I just got a Sunn 300T and was very excited to try it out last night. I have a 4 ohm capable Ampeg cab. I got all my settings the way I like them, plugged into my bass and just started playing on it trying to dial in a particular sound when I suddenly see a blue burst form around the tubes. I continue playing because I didn't notice the sound change until the amp started crapping out on me. Thats when the two red warning lights indicating a fuse problem (I believe?) came on directly behind the tubes. A moment later I realized what had most likely caused the problem. I didn't set the ohm switch to the right ohms before I started playing. It was set to 2 ohms. I have a 4 ohm Ampeg 8 by 10 cabinet. Shortly after the two red warning lights came on the amp just completely shorted out and isn't even getting power at all. Anyone know what I may have done?