3D printed Beolab-like waveguide for compression drivers

[pelanj]

I noticed that Patrick Bateman had a high opinion on the Beolab waveguide. It looks easy enough to draw in 3D and print. I would like to try it with a compression driver. What would be some good dimensions to start with? What will be the usable frequency range? For directivity, I would like to start with 90 degrees. I wonder how the mini-klam would compare to that.

 

[pelanj]

If anyone interested, here is a link to the 3D construction: Cloning a $3200 Speaker for $400

By the marvelous Patrick Bateman. Thanks go to him.

 

[hardbats]

i've drawn and printed one using those photo's and dimension. will post a pic this evening

 

[hardbats]

An externally hosted image should be here but it was not working when we last tested it.

 

[bwaslo]

image doesn't show

 

[hardbats]

 

[pelanj]

That looks nice. What are the dimensions?

 

[hardbats]

I used the ratios of the drawing in the topic you quoted.
The tweeter is a 1" softdome and the mid is a 3"

 

[freddi]

love to have a pair for 1" CD. Regarding the 3" size, might this cheap Lavoce 3 work w/o contouring ?

(hey Pelanj not on forums for some time as was in the hospital a month from angioedema of the tongue plus picked up infections there in blood, urine, lungs - still real weak/rough/congested - have PEG tube and trach for unknown time plus tongue still has some swelling.)

 

[pelanj]

It looks like a nice project - do you have a thread for that?

Hey Freddi, glad you are back and I hope you will get better soon. I got my own 3D printer, so when the time permits, I will try this out, too. And when the weather will be warmer, I will try to do some proper outdoor measurements of the waveguides I have.

 

[freddi]

Hey Pelanj - here's what I got with a Dynavox copy of the old CTS "phenolic ring" paper cone tweeter using a mini wedge shaped K-chamber

 

[carlthess40]

Nice work
I just bought a large 3d printer and I need to find free 3d files for mid and tweeter horns
And anything else related to audio
Any ideas ?

 

[pelanj]

I have posted some K-tube and miniKlam STLs in the forum if you would like to try them. I would also recommend the Unitized Image Control Waveguide project by Patrick Bateman, I built a pair and I like the result.