The website has gotten up, but unstable operation is possible during some weeks. We need to completely clean it from virus software.
Good news. I guess there is always a copy offline for emergencies like these and I am glad you guy's are able to pull through mostly unharmed.
The backup is made every day, so there is no risk of losing information. But reliable real-time functionality need to be restored
I found their tweeters are also very interesting.
They use a inner resonator inside the tweeter back chamber make the tweeter work like
a vent speaker instead of a sealed speaker like almost tweeters.
You can see the impedance curve has two peak just like the vented speakers also have too.
They use a inner resonator inside the tweeter back chamber make the tweeter work like
a vent speaker instead of a sealed speaker like almost tweeters.
You can see the impedance curve has two peak just like the vented speakers also have too.
They do indeed use an absorber but the 2nd peak is not due to vent properties but rather Fs in their 2nd chamber. They literally state; "Dual chambers system" 🙂
Their mids/woofers look brilliant. Tweeters look like they need more work - rough response and multiple resonances in the impedance.
Except the mid.s have way to much mechanical resistance.. OK if you play them lower than they should go or super loud, but otherwise not great..
Makes for an excellent non-linear result though.
Makes for an excellent non-linear result though.
Have you seen these pictures of bliesma 3" dome prototypes ? I I guess the price of the 100% béryllium will be substantial 😉
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According to the link provided by nanou64000, Bliesma is developing a 3" mid-dome. Very interesting !
The berylium dome will be the first to be released but an aluminium, paper and fabric dome are coming later. Flange is 121mm wide and 10mm thick according to Malikov (Bliesma founder/engineer). This 121mm flange claim seems to be consistent with the photos he has posted, where we can see this new mid-dome next to a T34 tweeter. At long last a mid-dome without a stupid, unnecessarily large flange, which will allow higher crossover with the tweeter ! The surround also seems to be quite narrow, like the tweeters from Bliesma.
Since the images are not that easy to find in this russian forum, here are the photos Malikov has posted.
The berylium dome will be the first to be released but an aluminium, paper and fabric dome are coming later. Flange is 121mm wide and 10mm thick according to Malikov (Bliesma founder/engineer). This 121mm flange claim seems to be consistent with the photos he has posted, where we can see this new mid-dome next to a T34 tweeter. At long last a mid-dome without a stupid, unnecessarily large flange, which will allow higher crossover with the tweeter ! The surround also seems to be quite narrow, like the tweeters from Bliesma.
Since the images are not that easy to find in this russian forum, here are the photos Malikov has posted.
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Interesting, I guess the Be version will be an option for the ATC SM75-150 or Volt VM752 and probably at a similar price at least, guessing 500euro plus each. If the Al, paper, fabric can do 600hz to 4khz flat with LR2 and come in around 200Euro each that would be an interesting option to the EM1308 and Scanspeak 3” dome and may rival the Scanspeak 12MU for mid duties. Hopefully it will not be a “filler” dome like the Satori MD60 but a true mid.
All my speculation but an interesting option for mid duties in a 10+3 dome+0.75 old style monkey box.
All my speculation but an interesting option for mid duties in a 10+3 dome+0.75 old style monkey box.
Thanks for posting the pictures, it tried but without success. According to Google traduction, it seems that Stanislav designed this dome to match the t25 tweeters. I already imagine really expensive 3 way 10+3+1 (in my dreams because totally out of budget 🙂)
Cant wait to see preliminary values (during summer ?) and following Hificompass reviews (one day). Based on hificompass tweeter reviews, bliesma datas match really well the reality.
Cant wait to see preliminary values (during summer ?) and following Hificompass reviews (one day). Based on hificompass tweeter reviews, bliesma datas match really well the reality.
@Ugg10
My guess is that the prices will be higher than 500€ a piece, especially for the Be version. The T34B are already 400€ each. In the russian forum, Malikov said something along the lines of a very high price that he prefers not to reveal yet (that's by using a translator though, it was not really clear).
My guess is that the prices will be higher than 500€ a piece, especially for the Be version. The T34B are already 400€ each. In the russian forum, Malikov said something along the lines of a very high price that he prefers not to reveal yet (that's by using a translator though, it was not really clear).
The 3" Be dome is going to be very expensive. That's a huge amount of Be compared to a tweeter. It will be interesting to see where it has its primary breakup.
To compete with the ATC/Volt tweeters they are going to need a large amount of xmax, not sure if they look capable of that from the pictures but we shall see.
To compete with the ATC/Volt tweeters they are going to need a large amount of xmax, not sure if they look capable of that from the pictures but we shall see.
9kHz
(Fc=2*345/dia, where dia is the dome diametre in metres. No surprise that the breakup of an RS52AN is bang on 13kHz as predicted. Very little influence on Fc by the materials once you reach the rigidity of aluminium)
Problem is centre to centre distance, so even if the flange becomes a thin ring, because it's a 3" dome the centre to centre distance is still substantial. If other 3" dome have a 150mm flange and this one happens to be 130mm, the crossover can only be 150/130 = 15% higher, which is not worth writing home about. If the breakup is 9kHz as predicted, there is going to be a spike in distortion at 3kHz (3rd order) and 1.8kHz (5th order) anyway. Assuming the motor is exceptional and 5th order distortion is very far down, you probably still don't want to cross higher than 2kHz, to avoid CTC issues and the 3rd order distortion spike.
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I knew Malikov was working on a 3" midrange driver and now we finally got to see a proto. Nice.
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On the russian forum, Malikov himself said that the flange diameter was 121mm. By comparing the diameter with the T34 (104mm) on the pictures, I also find 121mm. Therefore, this information seems to be true.
I agree with you otherwise. My point concerning the flange diameter specifically comes from the center to center distance problem. If we can cross 15% to 20% higher, that is still some desirable flexibility to have, or to reduce lobbing at a given frequency. Since it is pretty much a free incremental improvement from a design perspective, why should we not welcome it ? When nearly all other manufacturers build unnecessarily large flange for similar drivers (or tweeters), it's good to see something making sense for a change.
For instance on most ATC speakers, the 104mm tweeter and 150mm mid-dome results in a CTC distance of around 130mm. The Bliesma 67mm T25 and 121mm mid would give a CTC distance of slightly less than 100mm. A difference of around 30% is not to be scoffed at IMHO.
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