I really would love to know the answer to this question. Any help will be greatly appreciated. 89vett
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I was an Altec dealer in the 70s and early 80s and owned (and loved a pair of Voice of the Theater speakers for many years -- I still have a pair of Altecs). I think you have either the 1236B cabinet which typically is 54x30wx24deep. You may also have the 1234B which is 45x28x27.5deep. Do you know which horn you have? Is it the 511 or 811B? I suspect the later, which means the cross over is at 800hz. Generally the woofer was the 416-8A. Email me if you have more questions about these since I still have some old Altec product brochures. There's also a good unofficial Altec website that may be helpful.