TD-9, TD-9S, TD-9SX: Where is the Serial Number?
The serial number for the TD-9 is located on the underside (bottom panel) of the TD-9 module. It contains 2 letters followed by 5 numbers - (XY-12345).
If you are sending in your warranty registration or rebate info, use the TD-9's serial number only. This represents the entire kit.
Note: It is not necessary to list individual serial numbers for each pad or cymbal.