Yamaha YDP-S34 YDP-S34_Owners Manual_EN - Page 14

Playing the Piano Intelligent Acoustic Control (IAC) With this function, the sound quality of this instrument is automatically adjusted and controlled according to the overall volume. Even when the volume is low, this lets you hear both low sounds and high sounds clearly. Default setting: On To turn on IAC: While holding down [DEMO/SONG] and [PIANO/VOICE] simultaneously, press the C#2 key. Lowest key C#2 To turn off IAC: While holding down [DEMO/SONG] and [PIANO/VOICE] simultaneously, press the C2 key. Lowest key C2 To adjust IAC Depth: While holding down [DEMO/SONG] and [PIANO/VOICE] simultaneously, press the D2 key to decrease the value, or the E2 key to increase. D#2 (Default) Lowest key D2 (Depth -1) E2 (Depth +1) The higher the value, the more clearly that low and high sounds are heard at lower volume levels. Setting range: -3 - +3 Default setting: 0 (D#2) 14 YDP-S34 Owner's Manual