Something else that occurred to me is that you may want another bunch of CVs for volume control, to give a sense of random distances and enlarge the battlefield, as it were. There is also a module, named “DISTANCE”, which purports to be a “far-away-izer”, but I have not tried using it yet. The manual for it says “Designed to mimic through-air high frequency attenuation”, and one of the CV inputs is for “Distance”. Sounds promising.
Also, if you want to add some punch to an explosive sound, try mixing it with a single pulse from a VISH module, which is primarily a slew limiter. Starting from the “initialized” state, make the RISE time = 0 ms, the FALL time = 0.1 seconds, the FALL shape = 1, and the MIN GATE = 0. Use that pulse as the audio signal, not a control voltage. It’s the initial instantaneous vertical rise of the pulse that makes the snap or bang, and it must ramp down, hence the 100 ms drop-off. A square pulse (with the second vertical transition) will just sound like a double click.