Can anyone help?

Type in Cornwall Plans in the "Search". There are a lot of posts. To find the plans, start at about page 12 and scroll. You should the plans somewhere.

phil o, you can find the plans under cornwall plan in search mode. if you need pics of insides, look in odds and mods. i posted mine there on sat. dave

Dave my biggest question is about the construction of the cabinet, it seems like the cabinet id started out as a plywood vented enclosure, then a second layer of appearance grade wood (oak, etc.) is applied over that. Is this so?

No. Start off with sheets of lumber core "plywood", 3/4" thick, in whatever veneer you choose (oak, walnut, zebrawood, teak, etc.). This is the material that was used in the factory for all Cornwalls (not the II's), except for the raw birch models, which were a 9-ply veneer-core. You can't get lumber core at most "home improvement" stores (like HD, Lowes), you must go to a lumber yard that caters to cabinetmakers. Duplicating the raw birch models would be much easier, as only square butt joints are involved. With the other veneers, you'd be mitering the box (at least the sides to the top). Kinda depends on your skill level, I guess.

fini

Having recently been inside my Birch CWs I realize that the only critical parameters are the port cross sectional area and length (length of shelf) and the overall inside net volume. Other than that and accomodating the components, you could customize. Theoretically one could build something very similar to the Cornwall with other woofers, horns, and tweeters, as long as you take the woofer T/S parameters into consideration when determining the net inside volume and port dimensions. This is essentially what I did with my now finished custom Altec cabinets with the help of mdeneen and a software progam he used for making these determinations. I bellieve those software programs offer several possibilities, so you study the graphs and determine what resonant frequency and roll-off has the best characteristics .

What is the resonant frequency of the the Cornwall cabinet which is essentially a bass reflex design? This has probably been mentioned many times, but I forgot.

I am anxious to get my newly damped CWs hooked up to see what differences I notice. Mostly I damped the woofers after the example of Dean who posted pics of his mod. The idea made so much sense.

C&S

It would seem pointless to build a Cornwall Clone from scratch. Why? If you want speakers of that SIZE, you could build a far superior speaker using far better components. If you DO build a Crnwall "clone" it will have no value in resale. It's a tonload of work to build a big speaker and do it nicely, you sure would't want to do all that and end up with "just" a Cornwall, would you? It's a bit like creatinga Dynaco MkIII clone - -why?
mdeneen

Ouch!!!
That hurt!

In pain...but Slammin

tc

Clonewall. Has a certain ring to it (until damped).

fini

 Thanks, I did...the plans are just sort of a guideline.  I have to figure out what to do with two pair of HII guts.