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Golden ratio bass horn
Golden ratio bass horn
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Old 24th December 2017, 05:49 AM   #1
Walloffound is offline Walloffound  United States
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Default Golden ratio bass horn

I just aquired a pair of speakers. They are custom made by a skilled cabinet maker, based on the design of the original owner, the man who gave them to me, a former math teacher. He told me it is a bass horn designed in proportion based on the golden ratio. They have fostex full range drivers. The sound is wonderful and rivals the best speakers I've heard. I can get exact measurements later, the wood is 12 layer plywood. They are about 5 feet tall. Im wondering what you all think of this design, there are no folds inside just one flat piece of plywood going from the center to the bottom of the front baffle. Im not sure what exact driver is used. Thank you for your comments.
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Old 24th December 2017, 06:11 AM   #2
hm is offline hm  Europe
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Default replikon

looks like a Replikon from hornlautsprecher.de
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Old 24th December 2017, 09:22 AM   #3
Scottmoose is offline Scottmoose  United Kingdom
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From the pictures the driver looks like it could be a Fostex FE20xE or FE20xEn series unit, but I could be mistaken as the images aren't close enough to tell properly.

Hard to say about the design without any actual dimensions, other than at least it's large (a good thing for horns), so it's acoustically efficient over its design passband. If there's no acoustic low-pass it probably has a higher upper corner frequency than I'd personally prefer, but YMMV as always, and we all have different priorities so that's observation only. It looks interesting & I hope you can post more details when time permits.
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Last edited by Scottmoose; 24th December 2017 at 09:24 AM.
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Old 24th December 2017, 09:44 AM   #4
freddi is offline freddi  United States
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Golden ratio bass horn
prettiest mailbox in the world - hope you can draw its insides
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Old 24th December 2017, 09:00 PM   #5
Walloffound is offline Walloffound  United States
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Here are the dimensions
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Old 24th December 2017, 09:11 PM   #6
Walloffound is offline Walloffound  United States
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Had to post one with the grill. The guy has a great design sense. These are beautiful to look at
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Old 24th December 2017, 10:40 PM   #7
Soldermizer is offline Soldermizer  United States
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For the rest of us, there is second hand PA horns and cheap Chinese electronics Good score!
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Old 24th December 2017, 11:18 PM   #8
planet10 is online now planet10  Canada
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Golden ratio bass horn
Quote:
Originally Posted by Walloffound View Post
Here are the dimensions
Redraw. Note: earlier draw updated to reflect the photo of the side and the clue suggested by XRK.

dave
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Old 25th December 2017, 12:23 AM   #9
Walloffound is offline Walloffound  United States
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the front baffle is 18" and the internal dividing panel is 22" -my drawing is off but the measurements are correct. You can look at the photo to get a more accurate curve of the top. There is a flat part of the horn on the back as you rendered it, that is correct. The bottom of the horn does not have a flat part, as you can see in the photos, the bottom of the horn curves all the way to the front bottom
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Old 25th December 2017, 12:27 AM   #10
Walloffound is offline Walloffound  United States
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im not very knowlagable about horns and I know there are many people here who are so I just wanted to get the community's feedback on the design. i can draw a more accurate description if you want
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