EXS24 and Roland TD-20.

The main issue here is that the TD20 sends on notes from the pads, and the EXS24 has samples mapped to notes.

To get the pads to play the samples you want, you often have to do a little mapping work. You could either change the note numbers that each pad sends on the TD20, or you could continually edit the sampler instruments to change which notes trigger which sample.

Either way is tedious and messy, although changing the mappings on the TD20 is the beter method of the two.

Now, the TD20 will probably by default use a fairly close derivative of GM mapping, which means it will basically work for most drum kit instruments, so things shouldn't be too bad.

The most flexible way of handling remapping is to use Logic's Mapped Instrument obkect in the environment. For each incoming note, you can specify and outgoing note, which makes it easy to change which incoming notes from the kit are mapped to which notes that feed the sampler.

In the environment, you can do this on the incoming MIDI stream (ie before it it's the arrange track) or after the arrange track. The first way will record the actual re-mapped notes into your MIDI regions, the second will leave the original notes in the region and remap them in realtime on playback.

If you are not sure how to rig things up in the environment, post back for more specifics - and read the manual stuff on the mapped instrument object to familiarise yourself with how it works.

There are other ways to remap in Logic, but the mapped instrument object is specifically designed for this purpose.

I have to step on my hi-hat pedal very hard to hear the closed hat sound. Is it something related to my TD-20 settings or is it the EXS24? I have the same issue with EZDrummer

The V-Drum modules output quite complex MIDI around the hihat. You've got the various notes sent by hitting the pad on the surface or edge, and the pedal sends controller messages to open/close the hats (the EXS won't respond to this without specific programming). Lastly, when you stamp the pedal, that sends another note to trigger the pedal hat sound.

So, analyse what's happening. Probably the hathat pad is sending an open hat note, with controller data, and is only reverting to a completely closed note when the pad is hard closed.

(It's been a while since I built environment to handle V-Drum hihat pedal behaviour, so I forget the exact details.)

I'm not sure about EZDrummer, but DFH has specific handling for Roland hihat pedals which basically replicates this variable hihat. Unless you wish to build this into your EXS instruments, it won't be this advanced using just plain open/closed samples.

Use monitor objects in the environment to see what MIDI messages the module is sending, and you can build a strategy to modify the behaviour as your need to.

Cool - happy drumming!