BRAX GRAPHIC GL2 COMPACT Installer-Package – 50 mm high-end aluminum cone midrange (4 pcs)
With the BRAX GRAPHIC series, Audiotec Fischer pursues founder Heinz Fischer’s vision of bringing the sound experience of legendary high-end audio components into the automobile – without compromises in design, sound and technology, and made solely in Germany.
Like the BRAX GL2, the GL2 COMPACT is something very special: this 50 mm / 2″ cone midrange benefits from years of development of its “big brother” and offers the same BRAX-typical quality in an exceptionally compact form factor with installation dimensions reduced to the smallest possible size. Thanks to its exceptionally wide frequency response it can be used without an additional tweeter, coming close to the ideal of a point source and achieving a new level of spatial music reproduction in the car. The extremely rigid aluminum cone by Dr. Kurt Müller provides a notably natural, dynamic midrange, while the precisely manufactured neodymium magnet system with optimally linear magnetic flux contributes to the exceptionally low distortion.
The impressively small dimensions come from a purist design that deliberately omits the stainless steel ring and grille, making the GL2 COMPACT ideal for integration into 3D-printed parts and for invisible installations adapted to the installation situation and vehicle acoustics. 24-carat gold-plated terminals ensure maximum conductivity, and a rear threaded hole in the magnet system allows discreet, hidden fastening from behind.
Key Features
- Enormously broadband frequency response even off-axis – ideal as a broadband speaker without additional tweeter
- Rigid, lightweight aluminum cone for an outstanding, natural, clear and dynamic midrange
- Installation dimensions reduced to a minimum, e.g. for factory mounting locations in the A-pillar or dashboard
- Including 3D-printed mounting ring for gluing or embedding
- Precisely machined neodymium magnet system for highest magnetic flux linearity
- 24-carat gold-plated terminals for maximum conductivity
- Magnet system with threaded hole for hidden fastening from behind
- Aerodynamically optimized basket
- Made in Germany
- Intended for direct installation, not for retail sale
Technical Data
- Power RMS / max.: 80 / 120 W (highpass > 400 Hz at 24 dB/Oct.)
- Impedance: 4 Ω; DC resistance Re 3.1 Ω
- Frequency response: 400 Hz – 20,000 Hz
- Sensitivity: 87 dB @ 2.83 V / 1 m; 84 dB @ 1 W / 1 m
- Thiele-Small: Fs 165 Hz, Qms 8.90, Qes 0.55, Qts 0.52, Cms 720 µm/N, Vas 0.24 l, BL 2.6 Tm, Mms 1.6 g, Rms 0.13 kg/s
- Cone area Sd 15 cm²; cone material aluminum
- Voice coil: 19 mm (0.75″) diameter, 5 mm (0.2″) winding height; Xmax ±1.0 mm
- Outer diameter 58 mm (2.36″); installation diameter 53 mm (2.1″); installation depth 24.8 mm
Recommended Enclosure & DSP Settings
Sealed enclosure with a minimum of 250 ml net volume, always filled with appropriate damping material.
- 0.25 l (system resonance 200 Hz): crossover 600 Hz, min. filter slope 12 dB/Oct.
- 0.5 l (system resonance 155 Hz): crossover 450 Hz, min. filter slope 12 dB/Oct.
- 0.75 l (system resonance 140 Hz): crossover 300 Hz, min. filter slope 24 dB/Oct.
Installer Package
The BRAX GL2 COMPACT Installer-Package is intended exclusively for direct installation and not for retail sale; it is delivered in industrial packaging. Each speaker comes with a mounting ring that can be used for embedding or gluing. Audiotec Fischer additionally offers a downloadable 3D model of a ring for filling, including a click-in mechanism, for your own print at Printables.com.
Scope of Delivery
- 4 x High-end cone midrange speaker BRAX GRAPHIC GL2 COMPACT
- 4 x Mounting ring
Technical Specifications
| Power RMS / max. | P | 80 / 120 Watts (highpass > 400 Hz at 24 dB/Oct.) |
| Impedance | Z | 4 Ω |
| DC resistance | Re | 3.1 Ω |
| Frequency response | 400 Hz – 20.000 Hz | |
| Resonance frequency | Fs | 165 Hz |
| Mechanical Q factor | Qms | 8.90 |
| Electrical Q factor | Qes | 0.55 |
| Total Q factor | Qts | 0.52 |
| Compliance | Cms | 720 μm/N |
| Equivalent air volume | Vas | 0.24 L |
| Force factor | B*I | 2.6 Tm |
| Sensitivity | SPL |
87 dB @ 2.83V / 1m |
| Cone area | Sd | 15 cm² |
| Moving mass | Mms | 1.6 g |
| Cone material | Aluminum cone | |
| Mechanical resistance | Rms | 0.13 kg/s |
| Voice coil diameter | ø | 19 mm / 0,75″ |
| Voice coil winding height | 5 mm / 0.2″ | |
| Max. linear excursion | Xmax | +/- 1.0 mm |
| Outer diameter | ø | 58 mm / 2.36″ |
| Installation diameter | ø | 53 mm / 2.1″ |
| Installation depth | 24.8 mm / 1.06″ | |
| Recommended enclosure volumes | ||
| Sealed box with minimum 250 ml net volume | ||
| Net volumes | Recommended DSP / amplifier settings | |
| 0.25 liter (System resonance: 200 Hz) | Crossover frequency: 600 Hz Min. filter slope: 12 dB/Oct. |
|
| 0.5 liter (System resonance: 155 Hz) | Crossover frequency: 450 Hz Min. filter slope: 12 dB/Oct. |
|
| 0.75 liter (System resonance: 140 Hz) | Crossover frequency: 300 Hz Min. filter slope: 24 dB/Oct. |
Note: The enclosure should always be filled with appropriate damping material.
Scope of Delivery
4 x High-End cone midrange speaker BRAX GRAPHIC GL2 COMPACT
4 x Mounting ring













