In Reply to: Bass horn 100-600 hz posted by FlyCast on September 5, 2015 at 08:25:22:
On the floor, without knowing reactance and all that horn stuff, flat to 100hz, that'd make a big mouth. I call it 3pi because the horn is not terminating in the middle of a concrete wall, but it gets some loading compared to in mid air. I hope you put this on a concrete floor.Without hearing them, I'd look at the b&c 12pe32 (12") or the 8pe21 (8").
Both are used in the inlow horns, they both have too small mouth to me. He uses the 8" in a 135hz horn (theoretical 3db down) and the 12" in the 100hz midbass horn.http://www.inlowsound.com/
To me, ideally you can't make the mouth smaller than 6ft2 (2pi wants 4ft2 and 4pi want 8ft2), and it should be as deep as 1/2 octave below mouth cutoff, so a 100hz mouth should be 1/4 wavelength of 75hz long, or 3'9" deep.
Seeing the 6ft2 mouth is an option for me, but the 2' wide mouth would limit dispersion being almost 4' deep.
And there won't be much bass till you get 10' away also...........
Even Edgar admits his have too small of mouths, and you won't get much bass till you are 10' or more away.
Norman
Edits: 09/05/15
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Follow Ups
- flat to 100hz ? - Norman Bates 20:35:43 09/05/15 (6)
- RE: flat to 100hz ? - FlyCast 07:04:58 09/06/15 (5)
- RE: flat to 100hz ? - djk 19:38:55 09/06/15 (4)
- RE: flat to 100hz ? - FlyCast 06:07:19 09/07/15 (3)
- RE: flat to 100hz ? - djk 19:52:16 09/07/15 (2)
- RE: flat to 100hz ? - lokie 04:51:19 09/08/15 (1)
- RE: flat to 100hz ? - djk 23:53:15 09/08/15 (0)