YAMAHA DTX OWNER'S MANUAL Pdf Download. wwwalslib›Brands›Yamaha Manuals›Accessories›DTXYamaha defines the note by putting a number that symbolizes the octave, and the “C” in the center of the keyboard is regarded as “C3”. Page 46: Note= (gate Time) DTX internal tone generator if you have the input jack number set to a MIDI note number that triggers a chord or bass voice in the DTX. ![PDF] ELECTRONIC DRUM KIT DTX400K DTX430K DTX450K - Yamaha DTX400K/DTX430K/DTX450K Owner’s Manual 3 SPECIAL MESSAGE SECTION This product utilizes batteries or an external power supply (adapter). DO NOT connect this product to any power supply or adapter other than one described in the manual, on the name plate, or specifically recommended by Yamaha.