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Manafacture: Yamaha
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manual abstract
To get the best results and longest life out of your GA-15, we recommend that you carefully read this manual, and keep it in a safe place for future reference. •••••••• Precautions••••••••• . 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 GA-15 in a parked car on a sunny day! . Before connecting/disconnecting cables or turning the unit on/off, be sure to set the VOLUME control on the GA-15 to 0. . Keep the GA-15 away from neon signs or fluorescent lighting to prevent noise pickup. . Noise can occur in the vicinity of broadcasting towers for television, radio, etc. Try adjusting the angle at which the amp is placed, or changing the DRIVE-GAIN settings etc. . Handle the unit carefully — never apply excessive force to the controls and avoid dropping the unit. . For safety, always remove the power plug from the AC wall outlet if there is any danger of lightning striking in your area. . To prevent damage and possibly electrical shock, never open the case and tamper with the internal circuitry. . Never use solvents such as benzene or thinner to clean the GA- 15. Wipe clean with a soft, dry cloth. ••••••• Specifications ••••••• Rated Output Power : 15 W Speaker : 16.5 cm x1 Controls : DRIVE-GAIN, DRIVE-VOLUME, DRIVE/CLEAN, CLEANVOLUME, EQUALIZATION-TREBLE, EQUALIZATION-MIDDLE, EQUALIZATION-BASS, POWER Input/Output Terminals : INPUT, PHONES Power Requirements : Japanese model: 100V, 50/60Hz U.S. and Canadian models : 120V, 60Hz General model : 220-240V, 50Hz Dimensions (W x H x D) : 295 x 300 x 190 mm (11.6" x 11.8" x 7.5") Weight : 5 kg * Specifications and external appearance are subject to change without notice. ••••••• Control Panel •••••••• q INPUT Connect your guitar to this jack. w DRIVE-GAIN Controls the level of distortion applied to the DRIVE channel. Turn the control clockwise to increase the level of distortion. Depress the DRIVE/CLEAN switch r to activate the DRIVE function. e DRIVE-VOLUME Controls the output volume level from the DRIVE channel. Depress the DRIVE/CLEAN switch r to activate the DRIVE function. r DRIVE/CLEAN Switches between DRIVE and CLEAN channels. Depress the switch (>) to engage the DRIVE mode and add distortion to the sound. Place the switch in the raised position (?) to place the amplifier in the CLEAN mode and produce sound without distortion. t CLEAN-VOLUME Controls the output volume level from the CLEAN channel. Place the DRIVE/CLEAN switch r in the raised (CLEAN) position. y EQUALIZATION-TREBLE Controls the level of high-range frequencies emitted by the amplifier. u EQUALIZATION-MIDDLE Controls the level of mid-range frequencies emitted by the amplifier. i EQUALIZATION-BASS Controls the level of low-range frequencies emitted by the amplifier. o PHONES Connect a pair of headphones to this jack. * Connecting a pair of headphones to this jack mutes the sound from the speaker. !0 POWER Switches...