Here's a spiral bass horn I'm designing

carpenter · 6th June 2006, 01:09 AM

LightwaveDude · 6th June 2006, 02:03 AM

That should be pretty!

carpenter · 6th June 2006, 02:07 AM

I'll probably fabricate it from wire mesh and plaster--paint it with a pretty faux finish.

stelleg151 · 6th June 2006, 03:36 AM

very cool, please keep us updated on your progress

carpenter · 6th June 2006, 05:30 AM

I suppose I'd better take pictures...

Cal Weldon · 7th June 2006, 03:45 PM

Snail shell, I mean golden ratio yes?

carpenter · 7th June 2006, 05:27 PM

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

6th June 2006, 02:07 AM	#3
carpenter Paper mache horn fabricator diyAudio Member Join Date: Mar 2002 Location: Oregon City, Oregon	Thanks I'll probably fabricate it from wire mesh and plaster--paint it with a pretty faux finish.

6th June 2006, 05:30 AM	#5
carpenter Paper mache horn fabricator diyAudio Member Join Date: Mar 2002 Location: Oregon City, Oregon	I'll do that. I suppose I'd better take pictures...

7th June 2006, 03:45 PM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Snail shell, I mean golden ratio yes? __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

7th June 2006, 05:27 PM	#7
carpenter Paper mache horn fabricator diyAudio Member Join Date: Mar 2002 Location: Oregon City, Oregon	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

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6th June 2006, 02:03 AM	#2
LightwaveDude diyAudio Member Join Date: Nov 2005	That should be pretty!

6th June 2006, 03:36 AM	#4
stelleg151 diyAudio Member Join Date: Oct 2005	very cool, please keep us updated on your progress

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