Yamaha DTXpress/DTXplorer/DTXtreme

Pete

I had the same problem and ended up buying a Yamaha Real Head trigger 
(the one that comes with DTXTREME). I put a Hart Dynamics mesh head 
on it and I love it.

The rim trigger on the Roland PD120 mesh head unit does not generate 
a big enough signal for the DTXpress and the mesh head is very bouncy.

You will need to use 2 inputs for the RHP as the rim trigger is a 
piezo. I use input 2(snare) for the pad and input 9 for the rim. With 
a splitter you can then use your old snare pad on input 10 as another 
tom or a cow bell or ......

Cheers

Warren