The Bliesma M142T‑6 employs a large 142‑mm TeXtreme® carbon‑fiber composite dome, chosen for its exceptionally high stiffness‑to‑weight ratio. This ultra‑light diaphragm enables a higher and better‑controlled first breakup mode, contributing to accurate midrange reproduction with minimal coloration.

The driver uses a single‑layer ribbon CCAW (Copper‑clad Aluminum Wire) voice coil wound on a short titanium former. The 137‑mm diameter underhung coil design provides low thermal compression and maintains stable performance under dynamic load. Gold‑plated terminals ensure reliable long‑term electrical contact.

The neodymium ring magnet motor incorporates a copper sleeve to reduce nonlinear and modulation distortion. A large rear opening in the motor structure minimizes internal reflections and improves dipole operation, making the M142T‑6 suitable for both conventional and open‑baffle loudspeaker designs.

The natural silk surround and cotton spider, manufactured by Dr. Kurt Müller GmbH & Co., contribute to high midrange resolution and controlled mechanical behavior. The thick aluminium basket is powder‑coated, and the surround is recessed into the basket rim, allowing a reduced mounting diameter without compromising diaphragm size.

Nominal impedance [Zn]: 6 Ω
Sensitivity [2.83 V⁄1m]: 94.5 dB
Resonance frequency [Fs]: 66 Hz
Recommended frequency range: 180…2800 Hz
Total Q factor [Qts]: 0.3
Max linear excursion: 3.7 mm