The last Unity horn kit that I did worked fairly well, so I thought I'd try this again.
Back in the day, Richard Clark was a big inspiration for my projects. He wrote "When we develop the perfect loudspeaker, it will be a single wide band point source. But until then, the best way to achieve that is with a minimum number of speakers.
This new design does a good job of attaining that goal, I think.
Here's two pictures of the speaker. It's a work in progress.
Here's the phase and magnitured response, with EQ and xover. I think this is quite good, but it will get better. EQ settings are shown in the small boxes in the pic.
Here's the polar response, with EQ and xover. EQ settings, again, are in the small boxes. I think this polar response is very good. The five drivers are basically behaving like a single unit. The curves are at 0, 11, 22, 33, 44 and 55 degrees.
For comparison's sake, here's the Revel M16, which performs very well.
Here's the response of the tweeter and the woofer array, using a single resistor and a 2khz high pass on the tweeter. As you can see, the tweeter is much MUCH more sensitive than the woofer array. This measurement is with no box, so output at low frequency is limited.
Back in the day, Richard Clark was a big inspiration for my projects. He wrote "When we develop the perfect loudspeaker, it will be a single wide band point source. But until then, the best way to achieve that is with a minimum number of speakers.
This new design does a good job of attaining that goal, I think.
Here's two pictures of the speaker. It's a work in progress.
Here's the phase and magnitured response, with EQ and xover. I think this is quite good, but it will get better. EQ settings are shown in the small boxes in the pic.
Here's the polar response, with EQ and xover. EQ settings, again, are in the small boxes. I think this polar response is very good. The five drivers are basically behaving like a single unit. The curves are at 0, 11, 22, 33, 44 and 55 degrees.
For comparison's sake, here's the Revel M16, which performs very well.
Here's the response of the tweeter and the woofer array, using a single resistor and a 2khz high pass on the tweeter. As you can see, the tweeter is much MUCH more sensitive than the woofer array. This measurement is with no box, so output at low frequency is limited.
damn! this looks a lot better than most of the earlier stuff, no widening near the top at all! its a lot more 'CD' how do you feel the sound is?
very good I like the roundover combined with the waveguide. Nice high crossover as well. New printer?
I went out on a limb with this one, because I had a hunch that a big roundover combined with a relatively deep enclosure would yield good polars.
This was almost 100% based on belief I had, that Revel saves the roundover for their big expensive speakers (The Salon) while the less expensive ones don't get it (The M16.)
Here's the polar response with no baffle, and WITH a baffle. The addition of the baffle seems to extend the beamwidth control to a much lower frequency than one would expect from a waveguide that's 30cm wide.
It might have been possible to simulate this with ABEC, but at some point I just said "YOLO" and built the thing, because creating the model in ABEC was just going to take too long.
Here's a pic comparing the top of my speaker, and the Revel. I'm not 100% sure if the curved sides are cosmetic or functional, but I'm pretty confident that the long depth is intentional, and contributes to beamwidth control.
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ET, terrestrian resident yet : "give me back my public toilet bidet please !" 😛
(I permitt myself as iI liked the humor of the picture with the kitchen aluminium same material looking devices behind 😀)
(I permitt myself as iI liked the humor of the picture with the kitchen aluminium same material looking devices behind 😀)
John, that looks really good. How did you print the horn? Looks pretty large. Any photos of the drivers mounted to the back of it?
What about the "hat" or roundover in top of the revel? Is that cosmetic or does it improve the polar. Revel uses the same structure in many of their speakers, on the area of the speaker that is neither curved or slanted. From a manufacturing standpoint, it's brilliant ( if it ain't cosmetic) as it is much easier and cheaper to add a plastic piece vs other manufacturing technique. My point that it could be a second print to glue in top of the enclosure (assuming it is not cosmetic). I have been obsessively reading the speakers are waveguides post and the revel post on audio science review, given the "unexpected" amazing results of directivity control of the revel and I was considering creating a similar "hat" for a two way design in progress. . The box looks very nice. Looking forward more info.
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That looks great Patrick. If I was in the market for a new waveguide and speaker build, this would be at the top of my list.
@ Frabor
Certainly both purposes. P B wrote a thread about that...cabinet is acting like a wave guide. Add also it can be a breaker ar some frequencies to avoid the panels to sing too much...and it definitly looks nicer.
So it s a printed one...with the light it looked like stamped aluminium to my eyes. Definitly looks like the JBL M2 wave guide but a la Synergy sauce...
It will be great when brands have permission to sell synergy design...
Certainly both purposes. P B wrote a thread about that...cabinet is acting like a wave guide. Add also it can be a breaker ar some frequencies to avoid the panels to sing too much...and it definitly looks nicer.
So it s a printed one...with the light it looked like stamped aluminium to my eyes. Definitly looks like the JBL M2 wave guide but a la Synergy sauce...
It will be great when brands have permission to sell synergy design...
Awesomeness...can a person utilize a large woofer like 15" into a synergy type mechanism?
ps- people say you post gigantic pictures, they tell no lies...I have no issues on my 65" but on a small monitor it might be a right/left scroll type of situation? isn't there a way to post pics with tiny thumbnails?
ps- people say you post gigantic pictures, they tell no lies...I have no issues on my 65" but on a small monitor it might be a right/left scroll type of situation? isn't there a way to post pics with tiny thumbnails?
i'm on a 27" and have no problems, but this monitor has pretty decent pixel density, so probably the same resolution as your 65 or higher.
Great appearance!
The front is very nice, Patrick. Far superior to the usual aesthetic horrors 😀
The front is very nice, Patrick. Far superior to the usual aesthetic horrors 😀
Patrick, when you say kit, is this a waveguide that you are thinking of printing and making available for purchase? Glenn.
1) What drivers are we using here?
2) I would be interested in making this, looks like a fun project!
2) I would be interested in making this, looks like a fun project!
Yep.
Basically a 2021 Unity kit, similar to the one I did in 2019.
I made a couple changes to the model before making a second print, to improve it a little.
I'll post the STL and 123D files soon...
I was getting a bit nervous not seeing another Patrick Bateman's thread for some time - and here it is! Very interesting indeed.