I'm working on a large horn-loaded subwoofer project which needs to fit in a particular space, and after playing around forever with different drivers and designs in HornResp I've come down to a couple favorites. Both are the same driver (B&C 12PLB76).
This will be mostly for HT, but some music too. The room is 16 feet square, and even though it isn't "sealed" I'm anticipating a bit of a room resonance around 35 Hz (half wavelength~16 ft).
Plan A is pretty simple, with only two 90 degree turns, and the response (left, below) is pretty flat, rolling off below 40. I might use an equalizer to boost @20 Hz, and might get _a bit_ of room gain (although I'm not counting on it) to improve the very-low end response.
Plan B adds another corner (this one bends ~ 150 degrees) for more length, and gets better low end extension, but adds some ripples in both the response and impedance. (The dip at 35 Hz is actually intentional, to try to diminish the expected room resonance @ 35Hz I mentioned above.)
I've been going back and forth- I'd like to go for that last octave, but not if it means distortion or funky resonances, perhaps even beyond what HornResp shows, since it models these horns as straight shots, which this is not.
I can (and will) give you more details on this project later, but for now, which general direction would you take?
This will be mostly for HT, but some music too. The room is 16 feet square, and even though it isn't "sealed" I'm anticipating a bit of a room resonance around 35 Hz (half wavelength~16 ft).
Plan A is pretty simple, with only two 90 degree turns, and the response (left, below) is pretty flat, rolling off below 40. I might use an equalizer to boost @20 Hz, and might get _a bit_ of room gain (although I'm not counting on it) to improve the very-low end response.
Plan B adds another corner (this one bends ~ 150 degrees) for more length, and gets better low end extension, but adds some ripples in both the response and impedance. (The dip at 35 Hz is actually intentional, to try to diminish the expected room resonance @ 35Hz I mentioned above.)
I've been going back and forth- I'd like to go for that last octave, but not if it means distortion or funky resonances, perhaps even beyond what HornResp shows, since it models these horns as straight shots, which this is not.
I can (and will) give you more details on this project later, but for now, which general direction would you take?