If your determined to replace it, it will do fine but before you do you might want to remove the old speaker and get a test CD that has a sine wave sweep from 20 HZ to 1KHZ. Hook it up to a stereo amp that you know has a clean output and play the sweep. Watch the spider and surround while it sweeps. If you only hear a pure tone then it's not the speaker, it's either a physical cabinet rattle or the guitar amp was way over-driven in to clipping. If you hear any buzzing, rather than a round tone, the voice coil is probably toast.