are you talking 6-800W RMS from the amp? what size amp are you using? 99% of all speaker driver failure is from LACK of power and the amp maxing out and "clipping" this sends a bad signal to the speaker and overheats the voice coil. the only time i have seen speakers breaking from too much power is during extreme SPL competeions where there is SO much power that the speakers litterally rip themselves apart. if your subs smell burnt then your amp has clipped and fried the voice coils. check and make sure you have big enough wiring to the amp and that you aren't taking max amp wattage and translating that to speaker RMS. amp max power should be equal to at least twice the speaker rms or greater to get the best reliability out of your equipment

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!