My friend has a Pioneer TS-WX80BP 8in sub/bandpass box that he said he'd sell to me for $30. (Specs) He doesn't use it and the plastic part of the box is chipped which is why it's so cheap. I'm thinking about picking a ~400 watt max/~200 watt RMS amplifier in case I want to upgrade the speaker. Would that much power blow the 8in? And it's best to go with a 2-channel bridgeable amp, no?