Originally Posted by
RonSSS
I bought a pair of the original 411's some time ago. Like 7 years.
They were the originals from the Barcelona era.
Inverted cloth surrounds. One was ok, the other was dead cause the cone had sunk.
I measured the T/S parameters on the good one and they matched the Altec published specs. Exactly!
I sent both to GPA for a rebuild.
When they came back I measured again. First thing I had to do was re-bend the cone leads because they hit the frame at full excursion. GPA dicked this up. Sorry, fact.
Mine were the first recones GPA had done on these. Bill told me this.
These did NOT measure like orig 411's. They measured more like 416's.
I made 8 cubic foot ducted port cabs for them as subs and they worked perfect.
I still have them and they were a perfect match to the 904-8A.
Altec made several variations of the 411's that they never talked about.
Inverted cloth surrounds...(these aren't mystic, I had a pair), Extroverted cloth surrounds followed by Extroverted foam surrounds.
I have a pair of 9846 speaks that I can rebuild. I have all the parts. But it seems that I ought to just cut them up and burn them cause there is no consensus on the woofs.
But the consensus here is that 411's suck no matter what, and I don't think you know the varaitions.
Ron