I purchased a couple of stereo splitter adaptors - 1/4” Stereo Plug to Two 1/4" Stereo Sockets similar to these...

...with the aim of duplicating pads from the AUX1 and AUX2 inputs on my TD-12. However, what I find is that with one pad (a PD85) plugged in it works fine with head and rim, but when I plug in the second pad (another PD-85) I lose the rim on both pads. I get the same problem with cymbals - the rim trigger capacity is lost with two pads plugged in. I don't understand why this is happening. Can anyone help?

...with the aim of duplicating pads from the AUX1 and AUX2 inputs on my TD-12. However, what I find is that with one pad (a PD85) plugged in it works fine with head and rim, but when I plug in the second pad (another PD-85) I lose the rim on both pads. I get the same problem with cymbals - the rim trigger capacity is lost with two pads plugged in. I don't understand why this is happening. Can anyone help?
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