I'm looking for a midrange planar to replace my Coral Beta 10s, which I use in a three way open baffle setup. Midrange and tweeter (Aurum Cantus AMT 2560 / Harwood AM25.2AMT) are powered by a 7W 300B amp, woofer (Acoustic Elegance dipole) by an ancient Krell amp. Crossover points are ~300Hz and 6.5kHz, 12 dB/oct.
I'm looking for a midrange driver of about 95 dB/W/m sensitivity to match the tweeter (and the 300B amp). I just found these on the Radian website:
https://radianaudio.com/products/lm10n-wide-band-planar-ribbon-transducer
https://cdn.shopify.com/s/files/1/0111/0324/0254/files/LM10n-datasheet-v2.pdf?v=1666125534
Has anyone heard these? I was rather impressed by the sensitivity, which for my application looks like a very useable 94dB/W/m. Any dipole alternatives to these planars which can be used between 300 Hz and ~4-6 kHz? I would like to try a planar or a ribbon midrange driver, as I feel that would better match my AMT tweeter.
I'm looking for a midrange driver of about 95 dB/W/m sensitivity to match the tweeter (and the 300B amp). I just found these on the Radian website:
https://radianaudio.com/products/lm10n-wide-band-planar-ribbon-transducer
https://cdn.shopify.com/s/files/1/0111/0324/0254/files/LM10n-datasheet-v2.pdf?v=1666125534
Has anyone heard these? I was rather impressed by the sensitivity, which for my application looks like a very useable 94dB/W/m. Any dipole alternatives to these planars which can be used between 300 Hz and ~4-6 kHz? I would like to try a planar or a ribbon midrange driver, as I feel that would better match my AMT tweeter.
Very interesting. Thanks for posting. I had heard thru the grapevine that this was coming, but had no idea when. There is always the Parts Express version as a less expensive alternative. Likely, slightly less sensitive and possibly more unit to unit variance, but not for sure.
https://www.parts-express.com/GRS-PT5010-8-10-Planar-Mid-Tweeter-8-Ohm-272-130?quantity=1
https://audioxpress.com/news/radian...de-band-planar-ribbon-transducer-at-ces-2023/
No price yet, and it's not at Radian homepage
TLHP price for LM8K is reasonable https://en.toutlehautparleur.com/wi...sducer-radian-lm8k-7-ohm-3-5-x-7-87-inch.html
No price yet, and it's not at Radian homepage
TLHP price for LM8K is reasonable https://en.toutlehautparleur.com/wi...sducer-radian-lm8k-7-ohm-3-5-x-7-87-inch.html
Meanwhile the LM10N can be found on the Radian homepage:
https://radianaudio.com/collections/ribbon/products/lm10n-wide-band-planar-ribbon-transducer
Does anybody have an information about when it will be available?
At the moment it does not yet seem to be listed in the shops, which are selling Radian stuff.
You're right, I have overlooked the obvious 
However, not a cheap solution, especially for me as a European customer.
Just to compare the costs for a pair of LM8K:
A direct purchase at Radian would cost 398$, plus 103$ shipping costs to Germany , plus 20-40% tax and customs fees.
Toutlehautpaleur.com offers them for 329€ for a pair with only 12€ shipping costs to Germany (~313$ overall today).
So, not really an option for me.
Anyway, I'm really curious to see first measurements. It would be interesting if they can outperform their competitors, like BG Neo10 or GRS PT5010.
As far as I remember, the LM8K was not better than the comparable GRS and BG stuff, but the LM10N is announced as a complete new development.
Let's wait and see. Anybody ready to make a 'blind purchase'?
However, not a cheap solution, especially for me as a European customer.
Just to compare the costs for a pair of LM8K:
A direct purchase at Radian would cost 398$, plus 103$ shipping costs to Germany , plus 20-40% tax and customs fees.
Toutlehautpaleur.com offers them for 329€ for a pair with only 12€ shipping costs to Germany (~313$ overall today).
So, not really an option for me.
Anyway, I'm really curious to see first measurements. It would be interesting if they can outperform their competitors, like BG Neo10 or GRS PT5010.
As far as I remember, the LM8K was not better than the comparable GRS and BG stuff, but the LM10N is announced as a complete new development.
Let's wait and see. Anybody ready to make a 'blind purchase'?
Touthautparleur will offer them for €315.11 apiece:
https://www.toutlehautparleur.com/h...an-radian-lm10n-6-8-ohm-125-8-x-254-8-mm.html
https://www.toutlehautparleur.com/h...an-radian-lm10n-6-8-ohm-125-8-x-254-8-mm.html
Yes indeed, I would be very interested in seeing them as well.
My expections are quite high. The development of this drivers took a couple of years, so i would expect a technology improvement to the comparable drivers like BG Neo10 or GRS PT5010.
Let's see, if this is really the case.
Anyone, who volunteers in buying and measuring one?
My expections are quite high. The development of this drivers took a couple of years, so i would expect a technology improvement to the comparable drivers like BG Neo10 or GRS PT5010.
Let's see, if this is really the case.
Anyone, who volunteers in buying and measuring one?
That would explain the use of Teonex diaphragms if he'd been familiar with it from B&G. Otherwise, the similarities are about what you'd expect from any of this sort of driver. Push-pull planars like this have had such visual similarities since the Daniel von Recklinghausen DVR and Fostex isostatic days, pushing five decades on now. Function dictates form.
Hello all, I'm a Radian dealer in So Cal - SpeakerAddict. I have just confirmed with Radian that these are now available. I'm awaiting pricing as they have not provided an updated sheet yet with these added. I will know Monday. PM me if anyone wants some. I can probably get an early adopter deal out to you to get some of these out in the wild. I can also ship internationally.
I have some problems interpreting the frequency graph of the LM10. I'm looking for about 94dB sensitivity from ~600 Hz to 5 kHz. As far as I can see, from the vertical dispersion graph the LM10 seems to be the answer to my needs, but the horizontal dispersion paints a different picture, only touching 95dB at 1 kHz and dipping again between 1 and 2 kHz. How can horizontal and vertical dispersion graphs, both at 0 degrees differ so much? Am I overlooking something?
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Been messing with mine a bit. I'm in the early stages of an ultra nearfield listening chair system. Trying a homemade coaxial configuration using the little Radian LT2. A week after I bought the LT2, the improved 2.2 came out. I'll likely get that, if for no other reason than the cosmetics of them match the LM10n better. Nothing seriously measured or configured as if yet though.
Edit to add link to other thread.
https://www.diyaudio.com/community/...t-in-the-planning-stages.400921/#post-7418107
Edit to add link to other thread.
https://www.diyaudio.com/community/...t-in-the-planning-stages.400921/#post-7418107
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looked through your thread just wanted to ask is the trebble driver definitely needed in your opinion ? I was hoping to use the lm10n as a mid/tweeter I thought the response carried right on up or is it a dispersion issue ?