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The Bliesma M142A‑6 features a 142 mm AlMg‑alloy dome with variable thickness, designed to achieve a higher and better‑controlled first breakup mode. The combination of a large radiating surface and low moving mass provides high sensitivity and accurate midrange reproduction.

The single‑layer ribbon CCAW (Copper‑clad Aluminum Wire) voice coil is wound on a short titanium former. The 137 mm underhung coil design reduces thermal compression and maintains stable performance under dynamic load. Gold‑plated terminals ensure long‑term connection reliability.

The neodymium ring magnet motor incorporates a copper sleeve to minimize nonlinear and modulation distortion. A large rear opening in the motor structure reduces internal reflections and improves performance in dipole configurations.

The natural silk surround and cotton spider from Dr. Kurt Müller GmbH & Co. contribute to controlled mechanical behavior and high midrange resolution. 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]: 65 Hz
Recommended frequency range: 180…2800 Hz
Total Q factor [Qts]: 0.3
Max linear excursion: 3.7 mm