near a TV set, the TV reception may be affected and interfered with color irregularities. Should color irregularities observed on TV screen, separate the Subwoofer from the TV until its reception becomes normal. Caution To assure ventilation, observe the following points when installing the unit. Vertical installation • Leave a distance of more than 10 cm between the Subwoofer back and the surrounding wall(s). Use special care not to cover the heat sink with a curtain, etc. when installing. • Be sure to install the Subwoofer vertically. ENGLISH Sound Pressure Level Wall Before connection: Set the POWER switches of the amplifier and Subwoofer to OFF. If they are connected with the POWER switch(es) left ON, one or both components may be damaged. SUBSUB WOOFEROOFER LINE INPUT SUBWOOFER PRE OUT Amplifier or Receiver Pin-plug cord If your amplifier or receiver outputs only the L/R separated, line-level signals, it is required to use an adapter for synthesiz- ing the L and R signals (not provided) in order to connect the Subwoofer to such an amplifier or receiver. 5 EN Controls and indicators ENGLISH 1 1 POWER ON indicator 2 2 LINE INPUT jack (RCA-type pin-plug) This jack is used to connect the subwoofer Pre-Out jack of the amplifier. 3 3 VOLUME control knob Adjusts the volume level of the output of the Subwoofer. Rotating the knob clockwise increases the volume level, and rotating the knob counterclockwise decreases the 4 volume level. 4 POWER switch Switches the power ON and OFF. 5 5 Power cord Connect to AC outlet. Caution concerning operation An excessive input level to the Subwoofer may impair the sound quality or damage the unit. Careful attention should therefore be paid to the following precautions. Notes: 1. Do not increase the output of the amplifier to a high level while the low-frequency level is enhanced by the amplifier’s tone control or loudness control. 2. When operating the amplifier switches or when placing the stylus on an analog record, set the amplifier volume to its minimum level. Specifications Caution: Read this page carefully to ensure safe operation. Type ...................... Subwoofer system with built-in amplifier [Amplifier] Dynamic Power ................................................. 100 W (6.) (For U.S.A. and Canada) Rated Output Power (FTC) 75 W RMS, at 6 . 150 Hz, with no more than 0.7 % T.H.D. Input Sensitivity & Input Impedance ........ 200 mV (43 k.) Rated Power Consumption ........................................ 70 W Frequency Responce ................................... 35 Hz ~ 200 Hz (For other countries) Rated Output Power ....................... 75 W RMS (150 Hz,6.) Input Sensitivity & Input Impedance ........ 200 mV (43 k.) Rated Power Consumption ........................................ 70 W Frequency Responce ................................... 35 Hz ~ 200 Hz [Speaker] Enclosure .......................... Bass-Reflex, Floor Standing Type Speaker Units ............................ 160 mm (6-1/2") Cone type Nominal Impedance ..........