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new Scan 19mm rev tweeter looks v good imo. 500hz fs..
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Look at the off-axis response of the D2104/712000.Comment
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I'm a fan of this one: https://www.scan-speak-store.com/twe...004604010.html
Sent from my SM-G975U using TapatalkSEOS 12/AE TD10M Front Stage in ProgressComment
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Thats a v good value Be dome.
Scans own measured responses often look 'worse' compared to independent tests. Not sure why that is.Comment
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Oooh, Shiny!!! I bet many people are hoping for great things from this!the AudioWorx
Natalie P
M8ta
Modula Neo DCC
Modula MT XE
Modula Xtreme
Isiris
Wavecor Ardent
SMJ
Minerva Monitor
Calliope
Ardent D
In Development...
Isiris Mk II updates- in final test stage!
Obi-Wan
Saint-Saëns Symphonique/AKA SMJ-40
Modula PWB
Calliope CC Supreme
Natalie P Ultra
Natalie P Supreme
Janus BP1 Sub
Resistance is not futile, it is Volts divided by Amperes...
Just ask Mr. Ohm....Comment
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Not being known for my strong impulse control, it should be no surprise that I now have a pair on order...
Meniscus claims to have stock....Pray for them that they actually do after taking my credits...DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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What makes you think I don't have those on order too?
The question, in my mind, for SB Acoustics, is have they successfully integrated the waveguide and SB29Be tweeter. I have the standard version of the SB29 Be Tweeter, and others from them, and find that waveguide integration with hard dome tweeters with wide surrounds may be... shall we say, problematic at best.
So, I am either making a leap of faith or foolishness to order these without seeing data... or you might say, both.
The TB25B6 or TB25A6 may be possible to integrate with a waveguide, but waveguide usage is typically pursued for two way systems, but the optimum operating range of the TB25-6 seems clearly focused on three way systems.
On the other hand, something like this may show considerable promise...
I shall have the answer to that question as soon as I can complete the test assembly...
The reality is that this, or a variant of it, may outperform the new SB waveguide assembly.
This must be verified one way or the other...DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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We shall see what we shall see...
Meniscus will be shipping the pair of TW29BNWG-4 tomorrow.DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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Really surprising that they have stock when even SB doesn't seem to have any info on the driver on their site at all. Very interested in the comparison with the T34A (what waveguide is that on the T34A?) Have you gotten any farther testing the DA25Tx in waveguides? On the PE thread referenced elsewhere someone showed that the Visaton waveguide 'fit' the DA25, but didn't show any measurements allowing evaluating how well it worked.Comment
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Welcome to Rivendell, Mr. Anderson.Comment
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I have plans to evaluate the BlieSMa T34A-4 and possibly the Beryllium version with the Jantzen waveguide. I will compare these to results of the Satori waveguide. Below 24 kHz the A and B BlieSMa parts are quite similar, so I do not expect any significant difference. Ultra sonic notch filters would require different optimizations of course.
There are several possible configurations being considered for complete systems- two examples include NatalieP upgrades (say, a “Redux” and an “Ultra” with the -A version without waveguide for a more compact “Redux” and a version with Waveguide and A or B tweeter for the “Ultra”, using the PuriFi midwoofers. The latter are expected to ship shortly, based on the ordering date.DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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The Helios design from Jeff Bagby...
Welcome to Rivendell, Mr. Anderson.Comment
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Yes, I recall this being discussed in a Jonmarsh thread last year about "vintage" design approaches...
I also believe the Bagby design used a 10" SB Acoustics passive radiator that may no longer readily available, as the SB29RNX-00 has gone missing from vendors carrying it in the past. However, it is still listed on the SB Acoustics web site, and some vendors in Europe claim to have them for sale.
Curiously, I have a pair of the WO24P on hand... it could be "interesting" to see how it might mate with the RSS265PR, which has considerable adjustability.
I do tend to think that going for a 1250 Hz crossover with a waveguide of this typical size might be something of a "stretch goal". I'm also curious as to the origins of the dip at 2kHz; whether that is an interaction with the overall baffle size, or some other factor.
Putting things in context, this is the performance of the original Dayton RS28a in a waveguide developed by Steve Manning and myself...
the performance envelope of a 1.2" tweeter can be significantly extended by the right waveguide, but this waveguide development is not trivial.
And this driver and waveguide combination might be a more prudent choice for the WO24...
Last edited by Evil Twin; 19 February 2020, 15:44 Wednesday.DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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I was just reading that earlier today... That Jon is a bright guy.
The 30W/00 in 40L has some interesting performance characteristics up to 100W with the WO24P-4. The SB29 is allegedly at Madisound, but the design narrative for the Helios and my Unibox models needed some help coming together, and they never fully agreed. The design is for 35L net, but there is substantial bracing that is not considered in the 35L design number (I used 30L as a test case).I also believe the Bagby design used a 10" SB Acoustics passive radiator that may no longer readily available, as the SB29RNX-00 has gone missing from vendors carrying it in the past. However, it is still listed on the SB Acoustics web site, and some vendors in Europe claim to have them for sale.
The RSS265PR seems to match the SB29 at 35L with 425g of mass. Both PR alignments seem to give similar performance as a pair of SW223BD02 woofers in a sealed alignment with twice the power. Box size is larger, but not absurdly so. That does hold the SW223s to their stated Xmax, though, while this alignment for the WO24p is clearly in search of the Xmech limit.Curiously, I have a pair of the WO24P on hand... it could be "interesting" to see how it might mate with the RSS265PR, which has considerable adjustability.
I don't doubt it. The value proposition here would be quite high. Hyperspatial, even.I do tend to think that going for a 1250 Hz crossover with a waveguide of this typical size might be something of a "stretch goal". I'm also curious as to the origins of the dip at 2kHz; whether that is an interaction with the overall baffle size, or some other factor.
[..]
And this driver and waveguide combination might be a more prudent choice for the WO24...
[ATTACH=CONFIG]30004[/ATTACH]Welcome to Rivendell, Mr. Anderson.Comment
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I will check your alignment suggestions soon, as I have a very busy day with imperial business starting almost immediately...
However, being a perfectionist, I would say that the alignments for the WO24P-4 that I have been happiest with all have been around 50-55L with solid extension and performance to 30Hz, and no mid bass hump.
But we shall see what your proposals have to offer...DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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As you are also more aware than I am, the bass alignment with the WO24p is fairly sensitive to the DCR of the series inductors. I started at ~0.7R, and ended up with components at 0.2R to match Jeff's stated Qts of 0.42. Of course, I'm using factory data, and he was using measured data...Welcome to Rivendell, Mr. Anderson.Comment
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While considering value propositions, it might be interesting to make an unreasonable suggestion to keep in mind solutions such as the NSD1095 titanium compression driver combined with the XT1086 elliptical horn/waveguide.
Troels was most impressed, as are others of more humble origins, such as myself...
DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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Sourcing the NSD1095 seems to be a bit of a challenge. I've found a single supplier domestically, and that looks like more of a mom-and-pop operation with an unknown reputation for handling warranty issues. And warranty issues are always a question mark where raw drivers are concerned (hobbyists are guilty until proven innocent...). Kimmo's results for the NSD1095+XT1086 are extraordinary, though, for an approximate $325 combined price point. For a 1.3kHz XO, though, I keep coming back to a "raw" Bliesma T34A or even the suggested Jantzen WG + T34A. Much of this was obviously discussed in the Darth Modula MX thread, so I'm still trying to play mental catch-up. I do like the value proposition of the two mooted Tymphany CDs, though. To my untrained eye, it's hard to discern how much the differences in the VC measurements are due to the drivers and how much the attached waveguides. If one could cross the Wo24p as high as 1.5kHz, then those would probably set the bar for price/performance.
Other things that seem interesting to me:
1) The Satori WG seems to significantly outperform the raw driver measurement in the Helios design. Cross-comparison is obviously difficult to impossible, but there are some "the difference is big enough to be real" aspects to it.
2) The WO24p + PR in ~35L seems to produce similar low-end performance as a pair of SW223BD02s for half the price at half the wattage (the voltage differential is more severe). The 35L volume is a similar form factor to the Dutch + Dutch 8c.
3) A multi-vendor solution similar to what is proposed with the Modula MX should provide a pretty strong value proposition for the same or less outlay than the single-vendor Helios design.
Note that there is a "common man" version of the Helios in process, but the Xmax capabilities of the SB23NBAC will significantly restrict the low-end output.Welcome to Rivendell, Mr. Anderson.Comment
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Punktkilde 6.5" Mg-Li (Magnesium-Lithium) woofer under test.
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ManufacturerComment
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That new fabric dome Bliesma looks to have a pretty good response. Wd need a highish xo tho.Comment
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SATORI TW29TXN-B-4 / TeXtreme Dome Tweeter
Has anyone gotten the Satori TW29TXN-B-4 in hand and tested it yet? I find it to be very interesting.
JimComment
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Regarding that new small dome scan tweeter. Pretty good off axis via Troels measurements. V odd that Scans own never look as goodLast edited by fish fingers; 22 April 2020, 14:14 Wednesday.Comment
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Once in a lifetime pricing on TeXtremes https://www.madisoundspeakerstore.co...-woofer-4-ohm/
Although July not April 1st
Stay safeManufacturerComment
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Meniscus showing 279 USD for the MW16tx. July 7 availability dateComment
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Welcome to Rivendell, Mr. Anderson.Comment
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Still no mention of copper in the the gap. Sigh.What you screamin' for, every five minutes there's a bomb or something. I'm leavin' Bzzzzzzz!
5th Element, otherwise known as Matt.
Now with website. www.5een.co.uk Still under construction.Comment
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I don't care about the one true ring (or even 3 like BMS utilizes).. but I do care about the result! :P
..I'm sure at some point someone will test this.
HifiCompass, are you reading this? ..err, please.
ops:
(..and I still expect problems around the surround resonance.)Comment
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Just checked the tests of four different Excel drivers with the graphene coating in the Klang & Ton magazine. They have very low distortion through the midrange. They use a percentage scale so its hard to see the finer details but at 95 dB the 3rd order is almost hugging the 0% line. Definately a big step up from the older drivers, pity they're so expensive though.Comment
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The impedance bobble and slight dip at 1500Hz are unfortunate, but both are slight, and may not have much impact. Paper cones... and edge resonances.DFAL
Dark Force Acoustic Labs
A wholly owned subsidiary of Palpatine Heavy IndustriesComment
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I'd love to see an NBAC version, but the CAC version is what we get. I'm also still curious about motor reuse. This paper version has 0.1mH less inductance than the 12cm CAC (0.15 vs 0.25mH). The physics of windings are what they are, and maybe I'm hung-up on Le as a driver for harmonic distortion, but I still want the CAC version to have less inductance than the 15cm or 17cm drivers. I'd love for this paper version to be a lot better than the prior one, though.Welcome to Rivendell, Mr. Anderson.Comment
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Here's a new one that's way out of my reach.
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Another SB driver-- seems that we are finally getting an 8" CRC. Can see this being a very popular driver if parameters are well judgedComment
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Nothing up yet, will let you know if I see anything on their IGComment
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It looks like Solen now has both the 4ohm and 8ohm 6" Purifi woofers in stock, and the 4ohm 4" is available for backorder.
Welcome to Rivendell, Mr. Anderson.Comment
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