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The Brax Graphic GL6 MK2 is a pair of 165mm (6.5 inch) high-end mid-woofers rated at 100W RMS, featuring MicroSphere-coated paper cones and a diecast aluminium basket. They are part of the Brax Graphic series and are made in Germany.
Complete the system with the Brax Graphic GL1 MK2 tweeters and Brax Graphic GL3 MK2 midrange speakers.
Key specifications
- Size: 165mm / 6.5" mid-woofer, sold as a pair
- Power handling: 100W RMS / 150W max
- Impedance: 3 ohms
- Frequency response: 40 Hz – 4,000 Hz
- Sensitivity: 88 dB @ 1W/1m (92 dB @ 2.83V/1m)
- Voice coil: 37mm
- Installation diameter: 142mm
- Installation depth: 68.2mm
Brax Graphic GL6 MK2: 6.5" / 165mm high-end woofer
The Brax Graphic series was founded on a single goal: to bring the audio performance of high-end hi-fi components into the car. Every design and engineering decision in the Graphic range is driven by pure, unaltered music reproduction, using the latest technologies and the highest-quality materials — designed and made in Germany.
Features
- Lightweight paper cone with "MicroSphere" coating — ceramic micro hollow spheres embedded in a polymer layer — for optimal impulse response without sound colouration
- Specially shaped rubber surround for long, linear cone excursion
- Polyurethane dust cap to optimise frequency response in the upper midrange
- Rigid diecast aluminium basket
- 24-carat gold-plated screw terminals for minimum contact resistance
- Precisely machined magnet system for high efficiency and excellent magnetic flux linearity
- Large pole-piece ventilation hole to significantly reduce compression effects
- Rugged magnet cover with Brax lettering
MicroSphere – the material for maximum acoustic precision
The patented MicroSphere coating embeds ceramic hollow spheres — just 75 µm in diameter — into a polymer layer applied directly to the cone. This provides precise inner damping without adding diaphragm weight, while increasing cone stiffness for a more dynamic and accurate sound.
Perfection – redefined
The GL6 MK2 features a new dust cap made from particularly soft polyurethane, delivering a more balanced midrange frequency response and maximum tonal neutrality.
Even the smallest detail counts
The diecast aluminium basket provides a stable, resonance-free foundation. The precisely manufactured magnet system, combined with the 37mm, 3-ohm voice coil, delivers ideal Thiele/Small parameters for impulse response and efficiency. The specially shaped rubber surround ensures maximum linear excursion, and 24-carat gold-plated terminals minimise contact resistance. The large magnet ventilation opening reduces compression, and the robust cover with Brax lettering protects the magnet.
Each pair of speakers is unique
Every pair carries its own serial number, registered in a Brax service database. The GL6 MK2 is supplied in a fine wooden box — a finishing touch in keeping with the Brax philosophy of uncompromising quality. Made in Germany.
Explore the full range in Brax Speakers.
Specification
| Power handling | RMS/max 100/150 Watts |
|---|---|
| Impedance | 3Ω |
| DC resistance | 3.0Ω |
| Frequency response | 40Hz-4,000Hz |
| Resonance frequency | 52Hz |
| Mechanical Q factor | 6.00 |
| Electrical Q factor | 0.57 |
| Total Q factor | 0.52 |
| Compliance | 603 μm/N |
| Equivalent air volume | 16.3L |
| Force factor | 5.2 Tm |
| Sensitivity | 92dB @ 2.83V/1m 88dB @ 1W/1m |
| Cone | area 139cm² |
| Moving mass | 15.3g |
| Cone | material Paper cone with “MicroSphere” coating consisting of micro ceramic hollow spheres embedded in a polymer layer |
| Mechanical resistance | 0.84kg/s |
| Voice coil | diameter 37mm |
| Voice coil | winding height 14mm |
| Max. linear excursion | +/- 4.0mm |
| Outer diameter | 166mm/6.5" |
| Installation diameter | 142 mm/5.6" |
| Installation depth | 68.2mm/2.7" |
What's Included
- 2 x High-End Woofer BRAX GRAPHIC GL6 MK2
- 1 x Data sheet
Brax
About the Brax 55064
From our tech experts at CEN
Brax 6.5 inch coaxial speakers, with the tweeter in the centre of the woofer, rated at 100w RMS.
Who it suits
Drivers replacing tired factory speakers who want a clear improvement without complication. Brax is the flagship of the Audiotec Fischer stable, built without much regard for cost.
Our tech experts advise
Sizes, adapter rings and harnesses vary by vehicle, year and trim, so we confirm what your car takes before ordering rather than guessing. Door treatment matters as much as the speaker. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Brax range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Brax
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
More from Brax
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Brax Graphic GL1 MK2 Hi-End 25mm 1 Inch Aluminium Dome Tweeters 100w RMS Pair
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Frequently Asked Questions
Q: Will these speakers fit my car?
A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
Q: What impedance is the GL6 MK2?
A: It is a 3 ohm woofer with a 37mm voice coil and a DC resistance of 3.0 ohms.
Q: How deep are the GL6 MK2 woofers?
A: They need 68.2mm of installation depth and a 142mm mounting hole, with an outer diameter of 166mm. Check your door depth or ask CEN about fitting rings for your vehicle.
Q: Do the GL6 MK2 come with tweeters?
A: No. The box contains two GL6 MK2 woofers and a data sheet. BRAX pairs them with the GRAPHIC GL1 MK2 tweeter and GL3 MK2 midrange.
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