I need the specs on the Altec 421A driver i.e. Fs, Qts & Vas. Can anyone help?
I need the specs on the Altec 421A driver i.e. Fs, Qts & Vas. Can anyone help?
Hi Jumpin
I've never seen those Ts specs posted anywhere for that specific vintage. You can get "some Altec Speaker Ts specs" over at Todd W.s' "Unofficial Altec Website" . You could use the 421-8H as a standin for most of the parameters needed in enclosure tuning.
There's a 421a Cut Sheet in this sites Altec Library section.
regards <. Earl K
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