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The Brax Matrix ML165 PRO is a pair of handcrafted 165mm (6.5 inch) high-end woofers rated at 120W RMS, featuring a carbon fleece multilayer cone and copper-capped magnet system. Made in Germany, it is part of the Brax Matrix PRO range and succeeds the Matrix ML6 D.
This listing is for the ML165 PRO 6.5 inch woofer. The Brax Matrix PRO range is also available as the Brax Matrix ML80 PRO 3 inch midrange speaker.
Key specifications
- Size: 165mm / 6.5" woofer, sold as a pair
- Power handling: 120W RMS / 170W max
- Impedance: 4 ohms
- Frequency response: 40 Hz – 4,000 Hz
- Sensitivity: 88 dB @ 1W/1m (91 dB @ 2.83V/1m)
- Cone: carbon fleece multilayer
- Installation diameter: 143mm
- Installation depth: 64mm
Brax Matrix ML165 PRO: handcrafted 165mm / 6.5" high-end woofer
The Brax Matrix ML165 PRO is the next evolution of the Matrix ML6 D — long regarded as a benchmark for natural music reproduction. It combines refined engineering, advanced materials and precise construction to raise midbass performance for listeners who accept no compromise.
Features
- Ultra-lightweight carbon fleece multilayer cone — superior stiffness-to-weight ratio with reduced resonance for precise, dynamic sound
- Copper cap on the pole core — minimises voice coil inductance, linearises high-frequency impedance and enhances transparency
- Hemispherically shaped dust cap — optimises upper midrange response for seamless tonal transitions and detail resolution
- Aerodynamically shaped aluminium die-cast basket — allows ideal voice coil ventilation while minimising airflow noise
- High-strength Nomex spider — meta-aramid fabric construction for long-term shape stability under demanding conditions
- Specially shaped butyl rubber surround — enables maximum linear cone excursion with minimal distortion
- Ultra-precise machined magnet system — delivers symmetrical magnetic flux, impulse accuracy and powerful low-frequency performance
- Vented pole core and spider — improves airflow and reduces compression at high sound pressure levels
- Massive 24-carat gold-plated terminals — maximum conductivity and signal integrity
- Made in Germany — developed and manufactured for reference-level sound quality
Carbon fleece multilayer cone: light, rigid and resonance-free
The carbon fleece multilayer cone was developed in collaboration with specialist Dr. Kurt Müller. Its layered carbon structure combines extreme stiffness with minimal mass, reducing unwanted resonances. A reinforcement collar on the rear at the surround transition increases torsional stiffness and prevents deformation at high excursion levels. The straight cone geometry at the voice coil former optimises power transfer and ensures precise, controlled sound radiation.
Copper cap for maximum linearity
The copper cap on the pole core generates controlled eddy currents that damp magnetic field fluctuations, reduce voice coil inductance, linearise high-frequency impedance and lower distortion. The result is a smoother frequency response, higher efficiency and natural reproduction across the upper frequency range.
Precision and perfect control
The magnet system provides stable, symmetrical magnetic flux for strong impulse fidelity and dynamics across the full frequency range. The aluminium die-cast basket minimises airflow turbulence and maintains thermal stability with minimal compression at high output levels. The rubber surround enables linear cone excursion with minimal distortion, while the Nomex spider maintains consistent centring and long-term mechanical durability. 24-carat gold-plated terminals ensure maximum conductivity and signal integrity.
Elegant design — functional and aesthetic
The ML165 PRO's silk-matte cone surface, matt black powder-coated aluminium basket and golden accent ring around the dust cap give it a distinctive, refined appearance suited to seamless integration into any vehicle interior.
Made in Germany — reference-level sound culture
Like every speaker in the Brax Matrix series, the ML165 PRO is crafted in Germany, assigned an individual serial number registered in the Brax database, and delivered in a tailor-made wooden box. It represents uncompromising craftsmanship and audiophile precision at reference level.
Explore the full range in Brax Speakers.
Specification
| Power handling | RMS/max 120/170 Watts |
|---|---|
| Impedance | 4Ω |
| DC resistance | 3.4Ω |
| Frequency response | 40Hz-4,000Hz |
| Resonance frequency | 48Hz |
| Mechanical Q factor | 6.80 |
| Electrical Q factor | 0.50 |
| Total Q factor | 0.47 |
| Compliance | 560 μm/N |
| Equivalent air volume | 14.6L |
| Force factor | 6.3 Tm |
| Sensitivity | 91dB @ 2.83V/1m 88dB @ 1W/1m |
| Cone | area 137cm² |
| Moving mass | 19.1g |
| Cone | material Carbon fleece multilayer cone |
| Mechanical resistance | 0.87kg/s |
| Voice coil | diameter 37 mm/1.5" |
| Voice coil | winding height 14mm/0.6" |
| Max. linear excursion | +/- 4.0mm |
| Max. mechanical excursion | +/- 8.0mm |
| Outer diameter | 167 mm/6.5" |
| Installation diameter | 143mm/5.6" |
| Installation depth | 64mm/2.5" |
What's Included
- 2 x High-End Woofer BRAX MATRIX ML165 PRO
- 1 x Drill
- 1 x Stainless steel screws
- 1 x Certificate
- 1 x Data sheet
Brax
About the Brax 55068
From our tech experts at CEN
Brax 6.5 inch coaxial speakers, with the tweeter in the centre of the woofer, rated at 120w 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
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 does the ML165 PRO replace?
A: BRAX describes the ML165 PRO as the next evolutionary stage of the MATRIX ML6 D, with a new carbon fleece multilayer cone, copper cap on the pole core and Nomex spider.
Q: How deep are the ML165 PRO woofers?
A: They need 64mm of installation depth and a 143mm mounting hole, with an outer diameter of 167mm.
Q: What's in the box with the ML165 PRO?
A: Two ML165 PRO woofers, a drill, stainless steel screws, a certificate and a data sheet, in a wooden presentation box.
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