I would prefer T34B for Satori MW16P. But with 6.5" Circular WG it looks like a bit awkward. 6" would be perfect
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Excellent, you deserve a wider audience on your work, and we will get I guess new sets of reference measurements ...
Can someone help me out to alter the 4"waveguide for SB26-ADC to match the size of a SB12MNRX2?
Keeping the original shape of the waveguide of course, but make a round frontplate which has the same size as the SB12MNRX2 driver and same positions of the scrww holes.
I dont have any knowledge about designsoftware
Keeping the original shape of the waveguide of course, but make a round frontplate which has the same size as the SB12MNRX2 driver and same positions of the scrww holes.
I dont have any knowledge about designsoftware
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I have T25B on order, 2-way pairing with Purifi 6.5X04 in a 13L enclosure with 2 PRs. Shifting from a DXT 27T, which is great, I’d like to explore the Bliesma with a WG available on tap. Seems that an oval design might be better suitable for my listening room which is relatively large 4m x 9m x 3.5m high (no carpets, limestone floor, concrete walls and lots of glass windows). Assuming that I’ll run active, which wg size would you recommend? I like a small tweeter visually (5”68) yet it’s secondary to audio quality.
Currently I'm crossing at 2.15 KHz with the DXT, I'm hoping to drive the T25 lower towards 2KHz or maybe less. I'll need to do some measurements and attempt to align phase. 6" or 6.5" oval or circular ?
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I've started designing two families of speakers, one family based on SB "ceramic" drivers, and the other on Satori Textreme and Bliesma Be drivers. Yesterday I measured the prototype of a 2-way TM speaker to verify diffraction modeling. I just wanted to share some of those measurements, I'm very happy with the results. Waveguide is working properly and the T25B is so smooth on it. Just as important, the woofer hardly shows any diffraction hump, just like the ABEC model but I had my doubts it would actually look so good. Plots are 0-60 degrees horizontal, 7.5ms gate and no smoothing.
Here are some additional details about the new designs. Waveguided tweeter of course. Simple CLD construction based on my testing in another thread. High performance port that will be available for printing in 3 variants: high performance contour, HP contour with full damping of port resonances, HP contour with some damping of port resonances, but better chuffing/distortion behavior than the full damping version. Both active and passive versions. If there is interest after I publish the TM proofs-of-concept, I'd like to move on to a WTMW center channel, and main speakers of undetermined layout. But constrained vertical directivity will be a goal for the mains, so possibly MTMWW or WMTMW.
Excellent news! Thank you for all the research!
Regarding the speaker family based on SB "ceramic", are these TM? what size/model of woofer?
Also, looking forward to the livestream with Erin!
I've read: "I'm also working with Erin on a video he wants to do on waveguides, and his Klippel will give me the data I need", and inmediatly thought about a livestream!
So, he will measure your waveguides or the whole speaker? anyways, I think the data Erin will provide you, will surely help!
Loonking foward to those designs! Speacially the TM (better yet if it can work in a sealed alignment
This will be most interesting. What's your hypothesis?
I suspect better low end performance allowing reduced distortion at lower XO frequencies eg. 1KHz and better directivity match. At the top octave, the far off-axis (60-90 degrees) will be reduced.
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Exactly what I experienced... namely that direct radiating tweeters, seem to sound more "sparkly" but less precise, because they send out more reflective energy in the room, instead of a waveguide, that focus the sound more evenly to the listener.
I really enjoy this waveguide - you did great work with it
I was at the RMAF when Geddes premiered his Summa loudspeakers. One of the things that was a bummer was that 50% of the people took one look at the waveguide, thought to themselves "I hate horns" and walked right out. Couldn't even count how many people bailed after less than 15 seconds.
It's a bummer - I made a leap of faith and bought the speakers, but it took me about a week to get accustomed to how waveguides sound different than direct radiators, and even to this day I agonize over what the "ideal" balance is, between direct and reflected energy.
Excellent!
Would it be helpful to send the whole TM speaker to Erin to measure it with the Klippel? With measurements with that resolution it might be helpful to tune and optimize the passive crossover network. Are you located in the US?Higher directivity with the waveguide