Had a jam session last night with a new guitarist. Wanted my '67 Princeton Reverb to SHINE, so I put in one of those THD 10" speakers that Andy Marshall was selling on ebay for cheap last month. It's only rated for 10 watts, but he said it should hold up in a Princeton Reverb. I don't think so. We were doing a cooking dual lead thing -- southern rock-ish -- and I twisted the volume from 4 to 7 to keep up with the other guy. A few seconds later *ZAP* -- my output went to almost nothing. A little smoke and stink. I cut off the amp about 10 seconds later. So, I think I fried the speaker -- never blown one before. I'm going to pull the speaker tomorrow and drop the chassis to see if anything else got toasted along the way. Any advice on what else might have happened, or what I should look for inside the chassis? Cheers!