Air Motion Transformers
are a special type of tweeter systems which have been developed by the German physicist Oskar Heil during his research on the characteristics of the human ear. The main feature is a film-covered cone with a special folding which vibrates like an accordion when an audio signal is applied. This folding allows to accommodate a large cone area at a minimum of space. The AMTs feature a dynamic sound, an excellent transient response, a high efficiency and a low harmonic distortion.
High-end Air Motion Transformer tweeter, 60 W, 8 Ohm
- Tweeter based on the principle of Air Motion Transformer
- High-performance neodymium magnet system
- Fine, dynamic and brilliant reproduction of the high frequencies
- Folded cone made of Kapton and aluminium
- High power capability and high efficiency
- For use from 3,000 Hz on
- Robust aluminium front panel
Klang+Ton 08,09/2016
“AMT of high efficiency for experienced developers.”
Impedance (Z) |
8 Ohm |
Transmission method |
- |
Frequency range |
2,500-30,000 Hz |
Resonant frequency (fs) |
- |
Rec. crossov. frequ. (fmax.) (12 dB/oct.) |
> 3,000 Hz |
Power rating (RMS) |
60 W |
Peak music power output (MAX) |
120 W |
Sensitivity |
98 dB/W/m |
Max. rated SPL |
- |
Max. voltage |
- |
Radiation angle, horizontal |
- |
Radiation angle, vertical |
- |
Suspension compl. (Cms) |
- |
Moving mass (Mms) |
- |
Mech. Q factor (Qms) |
- |
Electr. Q factor (Qes) |
- |
Total Q factor (Qts) |
- |
Equivalent volume (Vas) |
- |
DC resistance (Re) |
5.2 O |
Force factor (BxL) |
- |
Voice coil induct. (Le) |
- |
Voice coil diameter |
- |
Voice coil former |
- |
Linear excursion (XMAX) |
- |
Eff. cone area (Sd) |
- |
Magnet weight |
- |
Magnet diameter |
neodymium rods |
Mounting cutout |
71 x 111 mm |
Mounting depth |
40 mm |
Mounting hole diameter |
- |
Hole spacing X-axis |
76 mm |
Hole spacing Y-axis |
116 mm |
Dimensions |
90 x 130 x 38 mm |
Outside diameter |
not applicable |
Width |
90 mm |
Height |
130 mm |
Depth |
38 mm |
Protective class |
- |
Admiss. ambient temp. |
0-40 °C |
Weight |
0.585 kg |
Packing unit |
1 |
Type of speaker |
AMT |