Yamaha YDP-163 YDP-163_143 Owners Manual - 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 [PIANO/VOICE], press the F♯0 key. To turn off IAC: While holding down [PIANO/VOICE], press the F0 key. Lowest key F♯0 To adjust IAC Depth: While holding down [PIANO/VOICE], press one of the A-1 - D♯0 keys. Lowest key F0 A-1: depth -3 D♯0: depth +3 Lowest key C0: depth 0 (Default setting) The higher the value, the more clearly that low and high sounds are heard at lower volume levels. Setting range: A-1 (-3) - D♯0 (+3) Default setting: C0 (0) 14 YDP-163/YDP-143 Owner's Manual