Getting a new 2.1 system with a huge subwoofer cabinet, 22" long with 8" woofer. I have seen recommendations that it be at least 2 feet away from hard drive but I see articles by those that seem knowlegable on physics etc that say there is no way a speaker magnet could damage a drive because it would not impart magnetic field sufficient to overcome what holds data on drive unless it was a industrial magnet, degausser etc. How far do you think is safe? I am planning on 1 foot away.