Brax Graphic GL3 Mk2
Graphic GL3 Mk2
3.15″ / 80 mm High-End Cone Midrange Speaker
Brax speakers are reference-grade components for installations where no compromise is acceptable. Designed and manufactured in Germany by the engineers behind Helix, these represent the absolute pinnacle of automotive speaker engineering. This isn’t a casual upgrade from factory speakers – Brax components demand professional installation, proper amplification, and complete system integration.
It all started with the vision of the passionate music lover and entrepreneur Heinz Fischer to transfer the sound experience of legendary high-end audio components into an automobile environment without making any compromises in terms of design, technology and sound. Following this, our engineers focused on exceptional sound quality and once again pushed the technological limits when they designed our BRAX GRAPHIC speaker series. Outstanding components and unparalleled craftsmanship – solely made in Germany!
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
- Polyurethane dustcap for optimization of the frequency response in the upper midrange area
- Ultra-precise machined, vented neodymium magnet system for highest magnetic flux linearity
- Solid stainless steel ring BRAX MR3 optionally available, which can either be used as mounting ring or grille support ring depending on mounting position
Technical data
| Power handling 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 |
| Sensitivity | SPL | 91 dB @ 2.83V 87 dB @ 1W / 1m |
| 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″ |








