[ARSCLIST] PreRecorded Tape Duplicators

[carlstephen koto <cskoto@xxxxxxxxxxx>]

I've been collecting prerecorded reel to reel tapes (classical and  
jazz) for a while now and while myself and a few of my fellow  
enthusiasts have found a good deal of information regarding the  
titles that were sold, we don't know very much about the duplicating  
facilities that made them. There are scattered accounts of the Ampex  
factory such as the one on Mr. Hess's site which I found very  
interesting. But I've never seen any documentation of RCA, Capital,  
Columbia (and the other monikers their tapes were sold under),  
Stereotape (which I believe began as Bell and Howell and was latter  
to become Magtec) not to mention all the smaller operations.
The information I'm seeking is more of the nuts and bolts such as   
years of operation, tape production, any details regarding their  
duplication lines (duping speeds, tape stock used) and what labels  
they produced these tapes for.
I do need to pose the question to the gentlemen on the Ampex list for  
more details on their operation but I'm concentrating on the early 2  
track releases first since finding first hand accounts regarding  
these will become less and less likely as time marches on.
Thanks in advance for any information regarding these tapes even if  
it's only a lead.
Steve Koto