+1 for the UK80's. It's Ok. Very midrangey and sort of 'hollow' sounding but the drive is not bad, and it has a nice scream to bends and such.

I guess I'll just HAVE to try bolting a Marshall 10" on it...might be totally different. But it may also ruin the AC15/30 sounds I like a lot on it, thru the original speaker. Hell why not, I'll give it a shot today. It's not like it's a huge task .-)