Brax MATRIX ML28 PRO

Brax MATRIX ML28 PRO – 28 mm High-End Silk Dome Tweeter

The ML28 PRO is the newest tweeter in the BRAX MATRIX series, the flagship speaker line of BRAX. It is a 28 mm silk dome design for audiophile car audio systems, delivered as a hand-selected pair and intended for use with a dedicated high-pass in active or high-quality passive setups.

Its 28 mm silk dome is coated on both sides with visco-elastic Acronal for smooth treble reproduction, and a special coating process keeps the dome light for better dynamics and impulse response. The rear coupling volume is damped with merino wool and tuned for a low resonance, while an inward-flanged design, an 8-port ventilated neodymium magnet and an inward-facing stainless steel phase plug work together for clean dispersion and low distortion.

Key Features

• 28 mm silk dome: double-sided visco-elastic Acronal coating for smooth, refined high frequencies.
• Lightweight dome: a special coating process reduces dome mass (Mms 0.32 g) to improve dynamics and impulse response.
• Merino-wool damped coupling volume: tuned for a low resonance frequency (Fs 760 Hz).
• Inward-flanged design: improves sound dispersion and frequency response.
• Machined stainless steel housing: solid construction with an exclusive look and good heat dissipation.
• Neodymium magnet with 8-port ventilation: for linear magnetic flux and low distortion.
• Stainless steel phase plug: faces inward to reduce unwanted reflections inside the coupling volume.
• Standardised mounting diameter: same installation diameter as the BRAX GRAPHIC GL1 MK2 and GL2 (and, per the feature list, the MATRIX ML50 PRO).
• 24-carat gold-plated terminals: for optimum conductivity.
• Two grille designs: two interchangeable grille styles are included; grilles from other BRAX speakers of the same size also fit.
• Hand-matched pairs: each set is selected and paired by acoustic parameters, serial-numbered and registered in a service database.
• Premium packaging: delivered in an exclusive wooden box with certificate.

Drivers & Construction

The driver uses a 28 mm (1.10″) voice coil and a silk dome with visco-elastic Acronal coating on both sides; cone area Sd is 6.2 cm² and moving mass Mms 0.32 g. The dome sits in a solid, machined stainless steel housing with an inward-facing stainless steel phase plug and a merino-wool damped rear chamber. The neodymium magnet has eight ventilation ports, and the terminals are 24-carat gold-plated.

Acoustic Performance

• Power handling: 120 W RMS / 170 W max. (with high-pass above 3,000 Hz, 12 dB/oct.).
• Impedance: 4 Ohms (DC resistance 3.4 Ohms).
• Frequency response: 1,800–25,000 Hz.
• Resonance frequency (Fs): 760 Hz.
• Sensitivity: 93 dB @ 2.83 V / 1 m; 90 dB @ 1 W / 1 m.

Crossover

BRAX recommends the following minimum high-pass frequencies depending on filter slope: 3,500 Hz at 6 dB/octave, above 2,500 Hz at 12 dB/octave, and above 1,800 Hz at 24 dB/octave.

Installation Notes

Outer diameter is 60 mm (2.4″), installation diameter 52 mm (2.1″) and installation depth only 25 mm (1.0″). Mounting rings are supplied, and because the installation diameter matches other BRAX tweeters and midranges, the ML28 PRO can share mounting locations and grilles across the MATRIX and GRAPHIC series.

Technical Specifications

Scope of Delivery

2 x High-End Tweeter BRAX MATRIX ML28 PRO
2 x Mounting ring
4 x Grille
1 x Allen key
1 x Certificate
1 x Data sheet