How much work would it be to modify the existing oval design (for example the 5" version A) to a circular waveguide with an external diameter of 148 mm?
probably easy, but it will measure differently. I can work on it tonight and post something.
Any progress?
I might just have a go at it
I took that as you were going to design one! Sorry. I'll work on it tomorrow.
I might just have a go at it
I took that as you were going to design one! Sorry. I'll work on it tomorrow.
Ah, sorry, I was confusing you. I have absolutely zero knowledge about working with 3D files. I was trying to say that I'll just send the file for the round waveguide to a CNC service and see how it measures with the Scan tweeters.
It would be great if the outer diameter would be identical to the WG148 (148 mm) so the baffle cut-out could be the same for both wave guides.
Hi Augerpro,
Will you opload step file (in centimeters) of the 8" WG for the SB26ADC SB Acoustics tweeter ? 🙂
Will you opload step file (in centimeters) of the 8" WG for the SB26ADC SB Acoustics tweeter ? 🙂
Matthias> sorry for the delay, after making it round i kept getting a geometry failure and couldn't figure it out. Dropbox - 5x.75 A_cnc_circle v3.step - Simplify your life
Rokytheman> this doesn't include the phase shield because I don't think you could actually mill that. Dropbox - 8x1.5 D_cnc v2.step - Simplify your life
Rokytheman> this doesn't include the phase shield because I don't think you could actually mill that. Dropbox - 8x1.5 D_cnc v2.step - Simplify your life
Brandon,
I got a pair of your 5" version type A waveguides that Matthias arranged through a group buy (really nice). I will probably be trying them out with a pair of D3004/602000 that I already got at hand.
I haven't really seen your directivity simulations or measurements so I ask you, at what frequency would the 5A WG best match a 6.5” mid-wioofer? Or better, what’s the directivity (horizontal and vertical, in degrees, at -6dB) and cut-off frequency (where it starts losing directivity) of this particular waveguide?
I got a pair of your 5" version type A waveguides that Matthias arranged through a group buy (really nice). I will probably be trying them out with a pair of D3004/602000 that I already got at hand.
I haven't really seen your directivity simulations or measurements so I ask you, at what frequency would the 5A WG best match a 6.5” mid-wioofer? Or better, what’s the directivity (horizontal and vertical, in degrees, at -6dB) and cut-off frequency (where it starts losing directivity) of this particular waveguide?
I got a pair of your 5" version type A waveguides that Matthias arranged through a group buy (really nice) ... I haven't really seen your directivity simulations or measurements so I ask you, at what frequency would the 5A WG best match a 6.5” mid-wioofer? Or better, what’s the directivity (horizontal and vertical, in degrees, at -6dB) and cut-off frequency (where it starts losing directivity) of this particular waveguide?
Take a look at post 331.
Matthias> sorry for the delay, after making it round i kept getting a geometry failure and couldn't figure it out. Dropbox - 5x.75 A_cnc_circle v3.step - Simplify your life
I just ordered a few of these from the CNC fab... let's see how they do.
Brandon,
Do you have any thoughts or experience with using the Peerless DA25TX in a waveguide? I was wondering how this tweeter might perform in one of your 8" guides, and I'm a little concerned about its low-ish sensitivity.
Another tweeter that caught my eye due to its performance with the WG-300 (Heissmann measurements) was the Vifa DX25TG09. However, I believe that has been replaced by the DX25TG59. Any thoughts or experience with this tweeter + waveguide?
Thanks for all your work!
Do you have any thoughts or experience with using the Peerless DA25TX in a waveguide? I was wondering how this tweeter might perform in one of your 8" guides, and I'm a little concerned about its low-ish sensitivity.
Another tweeter that caught my eye due to its performance with the WG-300 (Heissmann measurements) was the Vifa DX25TG09. However, I believe that has been replaced by the DX25TG59. Any thoughts or experience with this tweeter + waveguide?
Thanks for all your work!
I took some measurements of the augerpro waveguides for the Scan Speak tweeters, and compared them to my modified WG148. Look here.
Hi everyone, I'm "playing" with an old pair of Grundig Box RB 500, so I wanna understand if waveguides could help to optimize low sound performances.
Here's the chipboard front (only the tw has a minimal wg):
Do you have any suggestions/hints ?
Thanks in advice !
Here's the chipboard front (only the tw has a minimal wg):

Do you have any suggestions/hints ?
Thanks in advice !
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Hi everyone, I'm "playing" with an old pair of Grundig Box RB 500, so I wanna understand if waveguides could help to optimize low sound performances.
Here's the chipboard front (only the tw has a minimal wg):
![]()
Do you have any suggestions/hints ?
Thanks in advice !
Low sound- bass? Then not at all. If not, it's a big project to figure out how the base system is performing and may/may not benefit from waveguides, not to mention, designing and implementing appropriate waveguides.
Basically, if you can figure all that out, you'll be a speaker designing O.G., but I wouldn't hold my breath.
I took some measurements of the augerpro waveguides for the Scan Speak tweeters, and compared them to my modified WG148. Look here.
Here's a group buy for the circular version of the waveguides for the Scan Speak tweeters.
DIYing a pair of Buchardts. Turned waveguide on lathe from Cherry wood. Old school. But works well and looks beautiful.
....Now if I can get this photo to work.
....Now if I can get this photo to work.

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DIYing a pair of Buchardts. Turned waveguide on lathe from Cherry wood. Old school. But works well and looks beautiful.
....Now if I can get this photo to work.![]()
Pretty!
You need an informational website that has all the detail of 3D printing waveguides. I recommend you to look over it.
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