Hi, I've been rearranging my house and the only place that my bass speaker cabinets will fit is right by my computer desk. I have 2 cabs stacked (a 4x10" speaker cab and a 1x15" cab). They top cabinet (4x10) is horizontally level with my mac and there is only about 18" between them. Will this cause system damage? Each cab is rated for 400 watts rms(not that I put that much into them) so they are designed to handle a lot of power=big magnets.