Idaan said:
A set of cathedral organs as wide as the central nave of the ship (so about 300 meters) to be played by the Captain during space battles. Bach's Toccata and Fugue in D minor is bound to scare away any possible boarders or just strike them down with sheer awesomeness.
Provided that they have means to send the music through vox transmissions, or the boarders are already on board the vessel in question. Soundwaves don't travel through the void after all.
Which is partly why Joss Whedon's Firefly is such an awesome sci-fi series, since you don't hear any sound at all when you see footage from "outside" the space faring vessels, regardless of how much they are shooting at eachother or gunning their engines.
But hey, I guess that if you're gonna invest in a big cathedral organ, you'll also hook it up to some serious vox transmitters, blasting the sound out over several different channels, so that no matter if enemy vessels try to switch frequencies they will still hear the infernal playing of the organ.
