Back in the late 60s I played bass through 4 Altec 421A (two cabinets). It all got ripped of in 72 and That was the end of my musical career.....I thought. Now I am gathering up stuff to play again. First out of nostalgia, and then I got the bug again. I always wanted a Sunn 200S so I built/rebuilt one of those to play The Jazz through. My greatest setup was the 421s and so I got one and then another. Having learned something over the last 40 years I started looking for parameters for the 421A and have been all over the net and finally wound up here. I find it really odd that these parameters are so darned hard to come by. I searched here (maybe not well enough) and couldn't find anything. All I have is the Altec Spec sheet which doesn't have a lot on it.

The only reason I want the specs is that I'm not exactly sure what I'm going to do with the 421s. If I have the specs I can put them in anything. HiFi, bass, whatever.

So anyone got those sneaky parameters?

Thanks