I'm just learning about speakers and woofers and amps and all that stuff...im going to get my boyfriend a new system, and i dont know exactly what speakers to get. He has a 1200 watt amp and I need to know what speakers i should get that can handle that powered amp. He had two 12" volfenhag's and they blew after a week with that amp. So what brand, and what power speakers (i guess) would i need to get