This speaker has PM4 technology
The new PM4 diaphragm, incorporates a new high tech polymer never used in audio before.
Delivers a stronger joint between the dome and the former of the voice coil and so a better behaviour with high power handling and long periods of working.In the subjective field, which is also a relevant part in the Beyma development process, in our opinion it brings a more natural sound when comparing it with other polyesters
| Brand | BEYMA |
| Throat diameter | 25 mm 1 in |
| Nominal impedance | 8 Ohm |
| Minimum impedance | 5 ohm @ 4kHz |
| Re | 4.3 ohm |
| Power capacity | 70 W AES above 1.2 kHz |
| Program power | 140 W above 1.2 kHz |
| Sensitivity | 109 dB 1 W @ 1 m coupled to horn |
| Frequency range | 700-19000 Hz |
| Recom. crossover frequency | 1.2 kHz or higher (12dB/oct min slope) |
| Voice coil diameter | 44.4 mm 1.75 in |
| Flux density | 1.65 T |
| BL factor | 6.6 N/A |
| Diaphragm material | PM4 |
| External diameter | 100 mm 3.94 in |
| Depth | 62 mm 2.44 in |
| Mounting | Three M5 threaded holes. 120º apart on 57 mm (2.24 in) diameter circle. Two M5 threaded holes. 180º apart on 76.2 mm (3 in) diameter circle. |
| Net weight | 1.3 kg 2.86 lb |
| Total weight | 1.4 kg 3.1 lb |
| Magnet | Ferrite |
| POWER (W AES) | 70 |
| SEN. (dB 2.83V-1m) | 109 |
| COIL DIAM. (in) | 1.75 |
| THROAT DIAM. (in) | 1 |
