Buy the 6.5 inch roadmaster tube from walmart. It says it can handle 300 watts peak, and I was giving it 400 RMS all day long and it surprisingly lasted for a week! When it finally died on a bass test song it just got louder and louder and stopped. Great smell and haze coming out of the port. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif I'm going to get a few more at only $19.95 each, good deal!