Ah, yeah that would make a lot of sense.
I have never seen those NRX versions in person.
"natural fibers" can be anything of course.
Which why it made it so confusing, since NOREX is a PVC type.
Hybrids seem to work pretty well, and are of course good for the marketing department 😀 😀
I have never seen those NRX versions in person.
"natural fibers" can be anything of course.
Which why it made it so confusing, since NOREX is a PVC type.
Hybrids seem to work pretty well, and are of course good for the marketing department 😀 😀
Btw - some years ago , drivers were tested by Hobby-Hifi magazine in germany .
5inch and 7inch , SB Acoustics and Wavecor , 4 ohm and 8 ohm versions .
All of them paper cone based , SBA NRX cones of the 1st original type .
Distortion profiles (K2/K3) were all over the place , SBA much more worse .
What I learned from that , never trust a paper cone 🙂
I think also we should measure HD-X on BOTH drivers , not only a single one!
And it would even be a better idea to match a pair of drivers regarding their HD profile!
(should probably improve center image size and stability)
When I order drivers I buy always three for better matching , the third one get butchered to measure the real moving mass so eliminating uncertainties regarding TSP measuring .
Okay let's beat the pro's with intelligence 🙂
happy speakerbuilding
5inch and 7inch , SB Acoustics and Wavecor , 4 ohm and 8 ohm versions .
All of them paper cone based , SBA NRX cones of the 1st original type .
Distortion profiles (K2/K3) were all over the place , SBA much more worse .
What I learned from that , never trust a paper cone 🙂
I think also we should measure HD-X on BOTH drivers , not only a single one!
And it would even be a better idea to match a pair of drivers regarding their HD profile!
(should probably improve center image size and stability)
When I order drivers I buy always three for better matching , the third one get butchered to measure the real moving mass so eliminating uncertainties regarding TSP measuring .
Okay let's beat the pro's with intelligence 🙂
happy speakerbuilding
I thought that too a few years ago. However, Satori WO24P woofers are quite consistent across different tests:
www.audioexcite.com >> SB Acoustics “Satori” WO24P-4
Satori WO24P-8 | HiFiCompass
It really depends on how the code is made. I'm still not completely crazy about paper since it's a hygroscopic material, but hard cones seem to exhibit little variance.
I don't have that experience with paper nor SB Acoustics at all.
And I have seen and tested an awful lot of paper cone drivers myself.
Also don't seem to be at all the issue with other tests.
Hobby Hifi tests sometimes need to take with a little grain of salt (or two).
Standard advice, always cross correlate results from other 3rd party measurements.
If there are consistent issues, you will see it soon enough.
Biggest amount of distortion is from the motor design and suspension anyway, not from the cone material. Except from the cone breakup and an octave below (or higher for the higher order harmonics).
And I have seen and tested an awful lot of paper cone drivers myself.
Also don't seem to be at all the issue with other tests.
Hobby Hifi tests sometimes need to take with a little grain of salt (or two).
Standard advice, always cross correlate results from other 3rd party measurements.
If there are consistent issues, you will see it soon enough.
Biggest amount of distortion is from the motor design and suspension anyway, not from the cone material. Except from the cone breakup and an octave below (or higher for the higher order harmonics).
To give a paper cone an extended FR, they make it flex, so that the center of the cone/dome can move more freely without the rest of the outer area of the cone, which make it play higher frequencies on-axis, but worsens the off-axis response and also creates more anomalies in the pass-band - like more peaks and dips. Alu, seems much more smooth in the useable FR and has its breakup higher up.
I do admit that the 17NRX seems very smooth - but wow - that is one big break-up at 4Khz.
Paper, to me, has always missed that fine detail in sound reproduction, compared to harder materials - especially in the higher frequencies. You get a little more relaxed sound.... some details are "smoothed out". But harder cones tend to reveal more, which requires better fine tuning and EQ. But when done - to me, they play better. Playing with the Dayton RS125 right now... and that is a smooth and clean little midrange, that can still play very loud. Cant imagine a paper driver doing the same thing.
Dayton Audio RS125-4 | HiFiCompass
Mine is the 8ohm - running from 400hz to 2.000hz LR4.
I do admit that the 17NRX seems very smooth - but wow - that is one big break-up at 4Khz.
Paper, to me, has always missed that fine detail in sound reproduction, compared to harder materials - especially in the higher frequencies. You get a little more relaxed sound.... some details are "smoothed out". But harder cones tend to reveal more, which requires better fine tuning and EQ. But when done - to me, they play better. Playing with the Dayton RS125 right now... and that is a smooth and clean little midrange, that can still play very loud. Cant imagine a paper driver doing the same thing.
Dayton Audio RS125-4 | HiFiCompass
Mine is the 8ohm - running from 400hz to 2.000hz LR4.
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By the way, about soft flexing paper cones...🙂
The measurements of the SEAS A26RE4 (H1411) 10" woofer:
Seas A26RE4 (H1411) | HiFiCompass
The measurements of the SEAS A26RE4 (H1411) 10" woofer:
Seas A26RE4 (H1411) | HiFiCompass
By the way, about soft flexing paper cones...
The measurements of the SEAS A26RE4 (H1411) 10" woofer:
$300 a pop in Australia very ordinary performance for the money
The measurements of the SEAS A26RE4 (H1411) 10" woofer:
$300 a pop in Australia very ordinary performance for the money
I have to say thanks very much for this test -potentially would have considered these because of my use of the Seas 10 inch Aluminum/ magnesium ones years ago in active systems -I still have my 2 active XDA dual bass modules which are ok considering there size and go well with most 2 way satellite speakers. I would guess some of the newer Dayton drivers would best these handily for similar money ?
I think you will not be wrong with Dayton Audio woofers. They have very solid performance and excellent price/quality ratio👍
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Joined 2003
That’s unfortunate about the Seas A26, I guess it should be viewed as simply a replacement part for an antique. Used as the bottom end of a 3way is probably ok, but this driver was intended to be used in a 2-way with a large format tweeter.. I’ll stick with my old paper cone Vifa M26WR09-08, one of few speakers where my measurements matched the data sheet exactly.
Vifa M26WR09-08 was a terrific driver for sure I had a system like a Duntech clone using these for bass
Member
Joined 2003
I'm a fan of it for sure 🙂. The closest equivalent I find today is Scanspeak Discovery 26W/8534G, however it is with Aluminum cone and smaller 1.5" voice coil. The old M26 had a 2" coil.
I still have 8 brand new M26WR09-08 woofers sitting around doing nothing.
What a fantastic driver on so many levels. I use 2 of them behind the seat of my old F250 in a 2 cu ft sealed box. Anyone that has listened to them immediately says its the best bass they've ever heard in a mobile system.
Pretty sure the Ariel 10T speakers also used this driver and it got alot of praise. Duntech used this driver for very good reasons, which is how I found out about their existence back when they were still sold.
I even used these woofers in an upright bass combo amp with a sealed cab. Just stunning sound in every way from such a humble looking driver.
What a fantastic driver on so many levels. I use 2 of them behind the seat of my old F250 in a 2 cu ft sealed box. Anyone that has listened to them immediately says its the best bass they've ever heard in a mobile system.
Pretty sure the Ariel 10T speakers also used this driver and it got alot of praise. Duntech used this driver for very good reasons, which is how I found out about their existence back when they were still sold.
I even used these woofers in an upright bass combo amp with a sealed cab. Just stunning sound in every way from such a humble looking driver.
Member
Joined 2003
Member
Joined 2003
Mid is Wavecor WF120BD04, tweeter is Dayton AMT3-4.
The cat is much more interested in our house plants than the speakers, it’s our dogs I have to worry about when they wrestle .
The cat is much more interested in our house plants than the speakers, it’s our dogs I have to worry about when they wrestle .
Member
Joined 2003
