Anyone here heard these speaks? I hear great things about them...

Have not heard them, cannot speak Italian either. But, by looking at the ribbon drivers, I am guessing they have the ability to reproduce voice exceptionally well, rather like the Magnepan 3.7i or 20.7 when combined with a well matched subwoofer.

My experience has been that I prefer to have a nice sub which will get down to about 20 Hz, to provide a floor for the beautiful sound of an electrostat or ribbon speaker. Although, I think in my Totem's, I have found a more conventional speaker which gives the same reproduction of voice, but with real feet on the ground.
 
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Msmoto said:
Have not heard them, cannot speak Italian either. But, by looking at the ribbon drivers, I am guessing they have the ability to reproduce voice exceptionally well, rather like the Magnepan 3.7i or 20.7 when combined with a well matched subwoofer.

My experience has been that I prefer to have a nice sub which will get down to about 20 Hz, to provide a floor for the beautiful sound of an electrostat or ribbon speaker. Although, I think in my Totem's, I have found a more conventional speaker which gives the same reproduction of voice, but with real feet on the ground.
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I would expect a different sound from magnapans , a true 20hz sub ( 3dbdown ) is a beast of a device , most tiny tot sealed subs, eq'ed and driven by small class-D amps to 20hz sounds nothing like a true to form behemoth doing the same ..

Think 500bhp v12 vs 500bhp turbo 4 cyl ... :)
 
So, what do these things cost... the Delta 4r10 specifically?
http://www.giussani-research.it/delta-4-r10/?lang=it

And, for you experts, does anyone know what amplifier is in a Totem Acoustics Thunder II Sub? It only states 300 watt RMS driving a 10" woofer. But at less than $3,000 it cannot have much. It does sound nice to my ears, however.
 
"a true 20hz sub ( 3dbdown ) is a beast of a device , most tiny tot sealed subs, eq'ed and driven by small class-D amps to 20hz sounds nothing like a true to form behemoth doing the same .."

What subs do you like?
 
Msmoto said:
Have not heard them, cannot speak Italian either. But, by looking at the ribbon drivers, I am guessing they have the ability to reproduce voice exceptionally well, rather like the Magnepan 3.7i or 20.7 when combined with a well matched subwoofer.

My experience has been that I prefer to have a nice sub which will get down to about 20 Hz, to provide a floor for the beautiful sound of an electrostat or ribbon speaker. Although, I think in my Totem's, I have found a more conventional speaker which gives the same reproduction of voice, but with real feet on the ground.
Click to expand...

Click on the UK flag (top right) for English!

Eg.

[h=2]Delta 4 R10[/h]
Delta 4 R10

The Delta 4 R10 loudspeakers system have a sensitivity of about 93 dB/2,83 V and a maximum power handling as high as 1.000 W/4 ohm. The transducers number 6 for each speaker. The hight is 65”. As for the other floor standing models of the Delta Series, into which they represent the flagship model, orienting to 30° towards the inside of the listening area can provide a perfect Horizontal NPS field also.
The Delta 4 R10 are 5 electric and 6 acoustic way systems whose two 12” woofers, equivalent to a unique 18” transducer, interface differently with the environment reaching a quite exceptional low frequencies analicity.
The mid-high section, to obtain greater uniformity between the different ways, is made using only isodynamic planar transducers. All the units use neodymium magnets in push-pull configuration, have membranes made with innovative hightech diaphragm material Kaladex [SUP]®[/SUP] and work in a closed loading back-volume to actuate a monopolar emission. In this way, while still offering their unique acoustic tails freedom, they emit in a similar way to the woofers, eliminating the ab origin problem that some hybrid electrostatic systems are suffering, having the woofer acting as a monopolar source and the mid-high section as a dipolar one.
In such systems sometimes it’s possibile to perceive a detachment between woofer and mid-high emission and suddenly the room placement becomes very critical.
With total monopolar radiation the versatility of installation possibilities increase very much, as the Delta systems have already clearly showed in hundreds of different environment conditions.
The sonic personality is very similar to that of a fully electrostatic system, but with the added advantage of being able to offer a very powerful and extended low-end.
As with every vertical GR loudspeakers system the vertical distribution of the height of every transducer with respect to the floor is completely defined as from the initial design. In this way the height of the acoustic scene and the auto-dimensioning effect of every sound source is not left to secondary unwanted design effects as in the majority of proposed line array systems.
One of the most important design targets was to obtain minimal distortion figures together with sound tail freedom coupled to high dynamic ability allowing very high quality Delta sonorization of very large and absorbent environments too. The Delta 4 R10 are floor standing systems whose original characteristics claim to offer a performance well superior to that of similar cost traditional systems (as in closed as reflex ones) even if with a largely higher cost. With a very linear and extended frequency response, the Delta 4 R10 (with their 93 dB of sensitivity and 1.000 watt of input power are capable of a very high dynamic capacity and the large surface of their bass section can reproduce live listening levels down to the lowest frequencies in exceptionallly large enviroments too.
The Delta 4 R10 are equipped with 24 kt gold plated connectors for bi-wiring and bi-amping and the crossover network doesn’t make use of electrolytic capacitors.
 
audio.bill said:
Norman - Please correct me if I'm mistaken, but EMIT (Electro Magnetic Induction Tweeters) are planar magnetic in design.
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Could be, but they look pretty different.


Edit, you are correct...same tech.

EMIT's are not ribbon speakers. They are planar magnetics. Planar magnetic speakers have a voice coil printed on or attached/glued to a diaphragm.

With true ribbons the entire radiating surface is a conductor.

The name EMIT means; electromagnetic induction tweeter.
 
[h=5]LampizatOr added 17 new photos to the album: Singapore 2016 AudioSound High-End Audiophile presentation — at Sheraton Towers Singapore.[/h]August 16 at 5:37pm ·





Today Cheryl and William Whey from AudioSound Singapore hosted local audiophiles reviewers and colleagues in magnificent Sheraton Towers suites. We had Satay, coffee and MUSIC. Yes, William's system was the most musical system of the year. System was powered by FABULOUSLY transparent and neutral amplifiers and preamp from Audionet Germany with the presence of Mr. Robert Hageman. Speakers were my new love - Italian five-ways from Rome - Giussani Research. Sources were different configuarations of Golden Gate DAC and fed with DSD Komputer by Lampizator. We even tried the Lmpizator Anniversary EML45 Globe Mesh tubes. This room sound was 10 out of 10 without hesitation. Now after OTUS lenses - these amps and speakers are next things that I desire but can't afford. Dammit !







 
These speakers are very similar to infinity Emit drivers and correctly both are not ribbons ...

The delta4 R10 differ in having their planer drivers push /pull , meaning magnets on both sides ( front /back) where the EMIT driver is a one side push magnetic field , both have their advantage and disadvantages ..


The Delta R4 drivers look familiar to me , maybe Boehlandr-graber , IMO, the design has advantages in drive and sensitivity ( 90db/w/m specs given) but suffers from internal reflections when compared to pure ribbon drivers , due to their steel cage and grille ..


True Ribbons have their drive magnets to the sides with the front and back being open (dipole)...
 
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