Yamaha APX4 Owner's Manual
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PRECAUTIONSThe output jack is an EIAJ-standard 1/4" phone jack. Be sure to usean appropriate connection cable.Always set the VOLUME control to “0” when plugging in orunplugging the connection cable.The battery check indicator (BATT.) will light briefly when a plug isinserted or removed from the output jack. This is normal and does notindicate a malfunction.The built-in preamplifier is automatically turned on when a plug isinserted into the output jack. When not using the instrument, or whenplaying it without amplification, be sure to remove the plug from theoutput jack so that the preamplifier power is turned off.Also, even when the power is switched off, the system consumes a smallamount of power for the tuner standby mode. If the instrument is notgoing to be used for an extended period of time, we recommend that thebattery be removed in order to avoid power consumption or leakage.Owner’s ManualThank you for choosing a Yamaha electric-acoustic guitar.In order to make the most of the advanced features andperformance provided by your guitar, please read thismanual carefully before using the instrument.BATTERY REPLACEMENTBe sure to replace the battery as soon as possible when the batterycheck indicator lights in order to avoid reduced sound quality.* Be sure to remove the battery if the instrument will not be used for an extendedperiod of time in order to prevent possible damage due to battery leakage.q Press the catch on the battery holder in the direction indicated by the arrowin the illustration in order to unlock it.w Slide out the battery case.e Remove the old battery from the battery case, and insert the new battery makingsure that the (+) and (–) terminals of the battery are positioned as shown in theillustration. Use only a DC9V, S-006P (6F22) or equivalent battery.r Slide the battery case back into the battery holder and press firmly sothat the battery case locks into place.ELECTRICACOUSTIC GUITARBattery HolderControl SectionNOMENCLATUREOutput Jack (with power switch function)SPECIFICATIONSSystem SYSTEM-56: Monaural 1 wayPickup Contact Pickup (installed inside of the body)Pre-amplifier Controls VOL., 3 Band (HIGH, MID, LOW) EQcontrol, AMF controlOutput jack Combination end pin/power switchOutput impedance 1 kΩPower supply 9V DC, S-006P (6F22) dry cell batteryBattery life Approx. 90 hours (without tuner)Approx. 85 hours (with the preampswitched ON and the tuner used 1 minuteevery 1 hour)* When using a manganese battery.* Varies according to operating conditions.Tuner Tuning System: Chromatic type (12semitones), A4=440HzAuto OFF Function: Tuner automaticallyswitches OFF after 2 minutes.Input: Built in pickupAccuracy: +/– 3 centsAccessories • Hexagonal wrench for neck adjustment x1• S-006P (6F22) dry cell battery x1• Sound hole cover x1THE CONTROLSUSING THE TUNERThe guitar is equipped with an A4=440Hz standard pitch tuner. Thetuner’s circuitry is independent from the guitar’s output circuit soswitching the tuner ON/OFF will have no affect on sound output.q Press the TUNER switch. While the tuner activates the and lampslight alternately.w Tune the guitar string until the note name of the desired pitch appears inthe tuner’s display.The lamp indicates the pitch is low.The lamp indicates the pitch is high.The pitch indicator ( ) flashes slower as the string’s pitch nears thenote shown in the display.e The string is in tune when the and lamps both light.* The tuner will automatically switch OFF approximately two minutes after theTUNER switch is pressed (energy saving function). To continue tuning, pressthe TUNER switch again.* It may take a few seconds before the tuner can detect pitches after being switched ON.* The note name and displays may have difficulty keeping up with irregularpitch changes. Gradually change the pitch and check when tuning.* The tuner may have difficulty detecting notes rich with overtones or with veryshort sustain.qw ertye 3 Band EqualizerLOW : Boosts or cuts the level of the low frequencies.MID : Boosts or cuts the level of the middle frequencies.The AMF control r adjusts the center frequency of the bandaffected by this control.HIGH : Boosts or cuts the level of the high frequencies.r AMF ControlSets the center frequency of the band of frequencies affected by the MIDequalizer control. The range is from 80 Hz to 10 kHz.* This control has no effect when the MID equalizer control is set to its center(“0”) position.t Tuner SwitchSwitches the tuner ON/OFF.y Tuner DisplayDisplays tuner information.q VOL. (Volume) ControlAdjusts the overall output volume level.* Make sure that the VOL. is turned to “0”before connecting or disconnecting.w BATT. (Battery Check) IndicatorThis indicator will light when the batteryneeds to be replaced.Please replace the battery as soon aspossible when the BATT. indicator lights.Sound Hole Cover(Accessory)Feedback often occurs when controls are boosted on the electric acousticguitar to match the volume of other instruments when playing in a band.When the instrument is used under the conditions described above, theSound Hole Cover should be inserted into the sound hole.With the Sound Hole Cover in place, feedback is effectively reduced.USING THE SOUND HOLE COVEROPENCatchDC9V S-006P(6F22)Battery caseqOPENw, r ewrPickup |
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