A friend of mine was using a beat up guitar combo as his bass practice amp. He is a guitar player and had no real use for the amp so I offered to take it off his hands and fix it up. I had a feeling it just needed a new speaker but it has turned out to be a little bit more of a project then I had anticipated. Here is a picture of the front of the amp after I had removed it from the combo. The top right corner says CG50B. I am going to take a bet that the 50 = wattages. This is a top shot of the amp wires. The flash makes it hard to read the board: "HANA Eletronics Co." CG-50B (Pre) 12.04.98" After I took the amp out I looked at the box and realized that it had a single hole for a 12" woofer and two holes for 3" horns... but the thing had no 3" drivers inside. I took the 12" woofer out and it looked really good. I was starting to think that the driver wasn't broken (in which case I was clueless as to what the problem was). I plugged everything in and for some reason it didn't work... Then I noticed that there was a fuse hole on the back of the amp. It looked like it had once had a cover- now the cover had gone missing and the fuse could slide out of it's home with ease. I got some cloth gaffers tape and taped up the fuse. Then the amp turned on and I could hear the hum through the speaker. I cut the high and had my assistant (13 year old brother) wack on my bass while I fiddled withe the volume knobs. The driver sounded pretty good, and I was starting to think that the distortion I had heard was due to the fuse not being secure, but when I got the volume up to about 3 the speaker started to distort. I stopped the playing and looked at the woofer closer. It was almost impossible to see but one side of the the face was warped a small amount. here is a pic (the woofer looks like it is in good shape but I have circled the warp.) So currently I have a few problems with my project: 1) I need a new 12" woofer- a problem because the woofer in there has no markings and I have no clue about what Omh to buy for the replacement. 2) I need to see if I can find a new fuse cover. This isn't that big of a deal because I can just use tape if I can't find one. 3)I need to figure out where the crossover is on the amp board- and I need to replace it with one that will use the 12" woofer down to a lower hertz and then cut to the two 3" I'll install for the high range. 4) I need to buy new 3" horns and re-wire from the new crossovers to the 12" and the 3". I'll let you guys know how it turns out.