That leads to the more serious question:
Do you feel you could blindly spot the Beyma from the RAAL, once EQd and SPL-matched ?
Do you feel you could blindly spot the Beyma from the RAAL, once EQd and SPL-matched ?
Last time we tried something like this (midrange blind test) it didnt work. Ex; ATC dome v.s. 8'' wideband
Can't do that.
Must have the same xover points for a proper comparison. Probably 2.7khz is your best bet.
i get that, but in that case it's not a ''blind test'' but rather just a comparison test. Not only you listen to different xover points, but it's midrange-dependant. Result may vary with different midranges.
If i were to organize a proper blind test, i'd test 2khz for both AND after 3khz for both. Not 2/3khz.
Anyway, there is no problem to EQ the 140-15D down to 2khz. 1.5khz might be a problem, but 2khz it's still good.
Just sayin', coz you're in the ''worlds best tweeter blind testing'' thread
Anyway, there is no problem to EQ the 140-15D down to 2khz. 1.5khz might be a problem, but 2khz it's still good.
Just sayin', coz you're in the ''worlds best tweeter blind testing'' thread
also, if they're not physically at the same place, it's moot. Basically, forget about any proper blind test at your place, it's here in the lab that would make sense, with the Cube, etc... 🙂
No problem at all. I have a box full of Mundorf's and Solen's inductors 🙂 Just don't forget your soldering iron!!
still up for 100 bucks for your Beyma against my 3fe22 ?
https://en.wikipedia.org/wiki/ABX_test#Confidence
9 out of 10 is the bare acceptable minimum, but if you get only 8/10 i'll accept to continue until a 12/15 or better for you to win 🙂
https://en.wikipedia.org/wiki/ABX_test#Confidence
9 out of 10 is the bare acceptable minimum, but if you get only 8/10 i'll accept to continue until a 12/15 or better for you to win 🙂
Frankly, why would anybody want to work with any of these two tweeters? Straighter ones can be found, that also go lower. What am I missing here?
Would like to see this one tested...
Transducer Lab, N28BER-G
I have the RT-4001's so know what the test results should look like.
Transducer Lab, N28BER-G
I have the RT-4001's so know what the test results should look like.
compared the RT-4001 that day too... Not in the same league.
And i wouldnt bet on any Tlab either, based on what i heard from the carbon version. Or actually based on 25 years of listening to dome tweeters 😉
Also the Ribbon Fountek are not there.
Bottomline, RAAL are the world's best transducers for the last 1½ octave, that's pretty much absolute.
As far as 6,000hz and downward is concerned, i don't know. But maybe RAAL is still there for 1 more octave, or there is some cones, AMT or CD out there that can do a better job. But that is another story...
Well, it seems we all miss something somewhere, because two flat curves compared each others are expressing themselves very, VERY differently.
For some reasons, the sonic signature of the RAAL ribbons is very unique.
Stop the betting crap and measure! If you look at the TL drivers specs it has a beryllium dome with a low Fs of 560Hz and higher excursion 1.2mm p-p than any other Be dome driver I have yet seen to date. It's MMS is 0.27g which is inline with the best Be tweeters out there.
BTW carbon has been long known to store energy, poor choice to start with.
The comments on the RT4001 are typical when not used properly eg crossed too low. Once equalized and crossed properly it does quite well, but alas not top of the line and nobody should expect top of the line performance from a $60 tweeter. It does much better when coupled to a waveguide. The biggest gripe I have with it is inconsistent specs from one driver to the next. I got lucky with two that are very well matched.
IMO the RAAL is best suited for use as a super tweeter
FYI I'm not looking for "the absolute best", just within that "you cannot perceive the distortion" e.g. <0.25%. My setup is typically active, but depending on what I test or design is a combination of either active, passive or both. There are more design aspects than just flat response and low distortion when designing a complete speaker. CTC spacing and dispersion play a critical role too.
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