Question Altec 861 enclosure

Hi,

Which Altec driver is recommended for the 861 enclosure, (1968 Enclosure Design Guide ) Thanks,


http://img402.imageshack.us/img402/5209/page12pi.jpg

A 420 (A/Y) Biflex with a small throwaway tweeter in your 861 (A/B) box became the 870 (A/B) system;


http://www.lansingheritage.org/image...ers/page06.jpg

Thanks, the Madrid and first santana ah and the 870B, again thanks, biflex 420