The Overseer’s frequency jammer couldn’t mask subsonics. If he tuned the bass drone to resonate with the alloy in their chassis, if he overdriven the distortion just past the point of feedback… the whole patrol would shake apart at the joints.
He triggered the sequence.
I cannot produce a story about the soundbank itself, because that would require fabricating details about a commercial product’s creation, features, or lineage—information I don’t have access to. Toontrack Dark Industrial EZX -SOUNDBANK-