The best sounding tweeters in the world

The Lansche Corona tweeter certainly has impressive figures. Looking at the S5 Mk2's frequency response curve as measured by Martin Colloms, the midrange crosses over to the tweeter around 2.4kHz which is about the same as the S5 Mk1, and remains fairly flat to 40kHz indicating excellent driver behavior.

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I listened extensively to a pair of Lansche 5.1s at a show and could not hear any discontinuity between drivers. My favorite music is vocals with acoustic instruments or electric guitars but not played at rock levels. If there had been problems I would have walked away. Instead, I sat mesmerized.
 
Melbguy1 said:
The Lansche Corona tweeter certainly has impressive figures. Looking at the S5 Mk2's frequency response curve as measured by Martin Colloms, the midrange crosses over to the tweeter around 2.4kHz which is about the same as the S5 Mk1, and remains fairly flat to 40kHz indicating excellent driver behavior.

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I would suspect The network is keeping it flat , thats wicked imp/phase angle at 30-60 hz, serious amplfication for bass ...
 
Ventura_Rodriguez_Vallejo said:
Dizzie, hi again.
After reading a. wayne observation, and assuming the frequency range spec is correct (I'm not surprised for the higher point in this type of speaker, but for the lower), I've been thinking about a potential trouble.
I guess 1500 Hz is a problematic frequency in order to match the Lansche Corona with the unit/s covering the lower frequencies all the way down.
I say this 'cause the crossover must work precisely in the region our ears are more sensible (the always present Fletcher-Mundson curves!) and where statistically falls most of musical information.
Is this a limitation for a full-range loudspeaker system which would include the Corona, and what kind of drivers matches better with a so remarkable "tweeter"?

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Do not discount xover overlap or odd order design necessary for coherency ..
 
a.wayne said:
I would suspect The network is keeping it flat , thats wicked imp/phase angle at 30-60 hz, serious amplfication for bass ...
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The S5 Mk2's new graphene/carbon midrange unit & diamond-coated tweeter have higher power handling, lower distortion & lower cutoff frequencies compared to the previous generation, which allowed Magico to remove the crossover’s electrical traps necessary for controlling driver breakup. Thus the driver's improved design and behavior seem to be mostly responsible for the flat response curve.

In his review for Hifi Critic, MC described the S5 Mk2's a "fairly tough loading". The test results show the S5 Mk2's stay slightly above 88db sensitivity across their operating range per 8ohm watt, whilst the impedance dips to 3 ohms resistive @70Hz, and 4 ohms @45Hz with what he described as a "moderately high" 50 degrees phase angle, suggesting a momentary amplifier load of 2.2 ohms in the bass. MC still felt valve amps could drive the speakers from a 4 ohm tap, and good ss amps should have no trouble at all.
 
I became more and more and more intrgued whith the 5.1s behavior, as a whole, when I saw the graph posted by Melbguy1. The imp and phase curves seemed a bit tortured, not in the high freq but in the mid and bass regions. The global impedance is clearly 4 ohms, descending to unquieting figures of 2 and 2,5 in points very demanding of current from the amp. On the other hand, the impedance shown by the Corona tweeter, from some 3ks on, being low (for me, 4 ohms is still a "low" impedance), is almost flat, what are good news (maybe not for all-tube amps). The phase-angle rotation curve is not the very best and bening in the world.
Obviously, the curves show the 5.1 as a bass-refex design (the double peak at 250 and 25 Hz), and as far I don't know if the port fires to the front or the rear, I'm unable to gess how demanding these loudspeakers will be to position them into a normal living room.
Another, and key, thing I don't know is the overall freq response and how well the drivers overlap.
In any case, auditon is always more important than figures and curves, and I haven't had the chance to hear these units in action, so I will take with confidence Dizzie's cinclusions.

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Ventura_Rodriguez_Vallejo said:
I became more and more and more intrgued whith the 5.1s behavior, as a whole, when I saw the graph posted by Melbguy1. The imp and phase curves seemed a bit tortured, not in the high freq but in the mid and bass regions. The global impedance is clearly 4 ohms, descending to unquieting figures of 2 and 2,5 in points very demanding of current from the amp.
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Just to correct you...from MC's Hifi Critic review;

Amplifier loading: 4ohms typical (3ohm min) ‘fairly tough loading'
 
Well, from the very start I understood the graph came from some specialized ("HiFi Critic" in this case) review, and it was very clever from your part to show it in the debate, since an imp/phase curve is very revealing in order to know what the amplifier system is going to deal with.
And I thank you for it.

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Cheers VRV. There is no doubt the Lansche Plasma tweeter is one of the best tweeters in the world. Conceptually a massless tweeter is the perfect solution, though of course it's not that simple. The tweeter is just one driver in an overall loudspeaker design. Then you have the subjective element as you said. That is the art of loudspeaker design.
 
Melbguy1 you would be welcome to pop by any time this week or weekend if you are free. I would love to hear your Magico's as well, considering that the only Magico I have ever heard was the Mini.

You happen to be living in the plasma tweeter capital of Australia. I am aware of at least 3 systems with Lansche plasma tweeters in it, and one with Acapella (i.e. mine) - all in Melbourne. There are zero plasma tweeter systems outside Melbourne, as far as I am aware. I think that mine must be the only DSP controlled plasma tweeter system in the world.
 
Ventura_Rodriguez_Vallejo said:
Wow!
What amazing specs! Those monsters, apart of sounding great, must be really ease to drive.
A delicatessen for amps and ears! [emoji2]

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The specs are indeed phantastic.

Having heard most of the Lansches and several Accapellas I can only confirm the impression, the tweeters are magnificent. You can completely forget any fears of too sharp highs, they sound very delicate indeed.

With the Lansches the problems lie elsewhere, i.e. in the bass and coherent integration of the tweeters and the rest. The Coronas are without comparison the fastest tweeters ever made - nothing to move there, just air and a bit of plasma.


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My measured hearing 'rolls off' at about 14kHz. How much of what these devices produce can most of us hear?

I'm much more interested in the performance between 200Hz and 6kHz. Paying for gear like this is like having a puppy without a leash...

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I don't think it is actually that mechanical. While the amount of musical content is reduced 20 kHz upwards, this is where the airiness in the sound comes from.

That's why e.g. Naim gear, while having good PRAT, tends to sound dull, being rolled off after 20 kHz as Otala suggests.


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anji12305 said:
My measured hearing 'rolls off' at about 14kHz. How much of what these devices produce can most of us hear?

I'm much more interested in the performance between 200Hz and 6kHz. Paying for gear like this is like having a puppy without a leash...

Sent from my Nexus 6 using Tapatalk
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Yours is a more than an interesting (and worrying) observation, indeed.

Enviado desde mi LG-E430 mediante Tapatalk
 
Melbguy1 said:
The S5 Mk2's new graphene/carbon midrange unit & diamond-coated tweeter have higher power handling, lower distortion & lower cutoff frequencies compared to the previous generation, which allowed Magico to remove the crossover’s electrical traps necessary for controlling driver breakup. Thus the driver's improved design and behavior seem to be mostly responsible for the flat response curve.

In his review for Hifi Critic, MC described the S5 Mk2's a "fairly tough loading". The test results show the S5 Mk2's stay slightly above 88db sensitivity across their operating range per 8ohm watt, whilst the impedance dips to 3 ohms resistive @70Hz, and 4 ohms @45Hz with what he described as a "moderately high" 50 degrees phase angle, suggesting a momentary amplifier load of 2.2 ohms in the bass. MC still felt valve amps could drive the speakers from a 4 ohm tap, and good ss amps should have no trouble at all.
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You can't absolutely tell unless we see the raw driver plot, from experience i would wager its from the inline resistor in the xover , as we can see from the phase plot, a lift "tank" so to speak ...
 
I would also like to make a point about mass/energy/Sound.

Sounding good and sweet , is not the same as sounding real. " real " instruments have percussive energy, the way cymbals, triangles , et al , creates energy at high frequencies is very difficult to achieve with loudspeakers , even more so with single point source speakers. This "energy" requires mass , not necessarily less of , and mass requires force ( size) to excite the diaphragm with enough force for weight and speed, multiple drivers or linesources have an advantage when doing "real" ...




Getting "real" is what loudspeakers have always really suffered from.... Many nice sounding speakers around ..


Regards
 
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