4315 Production

[Triumph Don]

Can't find it on this site. What were the production years/dates of the various 4315 models? Just picked up a pair with the dual ports at the bottom of the cabs. How rare?

[Odd]

Manufactured to ....

4315 to 1981
4315A to 1983
4315B to 1983

Link (http://www.jblproservice.com/pdf/Systems Reference Charts/Studio Monitor Series.pdf)

[Triumph Don]

Thanks, I saw that list. What I would really like would be the first year [possibly 1977?] and the number of units made per year or the total production of all the 4315 models.

[BMWCCA]

It would be nice to have that in table form for many systems, but I don't remember ever seeing it.