Originally Posted by MKtheater
Thanks guys, will the la scala work then or will Maxmercy's be better? I would need the plans for this as I am not the greatest builder.
I got the directivity answers I needed.....basically, you will need EQ to tame a rising response due to the size of the horn mouth (something that if I compensated for, I lost low freq sensitivity and extension), but check out this directivity. Simulated response on axis, and in 5 deg increments out to 30 degrees, for a 60 deg total dispersion, 2Pi space, 20V in, excursion at 80Hz is 2.5mm:
I cannot simulate directivity for more complex horns....hornresp doesn't allow it, and I am no Akabak master. But with some EQ tweaks (or something like Audyssey to do it for you, or even part of a crossover network, like a shelf filter), you can have some damned dynamic and accurate midbass sound.
With how well my Insubnia project measures compared to hornresp, I think this will work out well for you.
The BITCH will be the folding of this thing. As it needs to reach 400Hz, you'll need some smooth 'folds', no 90/180 deg folds with 45 deg reflectors....but LaScala uses crude folds and reflectors, so it may work...
I will need some time to generate a fold....it will have to be '3D', probably, with a vertically expanding segment to the split (the center cusp of the 'W') followed by a segment that expands horizontally...