folded horn subwoofer for single 10" driver - Page 3 - diyAudio
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Old 4th April 2010, 07:38 PM   #21
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Just a heads up. It appears that Virtual Box for OSx is only for intel machines. Looks like it is worth a try for the Ubuntu machine though. Will have to see what OS version I have and give it a whirl (when I have the time )
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Old 5th April 2010, 03:45 PM   #22
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Heres the complete photos, I'm curious if I built a base for it with a swooping mouth extension, similar to the frugalhorns if that might just give me a little more in the low low end.

Any suggestions?

http://sphotos.ak.fbcdn.net/hphotos-..._6482111_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-...5_550672_n.jpg
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Old 5th April 2010, 06:12 PM   #23
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Quote:
Originally Posted by djdaveysprocket View Post
Heres the complete photos, I'm curious if I built a base for it with a swooping mouth extension, similar to the frugalhorns if that might just give me a little more in the low low end.

Any suggestions?

http://sphotos.ak.fbcdn.net/hphotos-..._6482111_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-...5_550672_n.jpg
Looks great.

Adding a little "flare" to the mouth will likely have no effect at the frequencies you're most interested in. The only way to make a horn play lower is to make it longer, but your driver had better be up to the task as well.

1/4 of the wavelength at 40 Hz = 7 feet
1/4 of the wavelength at 20 Hz = 14 feet

As you can see, adding an octave to the low frequency response doubles the horn length required.
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