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Old 18th December 2012, 06:06 PM   #81
Pano is offline Pano  United States
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Default Impedance plots

OK, here are 3 plots of impedance. I hope it's legible.
  • Magenta trace = no stuffing in rear chamber
  • Blue Trace = as much pillow stuffing as will fit
  • Green Trace= 1 car polishing rag about 8"x11". A tight fit in the camber.
All were with the beginnings of the spirals medium stuffed with pillow fiber.
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Old 18th December 2012, 06:36 PM   #82
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Originally Posted by zayne742 View Post
However, here is a website where someone used the Cornu as wall art!!
[/url]
Yes, I am considering how to do the final 'dressing up' of these and silk screening or even an incorporation of the driver into the artwork is in order.

Glad to hear we have another on board.

There's one born every minute.
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Old 18th December 2012, 06:36 PM   #83
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FF125wk I think and that is about 5 inches. Is the W5-1611s a bigger cutout?
FF125 is a 4.5" driver, 1611, a 5.25" driver. FF105 is a 4" driver.

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Old 18th December 2012, 06:37 PM   #84
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Interesting plots Michael.
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Old 18th December 2012, 06:46 PM   #85
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I'm always plotting something.
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Old 18th December 2012, 07:03 PM   #86
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Old 18th December 2012, 07:17 PM   #87
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Yea, i'm using the FR125s's. It's what I have to work with, and I hate my 7L towers I had them in. (heavy, very narrow sweet spot, inefficient, can't place against wall, basically they never get used due to ergonomics) I was toying with making them a desktop nearfield, but couldn't get a small enough box modeled to make them fit on my desk without copious amounts of weird shaped cutting to reach an appropriate volume.

Thinking of ways to mitigate some of the bass response, (stuffing, volume) an easier problem to solve then having a too-thin sounding speaker at least (audio engineer in me says you can always subtract, but adding always comes with a catch). That's what makes me curious about the dimensional modeling.

At the end this will be a background music speaker, so there are levels of compromise I can live with on this one. Cheap, WAF, and gettting them used rather than collecting dust are the motivations on this one for me.
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Old 18th December 2012, 07:24 PM   #88
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Originally Posted by zayne742 View Post
You guys are ruining my holidays!!! All I can think about is building a pair of these. Have been wanting to build a pair for years, and like Cal said, could never truly figure out how to do it without major work. Since I have to move in a month, my projects are all on hold.

Has anyone nailed down depths? I have a pair of 2" Tymphany drivers need a cabinet. Thinking the 14" version should work well, plus beats making a sound bar for the TV. Should be a fun project for the kiddo as well.

However, here is a website where someone used the Cornu as wall art!!

cornu spiralhorns, wall mounted speakers, high sensitivity ,
That's not a bad frequency plot, on that page.
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Old 18th December 2012, 07:58 PM   #89
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Yes, I am considering how to do the final 'dressing up' of these and silk screening or even an incorporation of the driver into the artwork is in order.

Glad to hear we have another on board.

There's one born every minute.
I think it is a great idea. Another, especially with the transparent-ish set, would be to add LEDs as accent lights. It's a wall sconce, its art, its a speaker!!!

The only reason I would not be on board is this is killing my justification for a CNC wood router. I figured that would be the only way to make this horn. Was thinking router top and bottom, and use masonite. This is better!
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Old 18th December 2012, 09:02 PM   #90
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Originally Posted by zayne742 View Post
... here is a website where someone used the Cornu as wall art!!

cornu spiralhorns, wall mounted speakers, high sensitivity ,
I made this point in the other thread - get away from the idea that a speaker must look like one. If it's thin, square and hangs on the wall, its WAF will be much higher if it looks like art. Covering it with fabric, stretched around and stapled at the back, is also much easier than sanding and painting / varnishing / staining. It will certainly be more acceptable than the floor-standing BLHs shown just above the "Measurements" section on that page.
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