SBAcosutics membrane/diaphragm question

Hi to Everyone,
i have a very serious question regarding the type of "fabric" membrane of SBAcoustics, such as TW29D or TW29R of the SATORI series against the basic series for example SB29SDAC or SB29RDAC because at first sight they seem identical and if it were so it would be a kind of bluff.

The scan-speak instead uses a type of "fabric" membrane for the discovery series and another for the top series, it is very obvious visually.
Also it even seems to me that the scan-speak membranes of the discovery series are very similar/identical to all the "fabric" membranes of SBAcoustics.

But how is this possible?, does anyone know anything?
Thank you very much.
 
i have a very serious question regarding the type of "fabric" membrane of SBAcoustics, such as TW29D or TW29R of the SATORI series against the basic series for example SB29SDAC or SB29RDAC because at first sight they seem identical and if it were so it would be a kind of bluff.
First up: why would it be 'a kind of bluff'? Why does the fact that one form of fabric looks similar to another apparently (according to this logic) make them identical? And even if they were, why are you assuming that they have the same coatings [since many soft-diaphragm tweeters are coated], and, making a further assumption, if that too is identical, why that is apparently the sole determining quality of the tweeter? Suspension & motor design are equally important.

The scan-speak instead uses a type of "fabric" membrane for the discovery series and another for the top series, it is very obvious visually.
Actually, they don't. Not entirely. 'The' Scan Speak use a variety of different materials, some of which are consistent across the ranges & differ in the coatings applied (the ring radiators are a good example) -ignoring of course all the other significant differences that exist. And that's before you get to items like the 9130 -originally designed by Scan as the range-topping Peerless HDS tweeter & retained by them when the companies parted ways -very different to any other Discovery, Illuminator or Revelator model, with a unique dome material [for the company] & probably conceptually closest to the Classic 9000 series tweeters -although different from them too. The 9000 series are a good example too, since they started with the long-defunct sticky dome 9000; in its place we now have the 9300, 9500, 9700, 9800 [irrelevant here as it's an aluminium dome model] & the 9900, this last being classed with the Revelator range. These drivers share the same dome, and progressively ascend in price. Are you saying they are 'bluffing' and there is no different in performance despite the radically different chambers, motor designs & in the case of the 9900 a shallow waveguide, just because the basic diaphram happens to be made from the same material?

Also it even seems to me that the scan-speak membranes of the discovery series are very similar/identical to all the "fabric" membranes of SBAcoustics.
How have you performed this analysis? You have dome a detailed comparison of the dome profiles / geometry, and have access to the supplier of the basic dome materials / coatings and can confirm they are the same materials, in the same thicknesses, in the same formed profiles with the same additives & coatings applied, in the same quantities? This is sounding rather like politician's logic: 'My dog has four legs. My cat has four legs. Therefore my dog is a cat.' They will likely have similarities; there are many historical connections between the two companies & form ultimately follows function, but that doesn't mean they're identical.
 
I have 2 SBA fabric tweeters and the Satori fabric dome. Sonically, all 3 are very impressive, easy to cross, and very relaxed, clear. And detailed without sounding shrill.

The better motor in the Satori allows it to be crossed lower, and with a less aggressive rolloff. So it is easier to blend well with a larger midrange.
 
The biggest difference between the Satori and the normal SB range is indeed the motor i think Membranes are very similar at least (except for the rare materials in some). They look often the same, but details are different.

But they are all great within their intended range and very cheap compared to many other brands. That is why Seas and Scanspeak, both making great tweeters actually, is not really an option i consider anymore. They are just to expensive when you have those cheap SB that is as good.
 
just stay away from the smaller motor/faceplate version like SB29RDNC unless you want cross it in 4kHz range - just too high distortions below 3-4kHz. The fabric in the Satori series is the same as in regular SB tweeters - better motor and more advanced venting and damping of the chamber is what makes them perform better.
The Ring domes to me are too damped, too laid back, too mellow in character. I would say the Classic series from Scan, or copies by Usher are more of a standard sounding examples of a successful tweeter design. The older Parts Express Reference series fabric dome tweeter was a good one, I wish some other manufacturer would resurrect this design. There are other approved by many designs which forever disappeared from DIY market that I wish reappeared again.
 
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so let's also throw the "normal" domes in the garbage just because you don't like the "ring" ones.
Have you listened to the TW29DN?
You shouldn't compare the ring domes vs the normal ones, it makes no sense
who gives you the certainty that the SB basic domes are the same as the satori, some source?....or just visually?
 
Well, that makes sense. :scratch: Since you accept it's irrelevant whether they are or not, why are you bothering to ask? As I've said above: yes, some SB units share a basic material or dome profile, as do many Scan, Seas &c. units, as is well known & confirmed by employees / owners. In exactly the same way an Audi A8 has components made out of the same material as the A1. So what? As I asked before, why is this

a very serious question
And therefore supposed to be

a kind of bluff.