BlieSMa T25B-6

High‑sensitivity tweeter with 25‑mm beryllium dome.

The Bliesma T25B‑6 uses a 25‑mm beryllium dome with an ultrasonic first breakup mode, providing exceptionally low moving mass and precise high‑frequency reproduction. The lightweight diaphragm ensures fast transient response and high sensitivity.

The fully saturated neodymium motor incorporates a copper sleeve to reduce nonlinear and modulation distortion. The underhung voice coil, wound in two layers from CCAW wire on a titanium former, minimizes thermal compression and maintains stable performance under dynamic load. A large vent channel and 2 mm linear excursion allow clean operation at lower crossover points.

The tweeter features a rear‑mounted magnet system and a flush‑mounted surround, resulting in a smooth frequency response and wide off‑axis dispersion. The aluminium front flange is powder‑coated, and the rear chamber is filled with natural wool damping to suppress internal reflections.

To protect the beryllium diaphragm, the T25B‑6 is equipped with a non‑removable metal grille.

• Nominal impedance [Zn]: 6 Ω
• Recommended frequency range: 2.2…40 kHz
• Sensitivity [2.83 V⁄1m]: 92.5 dB
• Resonance frequency [fs]: 1050 Hz
• Power [P]: 100 W (IEC 268-5)

Note: Tweeters are supplied matched pairwise (±0,5 dB in 2.5…17.5 kHz range), if ordered in pairs.

See also:

Bliesma T25B-6 - information in PDF format (218 Kb)

HiFiCompass - BlieSMa T25A-6, T25B-6, T25D-6, T25S-6

Free delivery worldwide by DHL Express service