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FOCAL FRAK / 3KM / 6.5KM

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Price : 144000.- บาท


Product Description

 FRAK_34

 

Made in FranceMade in FranceMade in FranceMade in France UNPRECEDENTED DYNAMICS Made in FranceMade in FranceMade in FranceMade in France

 

1 1/4” (32mm) tweeter

 

A revolution in in-car audio, the FRAK tweeter is a Focal exclusive. With a unique frequency response, it has an ‘M’-profile aluminium/magnesium cone and incorporates patented technologies to give your system unprecedented dynamics. Aluminium makes it possible to obtain a rigid cone for good frequency lowering, while magnesium provides superb damping and, by its lightness, allows the tweeter to perform brilliantly in the extreme treble. The Frak tweeter is a perfect pairing with the other products from the K2 Power M range, delivering pure, hi-fi, in-car sound.

 

With these active K2 Power M products, you can build your own “à la carte” audio system, to create the system you really want. These powerful products are also ultra compact for easy installation into all cabins.

 

KEY POINTS:

 

  • Exclusive 'M'-profile aluminium cone
  • Full-range tweeter
  • Active product
  • Frequency response: 600 Hz – 32 kHz
     

 

 

Made in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in France

3 KM PROFIL
 

Made in FranceMade in FranceMade in FranceMade in France STRIKING REALISM Made in FranceMade in FranceMade in FranceMade in France

 

3 1/8” (80mm) midrange speaker driver

 

Like all the speaker drivers in the K2 Power M range, 3 KM is fitted with Focal's iconic aramid fibre K2 sandwich cone. And for an even bigger performance, Focal's engineers have combined it with their famous ‘M’-profile. This shape of cone offers better frequency response and better sound dispersion, and reduces speaker driver depth. Attributes that go hand-in-hand with the power and dynamics delivered by the K2 cone. Thanks to this 3 inch (80mm) speaker driver, your system delivers faultless musical and pure, high-fidelity sound to provide the ultimate listening pleasure.

 

With these active K2 Power M products, you can build your own “à la carte” audio system, to create the system you really want. These powerful products are also ultra compact for easy installation into all cabins.

 

 

Made in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in FranceMade in France

 

6.5_KM_34

 

Made in FranceMade in FranceMade in FranceMade in France THE K2 SOUND SIGNATURE Made in FranceMade in FranceMade in FranceMade in France

 

6 1/2” (165mm) woofer

 

Like all the speaker drivers in the K2 Power M range, 6.5 KM is fitted with Focal's iconic aramid fibre K2 sandwich cone. And for an even bigger performance, Focal's engineers have combined it with their famous ‘M’-profile. This shape of cone offers better frequency response and better sound dispersion, and reduces speaker driver depth. Attributes that go hand-in-hand with the power and dynamics delivered by the K2 cone. Thanks to this 6 1/2” (165mm) speaker driver, your system delivers faultless music and pure, high-fidelity sound to provide the ultimate in driving and listening pleasure.
 

With these active K2 Power M products, you can build your own “à la carte” audio system, to create the system you really want. These powerful products are also ultra compact for easy installation into all cabins.



 

 

K2 SANDWIcH CONE
6.5_KM_34

The K2 sandwich cone comprises an ultralight foam core, sandwiched between a layer of aramid fibres and a layer of glass fibres. Iconic for its extraordinary performance and recognisable by all for its yellow colour, this cone ensures great purity and precision, all without colouration. It combines 3 key success factors: rigidity / lightness / damping. It offers high quality sound reproduction whatever the style of music.
 



'M'-PROFILE

 

The innovative ‘M’-profile, made from a single piece (with no dust cap), means it is incredibly rigid. The result? An extremely linear frequency response, a low distortion rate and better sound dispersion.

The many advantages of the ‘M’ profile:

  • Highly extended bandwidth, mastery and damping of resonance
  • Reduced harmonic distortion
  • Better sound dispersion due to its geometry and tilt angle
  • Reduced depth of the moving equipment, making the driver lightweight and compact
  • Optimum power handling thanks to the possibility of integrating large voice coils

 

 



 

 

K2 POWER M FRAK

A true revolution in Car Audio, the FRAK tweeter is a Focal exclusive. Unique in terms of its frequency response, it features an Aluminium/Magnesium M-profile cone and incorporates various patented technologies that bring unprecedented dynamics to your installation. It combines perfectly with the other products in the K2 Power M range for pure hi-fi sound, signature of Focal. Available “à la carte”, the K2 Power M products enable you to create the active audio system of your choice for a bespoke installation

 

 

 

 

The perfect harmony between aluminium and magnesium

 

A veritable revolution in Car Audio, FRAK is a tweeter designed by Focal. With an ‘M’-profile, FRAK is a tweeter equipped with a cone that perfectly combines aluminium and magnesium. Aluminium makes it possible to obtain a rigid cone for good frequency lowering, while magnesium provides superb damping and, by its lightness, allows the tweeter to perform brilliantly in the extreme treble.

 

 

 

 


 

 

An incredible frequency response

 

 

This new Focal tweeter has the structure of a loudspeaker: TMD surround, progressive profile spider, etc. This architecture makes it unique for its frequency handling. Wide band, its remarkable versatility allows it to reproduce the highs with perfection and deliver the midrange with clarity. FRAK brings unprecedented dynamics to an in-car audio system, providing a unique sound experience, signed by Focal.

 

 


 

 

TMD - Tuned mass damper



The obsession with the midrange

 

The midrange register is no doubt the most complicated to control in a sound system. On one hand, there must be a smooth transition with the bass. On the other hand, it must be tuned to the tweeter in terms of dispersion and acceleration. This determines the homogeneity of the timbre and spatialisation.

For the past 20 years, we have been working on mastering the "break up" (the frequency at which the cone becomes deformed, leading to distortion) of our 3rd generation "W" cones and on drastically reducing the resonance of the tweeter with the IAL 2. Today, thanks to the power of finite element analysis, our teams have developed simulation software to visualise the dynamic behaviour of the suspension which connects the cone to the basket, thus revealing the performance issues requiring attention.

Tuned mass damper

Following the discovering of these issues, we had to conceive the equipment to solve them. The solutions already known for increasing the damping properties of the suspension all result in an increase of the mass which consequently alters definition. The answer came from a technology used in earthquake-resistant skyscrapers and which is also used for the suspension on racing cars! This technology is called a "Tuned Mass Damper": an additional mass oscillate in opposition to the resonance frequency to control it.

Applied to the speaker driver, the solution consists in simply two tubular rings on the suspension whose dimensions and position have been judiciously determined. They form our Tuned Mass Damper (TMD) and they stabilise the dynamic behaviour of the surround according to resonance, thus avoiding deformation of the cone without afflicting the dynamics. This innovation is patented.





 

Visual analogy of the surrounds

 

 

 

Our Tuned Mass Damper (TMD) consists of two tubular rings moulded onto the surround. On the left the default suspension, on the right, the TMD suspension. This simple solution, perfected thanks to our new software, stabilises the dynamic behaviour of the surround according to resonance, thus avoiding deformation of the cone without afflicting the dynamics.


 

Principle of the Tuned Mass Damper



 

The principle of the tuned harmonic damper (TMD): The graph on the left demonstrates the principle of the tuned mass damper. In red, an m1/k1 system with very pronounced resonance. By adding a mass/spring system m2/k2 (upper section of the diagram), there will be two resonance peaks, as represented by the blue curve. The drop or anti-resonance being previously based on the resonance of the main system, we get the green curve. Finally, by judiciously adding a damper, we obtain the purple curve. The resonance has almost disappeared!

With Sopra hi-fi speakers, we opted for exponentially shaped cones in order to increase frequency response, and consequently impulse response. Another reason for increasing definition.


 


Measurement and analysis


 

Improved response linearity between 1 and 2kHz and the frequency extension provided by the exponential cone profile..
Frequency response of our latest midrange driver (blue trace) compared to the previous-generation W-cone midrange, representing prior state-of-the art performance (red trace). Improvements to the magnetic circuit also contribute (see next section). NB: The dip at 3kHz in the blue trace is due to the tested driver not being fitted with a dust cap.








Effect of the harmonic damper on linearizing the frequency response between 1.5 and 2kHz (blue trace with TMD, red trace without).




Effect of the harmonic damper on nonlinear distortion, which is halved between 1.5 and 2kHz (blue trace with TMD, red trace without).




 



 

 

FRAK_34

Type Tweeter
Woofer 1-1/4″ (32mm)
Depth 3/4″ (19.5mm)
Cone Aluminum, M-shaped
Maximum power 150W
Nominal power 25W RMS
Sensitivity (2.83V/1m).       91dB
Frequency response 600Hz- 32kHz
Impedance 4Ώ
Magnet Neodymium
Voice-coil diameter 1″ (25mm)
Suspension TMD®

3 KM PROFIL

Type Woofer
Woofer 3″ (80mm)
Depth 1-1/8″ (27.3mm)
Cone K2 Sandwich, M-shaped
Maximum power 120W
Nominal power 60W RMS
Sensitivity (2.83V/1m).       89dB
Frequency response 200Hz- 9kHz
Impedance 4Ώ
Magnet Neodymium
Voice-coil diameter 1-3/8″ (35mm)
Suspension TMD®

6.5_KM_34

Type Woofer
Woofer 6-1/2″ (165mm)
Depth 21/8″ (54mm)
Cone K2 Sandwich, M-shaped
Maximum power 240W
Nominal power 120W RMS
Sensitivity (2.83V/1m).      92.5dB
Frequency response 50Hz- 5kHz
Impedance 4Ώ
Magnet Ferrite
Voice-coil diameter 23/8″ (60mm)
Suspension TMD®