In de manual valt te lezen ......
The KP65's external pad input jack (PAD IN) can be used to send two trigger signals, one from the KP65 and
another from an external pad connected to the KP65, to the DTX Series Drum Trigger Module via a supplied
single stereo cable q.
* When using the KP65 with an external pad, make sure the following inputs on the DTX Series Drum Trigger Module
are used. [DTXPRESS: 9/10, DTX: 9/10, 11/12, DTXTREME: 9/10-15/16, DTXPLORER, DTXPRESS IV: 8/9]
* Either a stereo or mono phone cable can be used to connect the external pad to the KP65.
* Any pad that is designed for use with the DTX Series Drum Trigger Modules can be used as an external pad however,
the sound produced by the rim will not be produced when a pad equipped with a rim switch (TP65S, PCY65S,
etc.) is connected to the KP65. In this case, the rim switch functions (choke, mute) cannot be used.
De DTXpressIII wordt niet expliciet genoemd, hoeft niet persé iets te betekenen, het zou kunnen dat met 'DTXPRESS' ook de '3' wordt bedoeld, in dat geval moet je dus triggerinputs 9/10 gebruiken.
Verder vond ik nog het volgende:" on your module you can connect to input 9/10. The kick will appear on input 9, the attached pad will appear in input 10."