This tutorial shows how you can use multiple Arpeggiators to trigger notes on a single device.
This allows you to create intricate, interwoven arpeggios of the same sound. For example, one arpeggio could be playing notes in a lower octave at one rate (quarter-notes, for example), while a second arpeggiator plays a sequence of 16th-notes on a higher octave. The interaction of separate arpgeggios with different rates - triggering the same preset sound - can create some really interesting results.
This also works well with PCMSynth presets that have completely different samples mapped across different parts of the keyboard. For example, an imported Soundfont that has a bass sound in the lower octaves and a lead sound in the higher octaves. You could trigger the bass notes with a slow, up-and-down arpeggio while separately triggering the lead notes with a fast, down-hold-up arpeggio.
Hopefully this tutorial will give you some new ideas about using ModSynth's Arpeggiator with the Machine Input module. Go beyond the usual "1 Device = 1 Track of Notes" setup, and create some complex, multi-layered arpeggiated tracks. Give it a try!
Another unique approach. Cool stuff.
I'm posting a file you may be into; I was working on a similar idea and built these panning mods. I threw together a quick approx of your melody, just thought it might interest you. If you un-mute the two PCMS you get a richer sound. There's a lot to mess with inside the mods, I threw them together for this without much tweaking and the preset sounds I used aren't very exciting, I used those because I'm pretty sure they shipped with Caustic. I really can't remember where I got most of my sounds and didn't wanna step on anyone's toes by giving away their possibly paid sounds. The beatbox is a cool preset Skarabee shared that I grabbed randomly for this, so it might not exactly fit either, but it's a cool preset.
Caustic Song file (optional):
This is great.
I have a side-ways question. At 6:35 in the video, you seem to mention the option of copying and pasting synth settings between the 3 different PCMsynths.
I'm wondering if there's a way of doing that, independently of other preset characteristics which I've overlooked?
Thanks for the great video tutorials. You certainly have a talent for them.
Thanks mwise, that's nice to hear. You're right - I did gloss over that bit about copying & pasting synth settings, when I should've explained it. Here's a short video on how I do that. I don't know if it's the best way to do it, but it's a workaround that's been working for me, and it really isn't a big deal to do. Maybe it'll be useful for other Caustic users too.
Or you can save the preset as you want it, and load it up the same, with another PCMSynth machine.....
I can´t thank you enough for these tuts. It´s so useful for me to see real examples, in addition to the machine tutorials (which also are great!), because I can next to nothing about this.

I love it!
Thank you, thank you, thank you!
https://soundcloud.com/squirrelonmars
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I told cha!! (( Give u a hip-bump )) ;)
https://soundcloud.com/squirrelonmars
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Thanks jfMIDI. I can see that simply saving as a new preset as Jason mentions would often be fine, but one application for the method in the video above means that I can even save a favourite synth settings PCMsynth preset as a 'blank template' (without any wav files loaded). Then, whenever I want a blank but with favourite synth settings preloaded, I can load that 'blank template', load my chosen wavs, and save with a different name as a new standard preset.
That feels conceptually neater than overwriting already-in-place wavs when starting with a standard, already populated preset. Perhaps.
Cheers guys!
You can save empty PCM presets as templates. Or any other machines where the default settings aren't quite what you want.
http://m.soundcloud.com/metatronic555
This is what I was getting at with the whole "Copy & Paste synth settings" thing:
http://www.singlecellsoftware.com/node/8683
The way I explained it earlier, it probably seemed kind of limited in its usefulness.
Ah, now I get it.
Thanks all
Very cool ian. Thanks for sharing that. I've been really addicted to the ModSynth. Lately I've been trying to use some of the modules that I typically don't use often - the panning and crossfading modules are great. I'm still amazed at how much Caustic has to offer. I'm really looking forward to the next update, but I'm using only an iPad 2 (still with iOS 6!), so if the Caustic update is as great as it seems like it'll be, I might have to do a hardware/OS upgrade!