"Tectonic plates" from the front page.

Re: "Tectonic plates" from the front page.

Absolutely earth shattering and ground breaking.

This is the game changer we have been waiting for.
 
Re: "Tectonic plates" from the front page.

Well, the picture of the four 'cabinets' in a small roadcase makes me at least want to audition the system before laughing too loudly at them.

Good to see they've got their excuses ready, though:
Pointing an SPL meter at the Tectonic Plates is not an accurate measurement of excessive system output, as the DMLs are not producing a pistonic audio energy wave into the room; ie. not producing ‘Sound Pesssure’ that a meter is expecting to measure. SPL meter readings of the Tectonic Plates typically read about 7dB less than actual system output.
 
Re: "Tectonic plates" from the front page.

I was expecting them to use the word "Vortex" somewhere.

Or "gluten free". Marketing is all about "accentuate the positive", even if it's irrelevant.

A theater in Vallejo CA, which is not all that far from me, has one of these systems installed. They do some "real" bands there but admittedly not "varsity level touring acts".

I have had no one who's played there say anything bad about the sound in the house so far. I would love to get up there and put my own ears on it but so far they've only had shows on nights where I've been working elsewhere.
 
Re: "Tectonic plates" from the front page.

While I'll buy that they have developed an area source loudspeaker, the dimensions and claimed directivity fly in the face of array physics. The lack of real datasheets and especially polar patterns also doesn't help their claims, especially with the wealth of sales information on their website...
 
Re: "Tectonic plates" from the front page.

Yeah, this is kind of disturbing. I mean, an area source is cool and all.

BUT UNTIL YOU SHOW ME THE PROOF IT WORKS

I guess they'll just have to show me the money.
 
Re: "Tectonic plates" from the front page.

Yeah, why spend all that time and effort building wave-guides and stuff to have a coherent wavefront when a diffuse field is so much better?
And clearly, random transducer surface movement is much better than transducer break-up, everyone can see that. :thumbup:
Now can someone at Tectonic explain why their stuff is better than a panel full of 4 inch transducers, which surely is a lot simpler to implement? :roll:
 
Re: "Tectonic plates" from the front page.

Yeah, why spend all that time and effort building wave-guides and stuff to have a coherent wavefront when a diffuse field is so much better?
And clearly, random transducer surface movement is much better than transducer break-up, everyone can see that. :thumbup:
Now can someone at Tectonic explain why their stuff is better than a panel full of 4 inch transducers, which surely is a lot simpler to implement? :roll:

Because it is a panel full of 3 inch square drivers, or Sonic Impact 5029 Soundpads stuck to a 24x48 inch foam core board X 4.

Is it a NXT plate like this;
http://www.phy.davidson.edu/fachome/dmb/py115/NXTflatpanel/NXTflatpanel.htm
Or a bunch of 3 inch square drivers like this;
http://www.tectonicelements.com/bmrs/


I wonder how much they are.

No more surprises - my research is done. It is NXT
http://www.tectonicelements.com/flat-audio-technologies-llc-acquires-nxt-hi-wave-audio-assets/
 
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Re: "Tectonic plates" from the front page.

The materials say that above 7kHz they use a ribbon with a wave guide, Per. I guess they won't completely ignore current standards.

Honestly if it works I'll be plenty excited to see someone other than Danley being creative.
 
Re: "Tectonic plates" from the front page.

The materials say that above 7kHz they use a ribbon with a wave guide, Per. I guess they won't completely ignore current standards.

Honestly if it works I'll be plenty excited to see someone other than Danley being creative.

I would almost bet that it works better than that Vortex thingy. What happened to that thingy anyway? Did they get their patent yet?
 
Re: "Tectonic plates" from the front page.

from their own specs, the main component can do almost 122dB continuous yet they claim 4 will handle 5,000 person audiences. I guess so at some volume. Their output drawings look like wool sweaters and while wool sweaters are warm, I can't imagine covering your ears with them makes the sound any better.
 
Re: "Tectonic plates" from the front page.

The materials say that above 7kHz they use a ribbon with a wave guide, Per. I guess they won't completely ignore current standards.

Honestly if it works I'll be plenty excited to see someone other than Danley being creative.

The ribbon drivers are from the dutch company Stage Accompany, type SA8535 without horn (since TectonicAudiolabs claims only 103dB/1W/1m for the ribbon). I have some SA Champ C24S (12" + 8535 ribbon driver with horn). Sounds great! SA ribbon specs: http://www.stageaccompany.com/support/downloadnew/8535_techdoc.pdf.

Where did you find the crossover frequency (7kHz)? That's quite high. A lower crossover frequency (1-2kHz) would make the claim of covering a 5000 seat venue with several ribbons/plates unrealistic, but this high crossover frequency could enable handling the load for the ribbons.
Can't wait to hear them in real life...
 
Re: "Tectonic plates" from the front page.

The ribbon drivers are from the dutch company Stage Accompany, type SA8535 without horn (since TectonicAudiolabs claims only 103dB/1W/1m for the ribbon). I have some SA Champ C24S (12" + 8535 ribbon driver with horn). Sounds great! SA ribbon specs: http://www.stageaccompany.com/support/downloadnew/8535_techdoc.pdf.

Where did you find the crossover frequency (7kHz)? That's quite high. A lower crossover frequency (1-2kHz) would make the claim of covering a 5000 seat venue with several ribbons/plates unrealistic, but this high crossover frequency could enable handling the load for the ribbons.
Can't wait to hear them in real life...

Preliminary specs on this page.
 
Re: "Tectonic plates" from the front page.

So how is 165° below 7Khz (assumed crossover based on posts here) and 10° vertical above 7KHz a "good thing"?

That means that only a few people will get the top octave.

Maybe I am missing something---------------------

Ivan - I need your expert opinion on something.

I know the common sense answer but I need something a bit more scientific.

Take a 18 inch by 20 inch aluminum honeycomb panel, stick a few surface transducers on it
Now shake the thing at 2khz. Assuming that the whole surface is moving at the same time in the same direction (in phase), what does the polar plot look like?

What does it look like if the whole wall is oscillating?
 
Re: "Tectonic plates" from the front page.

Ivan - I need your expert opinion on something.

I know the common sense answer but I need something a bit more scientific.

Take a 18 inch by 20 inch aluminum honeycomb panel, stick a few surface transducers on it
Now shake the thing at 2khz. Assuming that the whole surface is moving at the same time in the same direction (in phase), what does the polar plot look like?

What does it look like if the whole wall is oscillating?

This is a big "it depends" and would really require measurement to see what is actually going on.

A lot of it will depend on the placement of the drivers (in relation to each other and the edges of the plate and the freq being used.

It the whole plate was moving like a piston-that would be one thing, but I don't see anyway that it can-because of all of the different starting places of sound-just like a "unmentionable type of cabinet ;)". So the polar "I suspect" would have lots of finger lobes.

A single driver in the middle would have a lot less "lobing".

Yes sound travels much faster though a solid than through air the normal spacing equations don't work. But I don't see how a piece of material with several "starting points" could move truly as a piston. Maybe kind of, but not as well as with a single driver attached to it. But of course a single driver probably does not have enough strength to make enough sound pressure as desired.

Since the freq will vary-so will all the resonant modes (additions and cancellations)

A "guess" would be that you would get a lot of "free sound" (sound that did not go into the device) as a result, but I have no experience with this and this is purely conjecture.
 
Re: "Tectonic plates" from the front page.

This is a big "it depends" and would really require measurement to see what is actually going on.

A lot of it will depend on the placement of the drivers (in relation to each other and the edges of the plate and the freq being used.

It the whole plate was moving like a piston-that would be one thing, but I don't see anyway that it can-because of all of the different starting places of sound-just like a "unmentionable type of cabinet ;)". So the polar "I suspect" would have lots of finger lobes.

A single driver in the middle would have a lot less "lobing".

Yes sound travels much faster though a solid than through air the normal spacing equations don't work. But I don't see how a piece of material with several "starting points" could move truly as a piston. Maybe kind of, but not as well as with a single driver attached to it. But of course a single driver probably does not have enough strength to make enough sound pressure as desired.

Since the freq will vary-so will all the resonant modes (additions and cancellations)

A "guess" would be that you would get a lot of "free sound" (sound that did not go into the device) as a result, but I have no experience with this and this is purely conjecture.

Thanks

It is like a bell. This panel is just vibrating in air like a bell, but it is flat.

One reason I was thinking it did not feedback standing in front of it is that like my home Acoustats, if you add lots of surface you get lots of volume, but not the pressure or ( " Throw" har har ) like a horn. I can drive you right out of my listening room with level but you do not go because it doesn't drill you. You do not even realize how loud it is until you try to talk to someone else in the room.

That lower velocity is also met by cancelation from all other points on the panel, again a laymen understanding but, The direct sound form the closest point to a mic is canceled by a point slightly longer and longer and longer.


I have to play with one just to find out. A true wall of sound, it is off to the shop.