Here is the situation: I have a Yorkville 200B 1x15 combo and I just added an older Yorkville Bloc 1x15 extension cab. Both are fairly old pieces of equipment but in very good condition. As far as I know, the combo sounds great. Very loud. Never distorts...such that I thought my Sansamp BDDI was broken. I could NEVER get distortion out of my combo. I just bought the extension cabinet a few weeks ago. The seller said it was reconed about 5 years ago. It sounds much louder and brighter but the thing is that I can hear my BDDI distortion now. My question is this: Should I be concerned about the state of my combo speaker? It sounded fine before, sounds fine now, but it doesn't perform like the older/reconed extension.