4 x 9 cm (1.6" x 3.5") full-range speaker with wooden cone and stable plastic basket. Flat and lightweight design because of neodymium. The cooperation of the separate components leads to a very linear frequency response up to deepest frequencies by way of comparison, so that the loudspeaker can be also used in miniature hi-fi speakers.
Technical Data:
Rated power | 4 W |
Maximum power | 5 W |
Nominal impedance Z | 8 Ohm |
Frequency response | 120–20000 Hz |
Mean sound pressure level | 83 dB (1 W/1 m) |
Excursion limit | +/- 1 mm |
Resonance frequency fs | 220 Hz |
Magnetic induction | 1,15 T |
Magnetic flux | 184 µWb |
Height of front pole-plate | 2 mm |
Voice coil diameter | 25,5 mm |
Height of winding | 2 mm |
Cutout diameter | 36 x 86 mm |
Net weight | 0,054 kg |
D.C. resistance Rdc | 6,9 Ohm |
Mechanical Q factor Qms | 3,06 |
Electrical Q factor Qes | 2,29 |
Total Q factor Qts | 1,31 |
Equivalent volume Vas | 0,43 l |
Effective piston area Sd | 23,5 cm² |
Dynamically moved mass Mms | 0,9 g |
Force factor Bxl | 1,98 Tm |
Inductance of the voice coil L | 0,13 mH |
Protective system | IP 63 *) |
Temperature range | −25 ... +70 °C |