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Old 2nd February 2020, 02:21 AM   #2851
MITsound is offline MITsound  Canada
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Originally Posted by warrjon View Post
Let us know how it goes.

My speakers with the 12P's magnet mounted with a 400mm wide MDF plywood sandwich even without the felt image superbly. In fact with closed eyes it is impossible to locate the speakers. I found the felt improved detail.
I misjudged the dimensions I was after prior to ordering. My unenclosure will have non resonant Felt sides and a rounded back of 4mm grey felt, but will start with a recycled veneered baffle.
I guess really, it's like a u frame, sort of, with constant aperiodic venting.
Or a folded baffle with air resistance.
Finishing glue up.tonight, then will felt it up tomorrow, temporal tenses notwithstanding.
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Old 2nd February 2020, 02:27 AM   #2852
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Ö it's like a u frame, sort of, with constant aperiodic venting...
I guess you will have to use many 4mm layers to get any significant aperiodic loading, and that th elayers increasingly ethe effect moves lower in frequency.

dave
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Old 2nd February 2020, 02:33 AM   #2853
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Originally Posted by planet10 View Post
I guess you will have to use many 4mm layers to get any significant aperiodic loading, and that th elayers increasingly ethe effect moves lower in frequency.

dave
I can't venture an adequate guess.
I'm almost pleased with the 12P on an open baffle plus subwoofer.
Mostly I'm hoping this will lower the lower limit of the 12P while still avoiding box resonances.
Instead of more layers, which I hadn't thought of, I was considering experimenting with cotton or wool stuffing, if it goes sideways. Figuratively, because it literally will.
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Old 2nd February 2020, 07:13 PM   #2854
MITsound is offline MITsound  Canada
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Quote:
Originally Posted by warrjon View Post
Let us know how it goes.

My speakers with the 12P's magnet mounted with a 400mm wide MDF plywood sandwich even without the felt image superbly. In fact with closed eyes it is impossible to locate the speakers. I found the felt improved detail.
It turned out much better sounding than I expected.
Seems to fall off @70 or 80 Hertz, and still has some of the backless cabinet ambience.

I still prefer the sound of the 12PW drivers in
U-Frames over these, but it's a difficult choice now.
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Old 2nd February 2020, 07:46 PM   #2855
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Quote:
Originally Posted by Leonidas View Post
For those who are interested :

Audio Dandy - How to enjoy High Resolution Audio

have fun

Leon
Very interesting, did you try them?
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Old 3rd February 2020, 10:11 PM   #2856
gior is offline gior  France
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Old 3rd February 2020, 11:32 PM   #2857
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He designed them if Iím not wrong
Sorry for ask to much in a gallery thread, I ask about if you listen some of their material
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Old 3rd February 2020, 11:43 PM   #2858
gior is offline gior  France
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Not myself. But user Leonidas that you quoted and whom you asked your question is the Leon mentioned in the article.
I bet he has definetly heard those speakers :-)
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Old 4th February 2020, 03:17 AM   #2859
MITsound is offline MITsound  Canada
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Default Phasey

Using the uncabinets in my secondary system with an old Polk sub, and a Miller Kreisel LP-1S passive highpass filter.
It's nearly as full in sound as with an actual cabinet, minus box resonances. However.
Something funny peculiar going on with the phase response of that felt lossy uncabinet I haven't encountered before.
For nearly all music, bass is integrated perfectly, but with some Steely Dan and Led Zeppelin songs, (not whole albums) the bass both detaches from the satellites, mutes itself slightly, and is clearly coming from the subwoofer.
Still, it's been an interesting experiment, and aside from those rare anomalies, it's very satisfying sound.
These have displaced my old favourites, Scanspeak Revelator woofers in sealed cabinets plus the tweeters du jour.
Anyone have any theories on what's going on with the bass phase?
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Old 8th February 2020, 09:28 AM   #2860
Leonidas is offline Leonidas  Netherlands
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Quote:
Not myself. But user Leonidas that you quoted and whom you asked your question is the Leon mentioned in the article.
I bet he has definetly heard those speakers :-)
Yes I'm the designer. Leonidas is my audio design name.
Up to now there are only 2 sets to be heard : one at my place and the other set at Lii Audio , in China.

IMHO : the Liionidas OB is the best OB design I ever did.

Leon.
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