I was very fortunate to find an Ampeg B25B cab that left the factory within months of my 73' V4B (a mile from my house much less). I was excited as it has original Altec 421A's in it. I've had it for a while now, and unfortunately, I've come to the conclusion that it just doesn't sound very good (p-bass with flats). It doesn't have a ton of low end, which is fine, because neither does my B-15, and no one ever complained about that. The mids I would describe as "stuffy", and the highs I would call "non-existent". The speakers aren't blown, but I'm wondering---have 45 years of humidity and who knows what else taken their toll on the cones? Or is that just what the Altecs sound like? I will probably replace them with Beta 15s, as that is the usual replacement for the cab, and I happen to really, really like the sound of the Beta 15, so I'm guessing I'll be happy with it. However, am I missing something with the Altecs? I could get them re-coned, which might improve them (or it might now), and it would certainly be expensive.