Audio Database

PT-150
Commentary

Dome type tweeter which adopted beryllium diaphragm.

Newly developed beryllium diaphragm is used for the diaphragm.
Beryllium is a material that is extremely light and highly rigid. By using beryllium in the diaphragm, split vibration is suppressed, and flat characteristics up to 55 kHz, which greatly exceeds the audible band, and excellent transient characteristics are realized.

Model Rating
Type Dome type tweeter
Impedance 8 Ω
Frequency band 2.5 kHz to 55 kHz
Max Input 40W
Rated input 20W
Output sound pressure level 91dB/W/m
Crossover frequency 2.5 kHz or More (at 12dB/oct.)
4 kHz or More (at 6dB/oct.)
Air gap total flux 26,500maxwell
Air gap magnetic flux density 13,300gauss