In article ,
Patrick Covert wrote:

JBL, Altec and EV, at the very least used to have available plans for a
wide variety of cabinets, designed around their drivers. Does anyone
know where these can be found, preferably online? In particular, either
EV or JBL had one for a 1x12" cabinet barely bigger than the driver, and
containing around a cubic foot of air. It was intened for guitar
applications.


Try http://www.jblpro.com/pages/tech_lib.htm


or a search for EV resulted in:
.. Details on vented box design, construction and equalization may be
obtained from Electro- Voice by requesting ³TL806 Builders Plans (Form
1544-523).

I don't know if that is current, but it's worth a shot.

I have a pair of cabinets like this built by Joe's Speaker and Salami in
NJ from the 80s.

Edwin