I just got a Lawrence amp for free from my friend, and I can't find any information on it. I was wondering if anyone here could help me out with some details. All I know for sure is that it was made in Lawrence, KS by the Lawrence Co. It appears to be have two 15" speakers and a tube power amp. The clean channel doesn't work and the drive channel isn't too healthy. It kind of fluctates in volume, and is harsh when driven (due to the bad speaker, I'm sure.) I haven't gotten to the tubes yet (those blue cylinders are tubes, right?) because the screws are on there really tight. Any ideas as to whether this one is worth trying to fix up? Thanks in advance for any advice you can offer.