I thought that the Voltech alchemer's firing sounds were pretty weak sounding in comparison to the cryo and prisma/shadow lines. So I went ahead and beefed up the sound to make it more manly, and thought I'd share it with everybody too.
The raw sound files can be found here:
https://soundcloud.com/cathexis256/voltech-fire
https://soundcloud.com/cathexis256/voltech-charge-attack-version
You can also see the mod in action here:
http://www.youtube.com/watch?v=O2OaqPjXX2U
To install this mod, download the sound files from the links below and place them into the folder where SK is installed.
http://www.mediafire.com/#lx3a5rkfi3arl
Should be something like C:\Progam Files\Three Rings Design\Spiral Knights\rsrc\sound\effect\weapon. I recommend you make a backup version of the old sounds in case you want to change it back to the original.
I think this violates the ToS a bit. Although I do hope that the staff don't mind as it's only sound changing...