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Old 28th June 2009, 12:03 PM   #1
dhenryp is offline dhenryp  United States
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Default Little Big Horn

So I show my wife my Bugelhorns and she says they are nice and small (compared to some of my other speakers) but they are still a little too big to allow into the civilized living space.

Little Big Horn is my attempt to squeeze into a 25% smaller volume, roughly equivalent to a Frugelhorn. The mouth vents to sides at the floor. This avoids one major bend where the cross section is nearly at its widest and makes the folding easier and more space efficient.

The other significant feature is that the box is tilted back 4 degrees. This will bring the sound stage up to ear level at a reasonable listening distance even though it is only 30" tall.

It is designed for the FE126E but I used measured Theil Small Parameters instead of Fostex published values. The FE126E you receive is quite different from the published specs. Fs in particular is significantly higher.

Here is the drawing.
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Old 28th June 2009, 12:05 PM   #2
dhenryp is offline dhenryp  United States
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Here is one horn nearly complete.
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Old 28th June 2009, 12:17 PM   #3
dhenryp is offline dhenryp  United States
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Here is the Hornresp simulation.
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Old 28th June 2009, 02:18 PM   #4
dhenryp is offline dhenryp  United States
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Here is a shot that shows the bottom deflector better.
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Old 28th June 2009, 02:38 PM   #5
dhenryp is offline dhenryp  United States
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The completed side.
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Old 28th June 2009, 03:22 PM   #6
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Absolutely stunning. I love the swept-back profile and the platform / mouth. I think you definitely win the award of world's fastest BLH designer and builder (!)

Just a newbie question but on the folding scheme, does the expansion actually narrow a tad near the area (on the diagram) where "35" appears twice?

Really sharp work!
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Old 28th June 2009, 04:01 PM   #7
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Many design considerations are thought of here.

The narrow cab looks to have good stability incorporated in the design.

Congratulations and good listening to you.
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Old 28th June 2009, 06:19 PM   #8
dhenryp is offline dhenryp  United States
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rjbond3rd - You're right. It does skinny down a little bit there. It's one of the compromises I made to fit it in the box. Based on some measurements I've made at the mouth, it doesn't seem to have hurt.

Speaking of which, I've attached some measurements I've made at the mouth and also right in front of the driver. It looks pretty much like hornresp said it would (next post).
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Old 28th June 2009, 06:21 PM   #9
dhenryp is offline dhenryp  United States
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Mouth and driver per Hornresp.
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Old 28th June 2009, 07:27 PM   #10
dhenryp is offline dhenryp  United States
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So how do they sound? I've listened a while now in one channel stereo (I only have the one built). They sound very similar to my bugelhorn with the FE126E driver, which is what I was shooting for; the same sound in a smaller package.

rjbond3rd and loninappleton - Thanks for the complements. I'm happy with the way the look turned out. I think it has a little Art Deco feel with the swept back look and arch over the deflector. Now all I have to do is finish the second one and then veneer them both.
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