Just bought myself a pair of vintage Altec 9846-8A styled monitors. They appear to be fitted with the correct gear e.g. 511B horn, 802-8D driver, 501-8A xover, 30904 attenuator/equaliser network and 411-8A (cloth surround) woofer. The only problem is one of the 411-8A woofers have been replaced with a brand unknown or identified, will have to search for another. The reason I have posted this thread is that the boxes were made by a local Altec Australian distributor (Zephr Product) in the 70's and as such whilst the outside dimension appear to be correct they, the distributor forgot to construct the stepped baffle for the woofer as per the original 9846-8A.
Is it possible for someone to send me the dimension for this stepped baffle so that I can at least restore them as close as possible to their original intent. Thanks