MTM sound characteristics

You wrote ..."makes overall sounds a little less organic and less intimate."

So if those two are the same thing then why describe it as organic? Seems like intimate would be enough. I understand intimate, but still don't get how organic fits in.

I thought maybe you were talking about a speaker with a little garden on top where you could grow vegetables.🙄
 
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Hi Adason,
That MTTTTTTTT...TM looks great! I have always wondered if the compound eye approach would sound good. I guess it does!

Btw, instead of snapping a photo with your phone, try clicking the “capture” button.

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I certainly dont intend to spoil the fun.

However, I see an omni array since its is splaying even the highs to the sides as noted here
MTM sound characteristics

Can somebody explain what contributes to great sound in such a 7 tweeter design? If, its an omni that means the outer tweeters are crossed very low and are not contributing to narrow the directivity. A omni response is same as what we get with single tweeter, right? How are 7 tweeters better than 1 single tweeter when response of both is same? I am not able to understand the Tekton design, never mind the highly positive reviews online of the 7 tweeter approach. They dont seem to be getting any close to constant directivity that waveguides offer.
 
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I'd guess they act different in the vertical plane than a single tweeter would, meaning they do limit the sound output to a more narrow beam in that plane. Together they share the load so they are most probably capable of higher SPL than a single tweeter would be.
So I can see it working better than a single tweeter in a room with floor and ceiling.

Kind of acting like a tall (narrow) ribbon..
 
Hi X, thanks for the info about the capture button. I know about it. Since i have multiple dedicated laptops, the one with rew and soundcard is not set up with internet. I could transfer the capture with memory stick, but its just easier to use phone. I guess i am just lazy this way. I may improve over time 🙂
 
I certainly dont intend to spoil the fun.

However, I see an omni array since its is splaying even the highs to the sides as noted here
MTM sound characteristics

Can somebody explain what contributes to great sound in such a 7 tweeter design? If, its an omni that means the outer tweeters are crossed very low and are not contributing to narrow the directivity. A omni response is same as what we get with single tweeter, right? How are 7 tweeters better than 1 single tweeter when response of both is same? I am not able to understand the Tekton design, never mind the highly positive reviews online of the 7 tweeter approach. They dont seem to be getting any close to constant directivity that waveguides offer.

Better build it and hear for yourself 🙂
 
I certainly dont intend to spoil the fun.

However, I see an omni array since its is splaying even the highs to the sides as noted here
MTM sound characteristics

Can somebody explain what contributes to great sound in such a 7 tweeter design? If, its an omni that means the outer tweeters are crossed very low and are not contributing to narrow the directivity. A omni response is same as what we get with single tweeter, right? How are 7 tweeters better than 1 single tweeter when response of both is same? I am not able to understand the Tekton design, never mind the highly positive reviews online of the 7 tweeter approach. They dont seem to be getting any close to constant directivity that waveguides offer.

It's not what most people would call omnidirectional since that would imply a spherical radiation pattern, or near-as in a practical room. It's just a coax that happens to be made up out of 7 tweeters instead of a cone with a single central dome. The outer tweeters are rolled off with a cascaded low-pass to avoid undesirable phase interactions. They can get away with crossing quite low because a/ the tweeters are themselves reasonably well-suited to lower crossover frequencies, and b/ at the bottom end of the passband they've got all 7 running, which gives about the same (or slightly more depending on model) emitting surface than a 4in midrange driver, significantly lowering distortion for a given SPL relative to a single tweeter.
 
Hi X, thanks for the info about the capture button. I know about it. Since i have multiple dedicated laptops, the one with rew and soundcard is not set up with internet. I could transfer the capture with memory stick, but its just easier to use phone. I guess i am just lazy this way. I may improve over time 🙂

Ok, I would do the same if if no internet. 🙂 A USB WiFI adapter is like $3 (China) and $10 (Amazon) in case you change your mind and want to make it connected.


TP-Link USB Wifi Adapter for PC N150 Wireless Network Adapter for Desktop - Nano Size Wifi Dongle Compatible with Windows 10/7/8/8.1/XP/ Mac OS 10.9-10.15 Linux Kernel 2.6.18-4.4.3 (TL-WN725N) Amazon.com: TP-Link USB Wifi Adapter for PC N150 Wireless Network Adapter for Desktop - Nano Size Wifi Dongle Compatible with Windows 10/7/8/8.1/XP/ Mac OS 10.9-10.15 Linux Kernel 2.6.18-4.4.3 (TL-WN725N): Computers & Accessories
 
Good point. The updates keep making it more and more sluggish. Until one day it is so slow you are forced to wipe the HD and start over or upgrade to more powerful CPU, more memory and bigger HD.

I remember when an 80MB HD was considered big. 🙂

My laptop now has two 1 TB drives. They still get full.
 
Better build it and hear for yourself 🙂

Adason,

Great work. I'm interested.

I realize back on post #98 you told me you "do not shimulate", but I'm looking into it to learn. Attached planet10's depiction of the Tekton xo, which you linked to on #99.

Would you mind sharing which drivers you are using and the inductor values marked "xx mH" you are using, as well as any other parts you might have changed from this. I do not have the drivers nor the xo parts, and would like to shimulate to help me understand the design.
 

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Anyway, I find a real drawback of MTM is M units do not move exactly the same. Moving detached 2 membranes adds very slight something, makes overall sounds a little less organic and less intimate. I don't know how I should call this effect. It's not as bad as 6 string guitar vs 12 strings, but it's audible. For people who prefer full range to multi units, it's would not be trivial, and it should be considered.
I'll never think of a 12 guitar the same way again. All that lobing... Sorry to revive the thread but that was funny.