A disruptor bank was an area from which disruptors were mounted aboard various types of starships (see: disruptor cannon). The disruptor banks of a Klingon Bird-of-Prey could be modulated to emit tetryon particles.
In 2370, Jadzia Dax had the disruptor banks on Kang's Bird-of-Prey modified to emit tetryon particles, which were later used to bombard the Albino's compound. In doing so, they were able to effectively neutralize all directed energy weapons in the immediate area. (DS9: "Blood Oath")