CautionsPlease read the following operating precautions before use:• When disconnecting the power cord from an AC receptacle, holdand pull the plug, not the cord.• If the YST-SW20 is not going to be used for a while, disconnect itfrom the AC receptacle.• Since this unit has a built-in power amplifier, heat will radiate fromthe rear panel. Therefore, place the unit at least 10 cm (4 inches)away from the wall. Also, do not position with the rear panelfacing down on the floor or other surface.• Always disconnect from the AC receptacle before making anyconnections.• YST-SW20 does not contain any user serviceable parts. Refer allservicing to your Yamaha dealer.• Do not expose the YST-SW20 to temperature extremes, directsunlight, excessive dust, humidity, or vibration.• Site the YST-SW20 on a level, stable surface. Do not drop theYST-SW20, apply excessive force to its controls, or put heavyitems on top of it.• If the YST-SW20 should require cleaning, use a soft cloth. Ifnecessary, a damp cloth.• Do not to put some objects into it. If doing so, the sound will beunnatural or it may cause damage to the speaker and/or amplifier.• To protect the YST-SW20 speaker, avoid microphone feedback,continuous and excessive output from electronic musical instru-ments, excessive signal distortion,• Although the YST-SW20 is magnetically shielded, keep floppydisks and tapes away from it.• The YST-SW20 may cause picture distortion when sited close to atelevision or computer monitor. In this case, move it away a little.SpecificationsType Active Servo Processing SubwooferSystemAmplifier output 25 W/4 Ω (THD 10%, 100 Hz)High-Cut Filter Low, HighPressure Level 100 dB (max.)Capacity 10.0 lFrequency response 30 to 250 Hz (–10dB)Speaker unit 6.3" (16 cm) cone woofer, magneticshieldingPower supply AC 120 V, 60 HzPower consumption 25 WDimensions (W × H × D) 280 (11") × 200 (7.9") × 289 (11.4") mmWeight 5.9 kg (13 lbs)Accessories Mini plug cable × 1RCA pin plug to mini plug cable × 1RCA pin plug to bare wire cable × 1