oh... 1/3 the price... not that bad 
I really like the DXT... and it's difficult to compare properly with the T25B, since that tweeter is playing way more in all directions, compared to the DXT. A waveguide makes the tweeter more directional, which also makes it more "free" of the room. So when you listen to a T25B, it will "shine" more, since it makes more reflections on all surfaces in the room, and you will hear that as more high frequency, and this will also make it sound like there is more of the tweeter sound, but sound has to come from the right direction in the right time - direct vs reflected sound - or else stereo image won't be good.
So it all depends on a lot of how you use it and in what room you are using it in too.
I tried the T34B against my DXT in a very well dampened room, where I actually wanted to test a set of SB MW16TX midranges against a set of Dayton RS125. Here it was clear to me, that the midranges is much more important to me - now I bought the MW13TX, because it is even easier to cross to the DXT.... but I still liked the DXT more, since it gave a much more precise stereo image, because of the waveguide. The T34B seemed to spread the sound in all directions, which for me is not good for great stereo. The waveguide also makes it much easier to cross to the midrange and give a smooth and even power response. My inspiration to using the DXT, came from Heissmann acoustics:
https://heissmann-acoustics.de/en/
If you look at the different constructions he made with DXT. Then you can clearly see how it's possible to get a very smooth and even response.
Don't be afraid of the slanted/angled baffle. I cut mine with a handsaw and patience And the narrow baffle really helps the DXT to work its best.
Many people focus alot on the on-axis - but we have to look at the off-axis too, if we want excellent sound and of course - the best possible output from the drivers we chose.
Look at how the MW13TX starts to beam more and more above 2kHz:
https://www.soundimports.eu/en/sb-acoustics-mw13tx-4.html
Then you can see how the DXT starts to beam too, around 2kHz, where the response starts to fall off, as the frequency increase.
https://heissmann-acoustics.de/en/test-seas-dxt-27tbcd-g/
Now, when you cross around 2kHz and keep the drivers physically close. Then the DXT will smoothly take over the work from the midrange, and you will end up having a smooth transition which makes it almost impossible to hear that you have two different drivers working together, in the same frequency area - works like a charm in my system
Using a Purifi driver - chosing a crossover respecting its size(size dictates when it starts to beam), should give you an equally great result
I really like the DXT... and it's difficult to compare properly with the T25B, since that tweeter is playing way more in all directions, compared to the DXT. A waveguide makes the tweeter more directional, which also makes it more "free" of the room. So when you listen to a T25B, it will "shine" more, since it makes more reflections on all surfaces in the room, and you will hear that as more high frequency, and this will also make it sound like there is more of the tweeter sound, but sound has to come from the right direction in the right time - direct vs reflected sound - or else stereo image won't be good.
So it all depends on a lot of how you use it and in what room you are using it in too.
I tried the T34B against my DXT in a very well dampened room, where I actually wanted to test a set of SB MW16TX midranges against a set of Dayton RS125. Here it was clear to me, that the midranges is much more important to me - now I bought the MW13TX, because it is even easier to cross to the DXT.... but I still liked the DXT more, since it gave a much more precise stereo image, because of the waveguide. The T34B seemed to spread the sound in all directions, which for me is not good for great stereo. The waveguide also makes it much easier to cross to the midrange and give a smooth and even power response. My inspiration to using the DXT, came from Heissmann acoustics:
https://heissmann-acoustics.de/en/
If you look at the different constructions he made with DXT. Then you can clearly see how it's possible to get a very smooth and even response.
Don't be afraid of the slanted/angled baffle. I cut mine with a handsaw and patience
And the narrow baffle really helps the DXT to work its best.Many people focus alot on the on-axis - but we have to look at the off-axis too, if we want excellent sound and of course - the best possible output from the drivers we chose.
Look at how the MW13TX starts to beam more and more above 2kHz:
https://www.soundimports.eu/en/sb-acoustics-mw13tx-4.html
Then you can see how the DXT starts to beam too, around 2kHz, where the response starts to fall off, as the frequency increase.
https://heissmann-acoustics.de/en/test-seas-dxt-27tbcd-g/
Now, when you cross around 2kHz and keep the drivers physically close. Then the DXT will smoothly take over the work from the midrange, and you will end up having a smooth transition which makes it almost impossible to hear that you have two different drivers working together, in the same frequency area - works like a charm in my system
Using a Purifi driver - chosing a crossover respecting its size(size dictates when it starts to beam), should give you an equally great result
FantasticGood point on Heissman's conclusion to optimally run the DXT with a "non existent baffle"
I have heard so many different speakers in my life, at friends, exhibitions and private gatherings. Again and again, good basic workmanship and well backed up theories, seems to create the overall best sounding loudspeakers. So, good speed my man, it can be done, even without costing too much 
I have updated the first post in an effort to stop people having to sift through the pages. If anyone has anything to add, correct me or anything I've missed let me know. Happy listening
That BePure 2 looks like a missed opportunity for the waveguided satori be, would flatten the sound power curve and EIR. Otherwise, beautiful.
That BePure 2 looks like a missed opportunity for the waveguided satori be, would flatten the sound power curve and EIR. Otherwise, beautiful.
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I think XRK’s Purifi/Raal is not on the first post. Not sure where it sits as I don’t think the Raal is readily available for DIY.
https://www.diyaudio.com/community/threads/raal-70-20xr-and-ptt6-5-compact-tl.356906/
There is also some info on a Purify/Bliesma T34B buried somewhere in the XRK Purifi/RS28T thread.
No, I'm certain it was intentional.
Dennis avoid waveguides, as much as he can (IIRC) as he goes for as wide dispersion as possible (if I interpret it correctly).
Erin Hardison took excellent measurements- compare and contrast the top two octaves (5-20Khz) of the globe plots of the
Sointuva (Purifi 6.5TT + waveguided dome)
vs Selah Audio Purezza (Purifi 6.5TT + ribbon tweeter)
https://www.erinsaudiocorner.com/images/Reviews/Loudspeakers/Selah_Audio_Purezza/Selah Audio Purezza_360_Horizontal_Polar.png
vs Philharmonic BMR (Scan 18W/8545 + BMR widebander +ribbon tweeter) https://www.erinsaudiocorner.com/images/Reviews/Loudspeakers/Philharmonic_BMR/Philharmonic BMR_360_Horizontal_Polar.png
I don't think the jury is still out on the wide dispersion vs narrowed dispersion "controlled directivity" thing.
As Erin said, it's "reference vs preference" and really depends on your room.
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Thanks, I missed that one. I do remember reading it. I've added it, as it is a DIY design, but also couldn't see if X fully finished it.
Small monitor from Jones-Scanlon in USA with 6.5" midwoofer
https://www.waynejonesaudio.com/pro...lon-6point5inch-2way-650watt-studio-monitors/
https://www.waynejonesaudio.com/pro...lon-6point5inch-2way-650watt-studio-monitors/
Jones Scanlon is Australian. Though the market here is small.
The American or UK is a larger market - I’d be focusing my attention there as well.
Not sure about Europe. Is there a “reputation” of fine Australian (hi-fi) products?
When I was living in North America; the general feeling I got from the locals was that Australia seemed such a long way away from the rest of the world.
Maybe there was “good coffee and food there in Melbourne” (pronounced ‘burn’, not ‘born’), the capital being Sydney (it’s not), and the outrageous wildfires burning up most of the country (its called bushfires- there’s hardly many tall trees in Australia; being the old driest flattest continent) and the crazy wildlife at every step just waiting to bite and kill you (thank you Steve Irwin, Mick ‘Crocodile’ Dundee)
Maybe audio nerds know that Thiel and Small, Dunlavy and Halcro are Australian, as well as March Audio (sorry Alan, we’ve claimed you now, (like New Zealand born actor Russell Crowe))
The American or UK is a larger market - I’d be focusing my attention there as well.
Not sure about Europe. Is there a “reputation” of fine Australian (hi-fi) products?
When I was living in North America; the general feeling I got from the locals was that Australia seemed such a long way away from the rest of the world.
Maybe there was “good coffee and food there in Melbourne” (pronounced ‘burn’, not ‘born’), the capital being Sydney (it’s not), and the outrageous wildfires burning up most of the country (its called bushfires- there’s hardly many tall trees in Australia; being the old driest flattest continent) and the crazy wildlife at every step just waiting to bite and kill you (thank you Steve Irwin, Mick ‘Crocodile’ Dundee)
Maybe audio nerds know that Thiel and Small, Dunlavy and Halcro are Australian, as well as March Audio (sorry Alan, we’ve claimed you now, (like New Zealand born actor Russell Crowe))
^My bad mistake, sorry Australia. I read this review at SOS first, and they do tell it's Australian!
https://www.soundonsound.com/reviews/jones-scanlon-reds
ps. Yep I know that Alan is British and his wife Finnish born - that's why name "Sointuva" which is Finnish language and translates "musical, harmonious"
https://www.soundonsound.com/reviews/jones-scanlon-reds
ps. Yep I know that Alan is British and his wife Finnish born - that's why name "Sointuva" which is Finnish language and translates "musical, harmonious"
I have a LXmini kit with Minidsp 2x4HD and Hypex 2nos stereo amps. I need more pressure and dont want to add a Sub can I put a Purifi 6.5" woofer in place of the seas woofer. please suggest friends. My room is 15with and 27ft depth. Lxmini is very nice speaker but I need loud volume and pressure that I dont get in 2 way LXmini
datasheet is ready and approved - just waiting for hands freeing to be put online.Carsten made a few improvements since my sneak peek earlier in the thread
we have published an app note about tricks to design passive filters for the new NAA alu driver. Note that certain configurations both EQ the peaks and reduce motor distortion at the same time.
https://purifi-audio.com/tech/
https://purifi-audio.com/tech/
Thank you Lars for finally explaining how a (serial) notch can remove distortion products! I have a question: I've often used a small .2-.3 uF cap in parallel with the first inductor in a woofer circuit to notch the woofer breakup in the 5-10khz area. This should work as well? It's a series notch, so high impedance at that frequency, does it matter that it is the first filter in the circuit? Must it always be the last?