photoshoot OB MK1, at least they sound good

[Helmuth]

It is a open-baffle with Kugelwellenhorn. Ad old and new year I had time to finish the Open-baffle loudspeaker and it took a lot of time to think about the best solution and build it.

KUGELWELLE

 

[a_tewinkel]

Looks impressive. Got more details on the horn, woofers and crossover?

 

[Helmuth]

Backside

See the chrome accent.

 

[Helmuth]

Details.

Volume control

 

[Helmuth]

Looks impressive. Got more details on the horn, woofers and crossover?

15 inch woofers, xo passive, http://www.diyaudio.com/forums/multi-way/189250-kugelwellen-horn.html

 

[Helmuth]

In my room i have corner placement then the system does 94dB 1Wmtr 30Hz-18000Hz.

It is capable to do 120dB 1mtr.

 

[Helmuth]

I like to design a speaker but to shape things is also a nice aspect of building speaker your self.

 

[Helmuth]

 

[Vix]

 

[Helmuth]

 

[janikol]

15 inch woofers, xo passive

this 4 х "Eminence ALPHA-15A"?

 

[Helmuth]

this 4 х "Eminence ALPHA-15A"?

You could those to. Simulate it in hornresp.

 

[janikol]

ALPHA-15A works up to 200Гц, all that is higher a dirty

 

[Helmuth]

Hi Janicol,

Here a simulation of the alpha 15A. With corner placement even 96dB 1wmtr 26Hz -3dB is possible. Simulation shows 1Phi placement .

 

[Helmuth]

This efficiency and sub-low in this compact design and low group delay, low phaseshift is unique. Only stupid people build a onken.

This design doesn't use the eminence alpha 15a

 

[janikol]

It not news... It is impossible to allow alpha 15A to reproduce a vocal

This design doesn't use the eminence alpha 15a

What it is dynamics?

 

[Helmuth]

It not news... It is impossible to allow alpha 15A to reproduce a vocal

It will be the challenge to get a source 300Hz -20kHz up with a high efficient full-range, even nicer a compression driver.

 

[rvrazvan]

Nice! Congrats.
After horns my next target will be some OB BASS!

 

[Helmuth]

It not news... It is impossible to allow alpha 15A to reproduce a vocal


What it is dynamics?

I can feel the punch. It is a efficiency effect IMO, dynamics is not direct to a horn related I am talking about low now.

 

[Draki]

Nice!
What is the co point? And how much did you attenuate the CD? Resistors or autoformer?