Thanks for the tips and info about the patent!
If I'm reading it right, (English isn't my native language) the idea of Akylyte panel isn't bad at all because of the way it's made. As I would have it printed, I can not add another skin to the front. For the rear I could experiment of course.
I think I might have to add a frame and suspension as well after reading 😉
If I'm reading it right, (English isn't my native language) the idea of Akylyte panel isn't bad at all because of the way it's made. As I would have it printed, I can not add another skin to the front. For the rear I could experiment of course.
I think I might have to add a frame and suspension as well after reading 😉
↑↑ @proxii
I am not all that sure about how polypropylene would sound, but the way it is made is interesting, a honeycomb. And, it is cheap, for the first try. I've a feeling that these kind of boards are there in construction material shops (OBI, Action) and advertising material shops. It would be better, if you can see it and tap on it to hear how it sings. You are in Netherlands, I believe. Anyway, try to read that patent pdf with a translator. You'd lose a few days, but understand a lot after. Just ignore the equations/formulae, read just the needed stuff.
I am not all that sure about how polypropylene would sound, but the way it is made is interesting, a honeycomb. And, it is cheap, for the first try. I've a feeling that these kind of boards are there in construction material shops (OBI, Action) and advertising material shops. It would be better, if you can see it and tap on it to hear how it sings. You are in Netherlands, I believe. Anyway, try to read that patent pdf with a translator. You'd lose a few days, but understand a lot after. Just ignore the equations/formulae, read just the needed stuff.
Further to post #8,860
About damping
The first point reminds me of the 'under damping' of the Göbel patent.
About damping
- The suspension/surround may damp the edges of the radiator panel to prevent excessive edge movement of the panel without generally preventing desired edge vibration.
- Additionally, or alternatively, further damping may be applied as patches, bonded to the panel in selected positions to control particular frequency modes in damping excessive movement, and help distribute resonance more equally over the panel.
- The patches may be of bitumen-based material, as commonly used in conventional loudspeaker enclosures or may be of a resilient or rigid polymeric sheet material.
- Some materials, notably paper and card, and some cores may be self-damping.
- Where desired, the damping may be increased in the construction of the panels by employing resiliently setting, rather than rigid setting adhesives.
- Effective said selective damping includes specific application to the panel including its sheet material of means permanently associated therewith.
- Edges and corners can be particularly significant for dominant and less dispersible low frequency vibration modes of panels hereof.
- Edgewise fixing of damping means can usefully lead to a panel with its said sheet material fully framed, though at least their corners can often be relatively free, say for desired extension to lower frequency operation.
- Attachment can be by adhesive or self-adhesive materials.
- Other forms of useful damping, particularly in terms of more subtle effects and/or mid and higher frequencies can be by way of suitable mass or masses affixed to the sheet material at effective medial localised positions of said area.
The first point reminds me of the 'under damping' of the Göbel patent.
Why start with 2 excitors per panel?
One can produce extraordinary sounding DMLs with single exciters.
Don't complicate something before you have a reason to do so.
Start simple.
Why not?
Two exciters per channel is quite a good idea. #8,761
I'd have made the radiator panel about 560 mm x 360mm, so the whole loudspeaker would become about 600mm x 400mm, and about 50-60mm thick. Would be compact and probably hi-WAF. But I won't go for the grills. The back will be completely covered and damped. Maybe some bass-reflex holes on the side. Or, maybe use the golden ratio 1.618, they say pleasing to the human eye. 🙂 Fixed on the wall like a picture. NXT was talking about shallow enclosures. #8,733
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I think the Akylite is worth a try, but since I haven't tried it myself I couldn't say for sure.
I have tried Dibond, and it's way too heavy.
I have not tried Forex, but have tried other lightly foam PVC panels, and they too are heavy and not stiff. Probably Forex is too.
Eric
Thank you, this is the one I found in the patent you linked. Have you seen other places mention of cuttings?
I filled grooves and cuts with polyurethane sealant. On another panel also sealed the end grain balsa pores with it.
Attachments
Hi Pixel1,
The Tectonic panels seem to be connected rigidly to the frame at the 4 points and by soft material on more than 50% of the length of each of the four sides.
Check the link below for a better view.
Eric
https://tectonicproaudio.com/about-the-technology/
You've deduced all this from your vast range of personal experience and testing?👏👏😏😴🥴🥺🥱
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Chdsl.
I would also add, that I would never recommend buying something that I had not tried and tested myself, even more so to a new visitor to the forum, who might think you understood what you were talking about.
think about what you are saying.
Steve.
I would also add, that I would never recommend buying something that I had not tried and tested myself, even more so to a new visitor to the forum, who might think you understood what you were talking about.
think about what you are saying.
Steve.
More money.
More complicated.
More bits to fall off.
More bits that may need tweaking.
More wiring and/ or more amplifiers.
No objective proof that multiple exciters work better than single ones that I've seen.
Problem is you havent made/built it yet. An opinion without any actual experience to back it up is moot. Just like how you claimed that the design pattern on that panel (that you said looks like a Japan flag) has no value audio wise and is only used to empty ones purse.
So, how many complete speakers/speaker systems have you made, since 2014? Can you show a picture of just one system? 🙂
Yes, I do. Yours is a resonance box, not a distributed mode loudspeaker, even if the creation looks stunning. 🙂
Simple, that's all in the NXT patents. Tectonic labs, the owner of the intellectual property of HiWave Tech/NXT does exactly that. There's also someone here, who most times silently listening in, making them for a living with his team. In a way, that opened my mind to the correct direction. The best is for the newcomers or those still to make a distributed mode loudspeaker is not to make the same mistakes of the "gurus." Better read the documents/patents than get headaches later. Most here think that they have a distributed mode loudspeaker, but do they?
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