In Reply to: Pi seven port size using Altec 421A 15" Drivers posted by jumpin on November 09, 2003 at 12:45:11:
Hi; What hf driver will you be using if I may ask, Only because I use the 421 in an 4.2cu.ft. enclosure base reflex tiangular shape with an 811/806 on top and the stock 800 hz. xo and would be interested in your chioce of hf.
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