Yamaha DD-9 Owner's Manual - Page 5

Setting Up Percussion Pads Striking two percussion pads at the same time produces simultaneous sounds according to the voices assigned to the respective pads. Sensitivity The DD-9's main percussion pads feature touch sensors so that they respond just like acoustic percussion instruments. Striking the percussion pads with different force results in relatively loud or soft sounds accordingly. Be careful not to strike the pads with excessive force as this may seriously damage the percussion pad sensors. Headphones You can use a standard pair of stereo headphones, such as Yamaha's HPE-3 or HPE-150, with the DD-9 for private practice. To connect headphones insert the headphone plug into the HEADPHONES/AUX. OUT jack. The DD-9's internal speakers will switch off automatically when you plug in a pair of headphones. Supplying Power The DD-9 will operate on either an optional power adaptor or optional batteries. w To connect a power adaptor: 1. Connect only a Yamaha PA-1, PA-1B or PA-3 power adaptor to the DC IN jack of the DD-9. 2. Plug the power adaptor into an AC power outlet. +_ HEADPHONES/ DC IN 10-12V AUX. OUT Caution: The use of any other power adaptors may cause serious damage to the DD-9. w To insert batteries: 1. Remove the battery compartment cover located on the bottom of the DD-9. OPEN 2. Insert six (6) 1.5 V "AA" (R-6, SUM-3) or equivalent batteries into the battery compartment. Make sure the polarities are lined up as indicated in the battery compartment. 3. Replace the battery compartment cover securely. Caution: To prevent damage due to battery leakage, remove all the batteries from the instrument when it is not to be used for an extended period of time. ❏ When the batteries are low, replace with a complete set of six new batteries. Never mix old and new batteries or different types of batteries. The batteries are low when the DD-9's voices become noticeably distorted or the DD-9 resets to default settings unexpectedly. 3