Seven PI Corner horn and Altec 515's

Hi all,
this is the first time I write in this forum.
Well, I fell in love with the seven PI cornerhorn design; they are simply beautiful.
Given that I'm going to receive soon a pair of Altec 515E's, I was wondering whether these enclosures could make a good match with them.
And, if so, will they match an Altec 311-60 midrange horn with Altec 288-16K's?

These are my doubts. And still I have not decided what enclosure I'm going to build.
And, just for the records, this is the first time for me with a Horn system.... (well I've built a Lowther folded horn once)

Thank you all in advance.
Best regards,
Enrico.

P.S. In case the seven PI (15") should be a suitable design, is there any place on the web I could get the plans?



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