Brax GL 3way  High End Sound Quality speaker set by Audiotec Fischer GL1 GL3 and GL6

It all started with a vision of Heinz Fischer, a passionate music lover and Audiotec's founder, to transfer the sound experience of legendary high-end audio components into a car environment. No compromises in terms of design, technology and sound - following these principles our engineers focussed on exceptional sound quality and expanded the technological limits once again when they designed the new BRAX GRAPHIC speaker series. Outstanding components and unparalleled craftsmanship make the difference - of course solely made in Germany!

The 25 mm / 1" high-end tweeter BRAX GRAPHIC GL1 is the first of its kind that comes with an innovative ceramic aluminium dome. Its sophisticated material requires a complex manufacturing process in which a plasma flame melts a ceramic powder on the surface of an aluminium substrate. The result is a tweeter dome that combines outstanding stability with low moving mass and high inner damping - perfectly made for brilliant and compression-free treble reproduction. The integrated, with Merino wool damped coupling volume reduces the resonance frequency and therefore allows lower crossover frequencies.
The pure and aesthetic design, made from solid stainless steel does not solely look noble but ensures perfect heat dissipation as well. The mounting ring with fine thread warrants a seamless and decent integration into the car's interior whereas the 12 times drilled neodymium magnet is optimized for highest linear magnetic flux. Finally the recessed, 24-carat gold plated terminal reduces contact resistances to almost zero and the rigid grille perfectly protects the sensitive diaphragm. 

Like all BRAX speakers each pair of tweeters has its own serial number, properly recorded in our data base. Needless to say that such valuable products will be delivered in a noble, wooden box emphasizing the approach and the philosophy of the BRAX brand.

Ultra stiff ceramic aluminum hard dome for extremely precise and dynamic treble response
CNC machined stainless steel housing for maximum heat dissipation
Integrated, with merino wool dampened coupling volume for low resonance frequency
Precise machined, 12 x ventilated neodymium magnet for highest magnetic flux linearity
Integrated, 24 carat gold plated terminals for maximum conductivity
Rear mounting ring and fine thread for hidden fastening
Sturdy protection grille is included in delivery

Specifications:

Power RMS / max. P 100 / 150 Watts
(highpass > 3,000 Hz at 12 dB/Oct.)
Impedance Z 4 Ω
DC resistance Re 3.4 Ω
Resonance frequency Fs 900 Hz
Efficiency 1 W / 1 m SPL 90 dB
Voice coil diameter ø 25 mm / 1"
Cone area Sd 4.9 cm²
Moving mass Mms 0.36 g
Cone material Ceramic aluminum hard dome
Outer diameter ø 59 mm / 2.3"
Installation diameter ø 52 mm / 2.0"
Installation depth 24 mm / 0.9"
   
Recommended crossover frequencies for the highpass  
Slope Minimum crossover frequency
6 dB/Octave 4,000 Hz
12 dB/Octave  > 3,000 Hz
24 dB/Octave > 2,000 Hz

Contents:

2 x High-End Tweeter BRAX GRAPHIC GL1
2 x Mounting ring
2 x Grille
1 x Allen key
1 x Data sheet

BRAX GRAPHIC GL6 
It all started with the vision of music lover and company founder Heinz Fischer to be the first to bring exceptional audio experience of legendary high-end hi-fi components into the car. Uncompromising in design, technology and sound. True to these fundamental principles, the focus in the development of our BRAX GRAPHIC loudspeaker series is on pure, unaltered music reproduction, consistently realized by the latest technologies and highest-quality materials – of course designed and made in Germany.

MicroSphere – the material for maximum acoustic precision 
The unique "MicroSphere" coating of the 165 mm / 6.5" high-end GRAPHIC GL6 MK2 mid woofers ensures outstanding sonic performance. With this patented technology, ceramic micro hollow spheres with a diameter of only 75 µm are embedded in a polymer layer and applied to the cone. This special coating guarantees perfect inner damping without negatively affecting the diaphragm weight. Instead, the innovative treatment increases the stiffness of the hand-scooped cone and allows this exceptional speaker to perform even more dynamically and accentuated.

Perfection – redefined
BRAX would not live up to its claim if our striving for perfection did not result in constant improvements to details. The GL6 comes with a new dust cap made of particularly soft polyurethane that ensures an even more balanced frequency response in the midrange and thus maximum tonal neutrality.

Even the smallest detail counts
All components of the GL6 reflect the BRAX philosophy without anyexception. The extremely stable die-cast aluminum basket signals unshakeable solidity, whereas the highly precisely manufactured magnet system in conjunction with the 37 mm, 3 Ohms voice coil not only offers ideal Thiele/Small parameters for the best possible impulse response, but also warrants high efficiency. The specially shaped rubber surround ensures maximum linear diaphragm excursion, 24-carat gold-plated screw terminals minimise contact resistance. Last but not least, the large magnet ventilation opening allows best possible minimisation of compression effects and the robust cover with BRAX lettering provides reliable protection for the magnet.

Each pair of speakers is unique
As is typical for BRAX, each pair of speakers is given its own serial number and recorded in a service database. This high-end product – Made in Germany – is rounded off by the packaging in a fine wooden box, which once again underlines the philosophy of the BRAX brand.

Features
Very stiff lightweight paper cone with unique “MicroSphere” coating consisting of micro ceramic hollow spheres embedded in a polymer layer offers best possible impulse response without any sound colouration
Special shaped rubber surround for long linear cone excursion
Polyurethane dustcap for optimization of the frequency response in the upper midrange area
Extremely rigid aluminum diecast basket
24 carat gold-plated screw terminals for lowest contact resistance
Powerful and precisely machined magnet system for high efficiency in combination with excellent magnetic flux linearity
Large pole-piece ventilation hole significantly reduces compression effects
Rugged magnet cover with BRAX lettering for perfect magnet protection
Technical data
Power handling RMS / max. P 100 / 150 Watts
Impedance Z 3 Ω
DC resistance Re 3.0 Ω
Frequency response 40 Hz - 4,000 Hz
Resonance frequency Fs 52 Hz
Mechanical Q factor Qms 6.00
Electrical Q factor Qes 0.57
Total Q factor Qts 0.52
Compliance Cms 603 μm/N
Equivalent air volume Vas 16.3 L
Force factor B*I 5.2 Tm
Sensitivity SPL 92 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Cone area Sd 139 cm²
Moving mass Mms 15.3 g
Cone material Paper cone with “MicroSphere” coating consisting of micro ceramic hollow spheres embedded in a polymer layer
Mechanical resistance Rms 0.84 kg/s
Voice coil diameter ø 37 mm
Voice coil winding height 14 mm
Max. linear excursion Xmax +/- 4.0 mm
Outer diameter ø 166 mm / 6.5"
Installation diameter ø 142 mm / 5.6"
Installation depth 68.2 mm / 2.7" 
   
Recommended enclosure volumes  
Sealed box  
Net volume 8 L
Lower limiting frequency (-3dB) 69 Hz
   
Vented box  
Net volume 15 L
Port diameter ø 60 mm / 2.4"
Port area 28 cm²
Port length 19 cm / 7.5"
Port tuning frequency Fb 45 Hz
Lower limiting frequency (-3dB) 48 Hz
Scope of delivery
2 x High-End Woofer BRAX GRAPHIC GL6
1 x Data sheet

BRAX GRAPHIC GL3
It all started with a vision of Heinz Fischer, a passionate music lover and Audiotec's founder, to transfer the sound experience of legendary high-end audio components into a car environment. No compromises in terms of design, technology and sound - following these principles our engineers focussed on exceptional sound quality and expanded the technological limits once again when they designed the new BRAX GRAPHIC speaker series. Outstanding components and unparalleled craftsmanship make the difference – of course solely made in Germany!

A perfect team with maximum tonal harmony
The high-end midrange driver GL3 is the next member of the successful BRAX GRAPHIC speaker series and the ideal complement for exceptional three-way constellations in combination with the tweeter GL1 and the mid-woofer GL6. Its lively, dynamic sound characteristics and its particularly wide frequency range make the GL3 ideal for an extraordinary acoustical experience.

MicroSphere – the material for maximum acoustic precision
The centerpiece of this midrange is its particularly light paper cone with a modified "MicroShere" coating. Its extremely precise and detailed reproduction harmonizes perfectly with the other speakers in the GRAPHIC series. This patented technology embeds ceramic micro hollow spheres with a mere diameter of 75 µm in a polyamide layer that is applied to the cone.

State-of-the-art technology
The cone is driven by a particularly linear neodymium magnet system, which is integrated into the aerodynamically sophisticated die-cast aluminium basket. The perfect ventilation of the long-stroke voice coil not only ensures excellent thermal stability, but also prevents compression effects right from the start. The soft rubber surround ensures an extremely low resonance frequency and thus the possibility of a low crossover frequency, ideally in fully active systems.

Details well-thought-out to the end
The love for every single detail manifests the GL3 as a BRAX transducer at reference level, which meets the highest tonal demands of any music lover. Typically for BRAX, each pair of speakers is given its own serial number and recorded in a service database. This high-end product – Made in Germany – is made perfect by the packaging in an elegant wooden box, which once again underlines the uncompromising philosophy of the BRAX brand.

Features
Very stiff lightweight paper cone with unique “MicroSphere” coating consisting of micro ceramic hollow spheres embedded in a polymer layer
Low-reflection rubber surround for smooth high frequency roll-off
Aerodynamically shaped aluminum diecast basket with optimized voice coil ventilation
Coated dustcap for optimization of the frequency response in the upper midrange area
Ultra-precise machined, vented neodymium magnet system for highest magnetic flux linearity
Technical data
Power RMS / max. P 100 / 150 Watts
(highpass > 300 Hz at 24 dB/Oct.)
Impedance Z 3 Ω
DC resistance Re 2.9 Ω
Frequency response 250 Hz - 8.000 Hz
Resonance frequency Fs 80 Hz
Mechanical Q factor Qms 2.90
Electrical Q factor Qes 0.29
Total Q factor Qts 0.26
Compliance Cms 1180 μm/N
Equivalent air volume Vas 1.95 L
Force factor B*I 4.1 Tm
Efficiency 1 W / 1 m SPL 87 dB
Cone area Sd 35 cm²
Moving mass Mms 3.4 g
Cone material Paper cone with “MicroSphere” coating consisting of micro ceramic hollow spheres embedded in a polymer layer
Mechanical resistance Rms 0.62 kg/s
Voice coil diameter ø 25 mm / 1"
Voice coil winding height 6 mm / 0.2"
Max. linear excursion Xmax +/- 1.5 mm
Outer diameter ø 92 mm / 3.6"
Installation diameter ø 76 mm / 3.0"
Installation depth 35.5 mm / 1.4"
   
Recommended enclosure volumes  
Sealed box with minimum 250 ml net volume  
   
Net volumes Recommended DSP / amplifier settings
0.4 liter (System resonance: 200 Hz) Crossover frequency: 350 Hz
Min. filter slope: 12 dB/Oct.
0.8 liter (System resonance: 155 Hz) Crossover frequency: 300 Hz
Min. filter slope: 12 dB/Oct.
1.2 liter (System resonance: 140 Hz) Crossover frequency: 250 Hz
Min. filter slope: 24 dB/Oct.
Note: The enclosure should always be filled with appropriate damping material.

Scope of delivery
2 x High-End Cone Midrange Speaker BRAX GRAPHIC GL3
1 x Allen key
1 x Data sheet