Small update of 8" waveguides. I've noticed there is something about big waveguides that make problematic tweeters work well. Not sure if it is the mouth size or depth. I'll get the files uploaded to my website by the end of the weekend for this and the last batch of testing since they all came out well.
Here's an analysis of the impact of enclosure shape on waveguides like the ones described here:
Loudspeaker Enclosures are Waveguides
Loudspeaker Enclosures are Waveguides
I mean all WG have the Step file without phase plug but no one have the Step version with phase plug.
Thanks
Thanks John, I've been following
Assuming you need to use the .step for a CNC, what CNC do you have access to that could mill the phase shield? I don't think it's possible, at least as I have designed it. Would be happy if I were wrong though.
Very nice results. I'm wondering what do you mean by "problematic tweeters"?
I see. I'll work on that, might be a bit of a wait. What waveguide were you looking at using?
Soft domes, big domes, big surrounds, etc. Especially with big domes it seems like 5" waveguides are just hopeless without some serious phase plug design.
I'd like to move on to the 1" Scanspeaks. If anyone is willing to borrow me a R2904/7000 or D2904/7100 that would be awesome!
Interesting that big waveguides make problematic tweeters better. I would have thought the opposite. That's great to hear since I'm trying to use a problematic big dome tweeter on a 12" waveguide.
Does it have to be those two models? If not, I have a D3004/6020 from an old speaker I don't use anymore that I can let you borrow if you want.
Does it have to be those two models? If not, I have a D3004/6020 from an old speaker I don't use anymore that I can let you borrow if you want.
Thanks augerpro, the 6,5" as it for 6.5 drive, for rmatch directivity.
I try some time ago to do a 90° constant wg for tweeters, it need a revel like phase plug (round bubulle and donut) and it at to oppen so fast (for avoir throat reflection) that it became pseudo constant. So I dropped it.
Precision have ro be +/-0.1mm also for the donnut, he is especially hard to find the good size and poisition and will interact with the bubble plug. So I stop for 90° and tweter and prefer to use yours.
I thinks you find the good formula, may be add the donnut, but the position is hard... (Even whit help of simulation)
I try some time ago to do a 90° constant wg for tweeters, it need a revel like phase plug (round bubulle and donut) and it at to oppen so fast (for avoir throat reflection) that it became pseudo constant. So I dropped it.
Precision have ro be +/-0.1mm also for the donnut, he is especially hard to find the good size and poisition and will interact with the bubble plug. So I stop for 90° and tweter and prefer to use yours.
I thinks you find the good formula, may be add the donnut, but the position is hard... (Even whit help of simulation)
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Every waveguide is designed for a specific tweeter, and will not mount to others. Which tweeter were you using?
My R2907/7000 are busy making great music in your waveguide, but I have some D3004/6600 collecting dust. I believe the main difference between the 6600 and the 7100 is the motor system.
Yes I don't touch profile, I remove flat part for screws and continue the profile in the reverse direction (and accelerate it a bit) for close the bubulle.
aznovic is a specialist of Ikea bol speakers ^^, he need the bubulle on the top with your WG
Wow, big respect for all the work Brandon! A while ago I asked if you had changed the 6" version of the SB26ADC version, which hasn't been tested yet.
It was this one:
Is this the same version as the one you have posted in the recent post? Or have there been improvemensts to the latest version? If so, are you willing to share the .stl file?
No, it's different. I'll get the current version posted on my site by tomorrow night.