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Thumbnail Filmstrip of SL 70 NDV - 4 Ohm Images
Visaton Speaker Driver - SL 70 NDV - 4 Ohm Full Range Speaker
Art. No. 2274
Visaton SL70NDV - 4 Ohm Full Range Speaker 6.5cm (2.5")
Characteristics and Sound Properties
6.5 cm (2.5") full-range speaker with balanced frequency response and increased high-range. Especially suitable as built-in speaker for music and speech reproduction and as driver for slim PA column systems. Water-resistant and robust construction due to various plastic materials. Thanks to the neodymium construction it is extremely light and compact.
Technical Specifications
| Rated power | 8 W |
| Maximum power | 15 W |
| Nominal impedance Z | 4 Ohm |
| Frequency response | 150–20000 Hz |
| Mean sound pressure level | 87 dB (1W/1m) |
| Excursion limit | ± 3mm |
| Resonance frequency fs | 220 Hz |
| Magnetic induction | 1.26 T |
| Magnetic flux | 148 uWb |
| Voice coil diameter | 15 mm |
| Height of winding | 3 mm |
| Cutout diameter | 63 mm |
| Net weight | 0.06 kg |
| DC resistance Rdc | 3.6 Ohm |
| Mechanical Q factor Qms | 5.18 |
| Electrical Q factor Qes | 3.6 |
| Total Q factor Qts | 2.12 |
| Equivalent volume Vas | 0.28 litres |
| Effective piston area Sd | 21.6 cm2 |
| Dynamically moved mass Mms | 0.9 grams |
| Force factor Bxl | 1.18 Tm |
| Connections | 3.0 x 0.5 mm (+) 3.0 x 0.5 mm (−) |
| Temperature range | −40 ... +80 °C |
| Protective system | IP 65*) |
Driver Dimensions
Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)
Frequency and Impedance Response
Loudspeaker Frequency and Impedance Response Graph