Yamaha F-20 Owner's Manual - Page 1
Yamaha F-20 Manual
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GUITAR AMPLIFIER Owner's Manual Thank you for purchasing a Yamaha F-20 Guitar Amplifier. To get the best results and longest life out of your F-20, we recommend that you carefully read this manual, and keep it in a safe place for future reference. Precautions G To avoid possible damage do not expose the unit to: • direct sunlight • very high or low temperature/humidity • sand or excessive dust * Especially inside a vehicle, the temperature may rise excessively - do not leave the F-20 in your parked car on a sunny day! G Before connecting/disconnecting cables or turning the unit on/off, be sure to set the VOLUME/MASTER VOL. control on the F-20 to 0. G Keep the F-20 away from neon signs or fluorescent lighting to prevent noise pickup. G Handle the unit carefully - never apply excessive force to the controls and avoid dropping the unit. G For safety, always remove the power plug from the AC wall outlet if there is any danger of lightning striking in your area. G To prevent damage and possibly electrical shock, never open the case and tamper with the internal circuitry. G Never use solvents such as benzene or thinner to clean the F-20. Wipe clean with a soft, dry cloth. Specifications Rated Output Power : 20 W Speaker : 20 cm x 1 Controls : VOLUME, GAIN, MASTER VOL., TREBLE, MIDDLE, BASS, CH SELECT switch (A/B) Input/Output Terminals : INPUT, AUX IN, PHONES Power Requirements : U.S. and Canadian models : 120V, 60Hz General model : 230V, 50Hz Dimensions (W x H x D) : 357 x 330 x 197 mm (14.1" x 13" x 7.8") Weight : 6.5 kg (14 lbs 5 oz) * Specifications and external appearance are subject to change without notice. Control Panel q INPUT : Connect your guitar to this jack. w CH SELECT A/B (Channel Select Switch A/B) : Depress the switch (>) to select Channel B which, can be used to create distortion. When the switch is in its raised position (?), Channel A is selected producing a clean, distortion free tone. A Channel e VOLUME : This knob controls the volume level of Channel A. This knob functions only when Channel A is selected (?) with the CH SELECT switch (the Channel A LED will light). B Channel r GAIN : This knob is used to control the amount of distortion. Rotate the knob to the right to increase distortion. This knob functions only when Channel B is selected (>) with the CH SELECT switch (the Channel B LED will light). t MASTER VOL. : This knob is used to control the volume level of Channel B. This knob functions only when Channel B is selected (>) with the CH SELECT switch (the Channel B LED will light). Tone Controls y TREBLE : This knob controls the level of the amplifier's high fre- quencies. u MIDDLE : This knob controls the level of the amplifier's mid frequencies. i BASS : This knob controls the level of the amplifier's low frequencies. o AUX IN : Connect the output of an external audio device such as a CD, MD, cassette deck, etc, to this jack to listen to audio playback of the device, along with your guitar, through the F-20 amplifier. * Use the volume control on the audio device to control its volume level. !0 PHONES : Connect a pair of headphones to this jack. * The speaker will produce no sound when a pair of headphones is connected to this jack. !1 POWER : This is the amplifier's power switch. When the switch is ON, the LED lamp of the channel currently selected with the CH SELECT switch will light. qw e r t y u i o !0 !1