After watching these Altec's w/ quad - throats on them go for $7600:

http://cgi.ebay.com/ws/eBayISAPI.dll...ies%26_fvi%3D1

I was looking through some old paperwork and noticed some huge Western
Electric horns as part of a "Mirrophonic" system. As far as I know, Altec's largest were 18-cell (6 x 3), but these W.E. horns were 70-cell (10 x 7) . A guy named Aldo in southeren Italy sent me these photos years ago.

Are there other vintage multi-cells of that era that utilized many, many cells in their design ? Vitavox, RCA ???