This looks like a nice design, I'm tempted to give it a go with the JBL 10" driver as this is available to me in the UK.
I was wondering if it's possible to use it with a 12" driver if I make the box a little wider?
I have a few Pioneer TS-W305C drivers that I would quite like to use here:
Now I tried to model it in hornresp, but I wanted to check that I had all numbers correctly before starting to cut the ply. I've aimed for a 13" internal width, so in order to model this I've divided all the SD values by 11.75 and then multiplied by 13. I've also done this to the VTC and ATC values.
Here's my input screen:
There is an error, "Atc < SD", is this of great concern?
And the SPL curve:
Pioneer drive in black, Tang Band driver in grey.
Now it seems to model pretty well, is there anything I have got wrong here at all as I'm still getting to grips with hornresp.
Also I'm planning to use 1/2" inch ply and also extra bracing as this box will be wider.
I'm not sure how I can attach text files so I'll copy/paste my hornresp export file:
Ang=2.0 x Pi
Comment=Cinema T-6 Pioneer TS-W305C (13"Internal)