It should be noted there are a few dimensional errors on this sketch that James is aware so he may update the drawing. In the meantime the upper rear dim of 65cm should read 75mm, the from upper slope directly above AER driver should read 30cm not 20cm as shown. The other couple of errors are the driver cut-outs are shown as radius dims whereas these are actual diameter cut-out sizes. I have a CAD file I'm prepared to share with anyone interested.
It should be noted that Nick's driver choice is: Supervox 285 GMF+ Lii Audio Fast-10s. I had to slightly alter the position of the Fast-10s driver on the front baffle since it is larger than the penned design AER Mk1. Our own Scottmoose has designed a conventional XO for the above drivers and also a series XO to mimic the conventional parallel one. Should make for interesting comparisons.
Anyone contemplating building a non-Perspex pair these OB's will need to have access to a table saw with angle cut capability, or source someone with a 5-position CNC router. If a straight cutting (i.e. 90-deg cutting head) CNC router is available it would certainly make life easier having the side panels machined. One can quite easily see that the design shape lends it perfectly for Acrylic.
Here is a photo of the final set of cut panels for a single speaker:
I took the second photo of the driver front baffle to prove the holes are actual circular and not elliptical as seen in the first photo!
And in good old Blue Peter fashion, here is one I completed earlier:
So onwards now to complete the second mule. More to follow.
