Yeah gimme a true mid that plays a smoothly 262Hz to 2.1KHz as the Purifi original 6.5", with HD2 below -50dB, and HD3 below 60dB and stellar IMD like the original Purifi, but with improved dispersion (5" for -3dB at 60 degrees) and with a sensitivity of 95+dB/2.83V.
If anyone can do it, Purifi can!😀
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Belated thanks for the information, there's a good chance this will be built, to evaluate vs. the ported box.
Maybe transfer the heat away from the coil. Lower sensitivity do require more power to play loud, so a bit of extra heat might arise.
My semi-educated guess would be because the market asked for it. Lets be frank and admit that in HiFi we can be rather set in our ways and opinions. Some are in the paper camp. Others want nothing but hard materials, metal, ceramic, diamond. And others are material agnostic. And then one has styling, matt concave cone like the paper or shiney dome center 'dust cap' as featured in new aluminum model.
Purifi Audio is in the business to sell stuff, more models casts their net wider.
I have designed identical drivers with paper composite cones and aluminum cones. There is a difference in the sound and in the distortion. Done with an attention to detail an aluminum cone can sound very good. And yes it is heavier than a paper composite. But not that much heavier. Last comparison was a little over .3 db less efficient. The sound difference was noticeable. Both cones came from a very well regarded manufacturer.
I am waiting for the new Midrange driver from Purify,
Will be used with those driver
Viavawe grt145
Purify midrange 8ohm
18 Sound 10NW650
BMS 18N862
will be a combination af passiv and active crossover
mid and tweeter 2,5khz crossover passiv
mid and 10" active about 200hz
18" active about 80hz
about 30 days from now i get the Purify
will return later
best Bjarne
Will be used with those driver
Viavawe grt145
Purify midrange 8ohm
18 Sound 10NW650
BMS 18N862
will be a combination af passiv and active crossover
mid and tweeter 2,5khz crossover passiv
mid and 10" active about 200hz
18" active about 80hz
about 30 days from now i get the Purify
will return later
best Bjarne
How is the price looking for the new Purifi midrange? Circa 3000 DKK?
I am also hoping for a 4 or 5" super high efficiency midrange from them in the future.
yes the price is right. not cheap but i hope they are good
if any have some good idear with crossover FreQuence to the Purifi i will like to hear
i will first try the 200hz and 2,5khz
if any have some good idear with crossover FreQuence to the Purifi i will like to hear
i will first try the 200hz and 2,5khz
"ASR Directiva Open Source Speaker Review.
The idea came about from a hypothesis: if a speaker design had access to Klippel Near-field scanner, would he be able to design a super speaker?"
With Purifi elements.
ASR Directiva Open Source Speaker Review | Audio Science Review (ASR) Forum
The idea came about from a hypothesis: if a speaker design had access to Klippel Near-field scanner, would he be able to design a super speaker?"
With Purifi elements.
ASR Directiva Open Source Speaker Review | Audio Science Review (ASR) Forum
I imagine these would sound great… and cost a bomb
Partly because of the cabinet work
(Iirc Joachim founded Audio Physics)
Joachim Gerhard Collection‘s “Surveyor Master" speakers. I don’t know of/ can’t find any information about them on a website. Only on Facebook …
Log into Facebook
His Choice of tweeters …
I’ve read that the ViaWave ribbon tweeters are excellent. Possibly the best ribbons now available(?)
Thirty years ago I was knocked out by the sound of Apogee dipole ribbon treble. And thought there was a big gap there sound quality was well ahead of the conventional tweeters around then. That I had heard, at least
But with tweeters available in recent years like the best SS, SB, and more recently (sp?) Bliesma - even though ViaWave have improved the almost razor thin vertical dispersion of many ribbons by quite a bit, I think I would still rather stick with one of the better SS, SB etc
Partly because of the cabinet work
(Iirc Joachim founded Audio Physics)
Joachim Gerhard Collection‘s “Surveyor Master" speakers. I don’t know of/ can’t find any information about them on a website. Only on Facebook …
Log into Facebook
His Choice of tweeters …
I’ve read that the ViaWave ribbon tweeters are excellent. Possibly the best ribbons now available(?)
Thirty years ago I was knocked out by the sound of Apogee dipole ribbon treble. And thought there was a big gap there sound quality was well ahead of the conventional tweeters around then. That I had heard, at least
But with tweeters available in recent years like the best SS, SB, and more recently (sp?) Bliesma - even though ViaWave have improved the almost razor thin vertical dispersion of many ribbons by quite a bit, I think I would still rather stick with one of the better SS, SB etc
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I can’t see a label but it looks like that plot of radiation dispersion would be horizontal (?)
If they come up with a passive XO, and one was to fork out for dual purifi PRs, I recon that'd be about the pinnacle of 2 way conventional speaker design. Really good results. Caveat being high power required - theres always the iron law. Shame about mounting the amp and DSP on top of the speaker for the measurements though...
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Dumb question, but I thought that from conversations on here the PR made sub integration a challege, but no mention of that on the ASR thread.
I read the Troels page on his take and intrigued that he is one of the few to take advantage of the higher end of the Purifi preferring to cross over at 2.2kHz. Expensive tweeter, but I do like ribbons for all the wrong reasons.
Another ribbon (not a true ribbon?) tweeter based design that has been around for some time. Also uses a passive radiator. Erin (diyAudio member bikinpunk) has reviewed it in detail, and both the objective measurements and subjective impressions are positive:
Selah Audio Purezza Review | Audio Science Review (ASR) Forum
Selah Audio Purezza Review | Audio Science Review (ASR) Forum