It also would not be possible to shoot on a curved screen without an A lens, and have perfect/uniform focus across the screen - to what degree, and how objectionable it would be, you'd have to test of course. If it was me, I definitely would never do a curved screen without a lens.
They're from parts-express:
Oh, and after dealing with the one long floppy panel at the bottom, with a joint in the framing, I instead did two panels above the screen, can't tell that it's two pieces unless your nose is right up close to it.
And you're welcome!
My vote: reading the manuals and learning how to set up your equipment properly. Its free, and makes a huge difference (speaker placement, auto calibration, crossover setting, etc.). Amazing how many people keep throwing money at the problem without bothering to learn how to use what they already have.