i've completely burnt the coil of my Mesa Powerhouse 1x15. The man who fixed it told me "less power please!" But I use it together with a 2x10 (both 8ohm) with a Mesa 400+ or a Mesa MPulse 600, never more than 3.5 of volume. What's the problem? Some friends say to me " too much overdrive, too much fuzz" yes I often use distorted sounds but is it really possible to burn the coil with too much distortion? I use Fulltone bassdrive, ZVez Wolly Mammuth, EBS microbass, sometimes od and fuzz together (!) but I don't do it anymore!