Here's a spiral bass horn I'm designing

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:)
 

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no...

There was no intentional thought given to a golden ratio. The horn doubles its area every 36" or so. It's a curved horn, so the X axis doesn't apply for length. I moved the axis outwards to the 5/8-3/4 point and measured from there.

This is a 20hz horn meant to be loaded in a corner. Being truncated, it will require EQ, but seems like a doable experiment. Beings that there are no hard reflective angles, the output may register a higher frequency before tapering off.

I base this notion on the fact that I can get fairly high frequency response from my goose-neck bass horn.

John:)
 
I've improved upon the design, made it MUCH larger! ;)

Here's some snapshots of the fabrication process:
 

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Very nice, and very cool. I can see how that too so long to make. What is the length that you ended up with for the horn? Also, how do you install or swap out the driver? :D

I don't remember the exact length, but it's around 15 feet.

There's an access panel on the side of the horn (it's hidden by the white paper mache horn) that allows me access to the driver.

Thanks for the positive strokes! :)
 
John, I already said you are crazy! This is crazy!

All bow to the master craftsman!

Hahahaaaaaaaaaaaa...... crazy man....... that's me!

Someday, when you and greased lightning are passing through, stop by and have a listen. I'm getting into DSD (not to be confused with LSD ;) ) and the format sounds excellent on my system (1 bit/2.8Mhz!). I'm using the TEAC PD-501HR player and it's light years ahead of the HK unit I had previously been using. It even plays CDs better than the HK!
 
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