Hi Peter, I have just joined your forum as after building many speakers most recently the Tannoy Autograph I am looking at the oracle cabinet, obviously there are no plans on the internet, I know Guy (Puresound) so have e-mailed him and thought I would try yourself as well after seeing your system pictures on the Vitavox site. I intend using something along the lines of the 330 horn on the top with s2 drivers but it's all dependent on building these cabinets. I am good pals with David Wright who will help on cross over duties. In great hope you maybe able to assist, if you can help I would happily build a pair from Birch ply for you as a thank you as I imagine the ply will be around ?200 for a pair if you paid for materials. I am in Brighton UK. 01273 696429. These would be for my own personal use and would not be posting build threads on Forums etc. Very best Simon.