B&G radia series. The RD75 is good for 150 Hz.
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=264-700
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=264-700
I really like big ribbons. The Dali and Analysis speakers I heard had the most realistic transients of all speakers I know. As far as I know the Analysis Amphytrion has a crossover point of 800 Hz. Must have some reason that they don´t go lower.
I don´t add Magneplanar to that list. Are their tweeter elements magnetostats or ribbons?
I don´t add Magneplanar to that list. Are their tweeter elements magnetostats or ribbons?
el`Ol said:
I was expecting you to find this thread
Ditto. That's the biggest advantage. I think is related to this the correctness of harmonics that create the timbre.
I didnt know this particular Dali model. I have Dali dealers in my area, will try to audition one
Dynamics, I guess.
They do with planar the lower part so the losses/benefits is different. I doubt they are efficient. Think of what kind of speed and ultra-low distortion can achieve a 100dB ribbon
Telstar said:
I didnt know this particular Dali model. I have Dali dealers in my area, will try to audition one
The model I heard was the Dali Scyline which is no longer in production. The last big ribbon left in their product range is the Megaline, a €€€ manufactured on demand thing, you need to be lucky to find a dealer who has it standing around.
Hi guys,
this is diyaudio site, so please try not to mix everything up like the avguide folks, who can`t differentiate between cones and domes
Bohlender Graebner Radia RD 75 is a planar magnetic unit (magnetostat), Analysis Amphytrion has a planar magnetic bass and a laminated ribbon for the mid/high range (all their models have a 650 Hz XO) and Rubanoide is...well see below, some kind of bending wave transducer (I heard the 20cm tall unit many years ago, sounded promising, better than any dome/cone combo and I also played with a smaller Radio Shack unit for a while):
http://www.soundimage.dk/Different-col/Bending.htm
http://membrane.com/impact/products/prodairfoil.html
http://membrane.com/impact/products/productsart/airfoilpaper.pdf
http://www.6moons.com/industryfeatures/aero/aero.html
The Apogees of old had some 50 mm wide true ribbons, pure alu or aminated and TA still makes similar ones:
http://www.apogeespeakers.com/ribbonsmenu.htm
http://www.transmissionaudio.com/
All of the above could be made diy - good luck!
Loudspeakers From Abyss
this is diyaudio site, so please try not to mix everything up like the avguide folks, who can`t differentiate between cones and domes
Bohlender Graebner Radia RD 75 is a planar magnetic unit (magnetostat), Analysis Amphytrion has a planar magnetic bass and a laminated ribbon for the mid/high range (all their models have a 650 Hz XO) and Rubanoide is...well see below, some kind of bending wave transducer (I heard the 20cm tall unit many years ago, sounded promising, better than any dome/cone combo and I also played with a smaller Radio Shack unit for a while):
http://www.soundimage.dk/Different-col/Bending.htm
http://membrane.com/impact/products/prodairfoil.html
http://membrane.com/impact/products/productsart/airfoilpaper.pdf
http://www.6moons.com/industryfeatures/aero/aero.html
The Apogees of old had some 50 mm wide true ribbons, pure alu or aminated and TA still makes similar ones:
http://www.apogeespeakers.com/ribbonsmenu.htm
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http://www.transmissionaudio.com/
An externally hosted image should be here but it was not working when we last tested it.
All of the above could be made diy - good luck!
Loudspeakers From Abyss
fivestring said:
Ty for the clarification. I'm willing to include magnetostats if they were efficient. I have no prejudices, so the "ribbon" in the title is a very broad definition, albeit not technically correct.
About your links, all are RIP (some chance to diy possible yeah), except Transmission audio and the Rubanoid/Janus50. I have contacted them and waiting for an answer.
The Rubanoid is very interesting, it mutuates some ideas from the Great Heil (the double magnet). I'm planning to have a listen to it.
The Mangers if they were more efficient (and better sounding, sorry i didnt like them) would fil the bill too.
AkipLab makes this planar magnetic units for Sonus:
The pdf is here:
AkipLab LS 1000
With a simple RCL it could be quite linear beyond 20 kHz
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
The pdf is here:
AkipLab LS 1000
With a simple RCL it could be quite linear beyond 20 kHz
The only true ribbon I know of that can do this at good output is one of Tony Moore's (Ambience) Neo magnet ribbons. I have two to be used in my speaker (see new thread for 130cm Ribbon). They are 96db/2.83v/m 4 ohms. Given that it is 130cm long, the line source behavious makes this a VERY efficient driver.
These ribbons are not commercially available, Tony was nice enough to sell me a set of his best.
I havent been on the forums for ages but I posted a photo of the work I did yesterday. Hopefully I can join some of you in listening to a good system soon!
Regarding the BG75. I have used this to 150Hz in a Monopole (6" x 6" box). Actually has good response to 80Hz (limited output though), so sounds good crossed over at 150Hz. You cannot underestimate the output in a big room though, they almost sounded as loud 4m away as they did with my ear up close, didnt actually need much power. They were alsio very revealing - your could hear the fingers on the strings of guitars and breathing of singers in the mic. few speakers I have listened too have done this and I sure hope my new ones do - they are ALOT harder and MUCH more expensive to build! If you use a big amp (not what is being used here probably I know), you can get on axis response flat to 16.5k, which is better than my 35yr old (15.5k) hearing anyways!
These ribbons are not commercially available, Tony was nice enough to sell me a set of his best.
I havent been on the forums for ages but I posted a photo of the work I did yesterday. Hopefully I can join some of you in listening to a good system soon!
Regarding the BG75. I have used this to 150Hz in a Monopole (6" x 6" box). Actually has good response to 80Hz (limited output though), so sounds good crossed over at 150Hz. You cannot underestimate the output in a big room though, they almost sounded as loud 4m away as they did with my ear up close, didnt actually need much power. They were alsio very revealing - your could hear the fingers on the strings of guitars and breathing of singers in the mic. few speakers I have listened too have done this and I sure hope my new ones do - they are ALOT harder and MUCH more expensive to build! If you use a big amp (not what is being used here probably I know), you can get on axis response flat to 16.5k, which is better than my 35yr old (15.5k) hearing anyways!
Why I asked
Here's my current setup (more or less) w/ RD75's
http://www.diyaudio.com/forums/showthread.php?s=&threadid=95603&highlight=
I'm especially fond of the (measured) 1/R line source behavior which can reduce the efficiency requirements depending on alternate designs... they literally fill the entire house with subjectively equal sound and image with a wide sweet spot...
John L.
Here's my current setup (more or less) w/ RD75's
http://www.diyaudio.com/forums/showthread.php?s=&threadid=95603&highlight=
I'm especially fond of the (measured) 1/R line source behavior which can reduce the efficiency requirements depending on alternate designs... they literally fill the entire house with subjectively equal sound and image with a wide sweet spot...
John L.
I also found the MAD and the Neos used by VMPS (which should be made by the same factory). They are suitable for line arrays (vertical), but also with more elements. Not sure about price.
Have a look here for MAD, this is particularly interesting:
http://www.getmad.com/spkrs_mtm1.html
For home use I think one can use half the rows per side.
I would rather go for a 3x2 vertical array than a single big ribbon. Actually I have fired an email to HPV tech. But I'm sure your pair of Tony's ribbons are cheaper.
Can you tell me which frequency range do they work? On Ambience site they are crossed at 420hz, which is TOO high for my needs.
Not a line array, but a plane array (2x2 min), to improve the vertical dispersion.
I`m not sure if it works that way, otherwise ESLs would have good vertical dispersion and they are typical plane sources, except Janszen, ER and Final Sound which have segmented multi way line arrays.
Plane sources (except NXT panels) beam narrow on short distances, but are probably excellent for PA.
Plane sources (except NXT panels) beam narrow on short distances, but are probably excellent for PA.
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