Visaton K 28.40 8 Ω
2.8 x 4.0 cm (1.1" x 1.6") miniature speaker with paper cone and rectangular plastic basket. Small dimensions due to neodymium magnet. The excellent interaction between the different components achieves a very linear frequency response. Connection via soldering points on rear side.
| Brand | Visaton |
| Model | K 28.40 8 Ω |
| Kind | |
| Nominal diameter (mm) | |
| Impedance (Ω) | 8 |
| Rated power (W) | 2 |
| Maximum power (W) | 3 |
| Sensitivity (dB, 1 W/1 m) | 79 |
| Frequency response | 230 Hz – 20000 Hz |
| Resonance frequency, fs (Hz) | 450 |
| DC resistance, Re (Ω) | |
| Mechanical Q, Qms | |
| Electrical Q, Qes | |
| Total Q, Qts | |
| Equivalent volume, Vas (l) | |
| Effective piston area, Sd (cm²) | |
| Moving mass, Mms (g) | |
| Force factor, BL (T·m) | |
| Voice coil inductance, Le (mH) | |
| Linear excursion, Xmax (mm) | |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 14 |
| Cutout diameter (mm) | 37 |
| Mounting depth (mm) | |
| Cone material | |
| Magnet material | |
| Weight (kg) | 0.014 |