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SL 70 NDV - 4 Ohm

Art. No. 2274

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 neodymium extremely light and compact.

*) IP protection class for front side when built into a sealed enclosure

Typical applications

  • Narrow network column speakers
  • Model construction
  • Control speaker for electronic devices
  • Electronic musical instruments
*Gross price for private customers. Industrial prices are available on request.
Technical Data
Amplitude & Impedance Frequency
Directivity pattern
Rated power 8 W
Maximum power 15 W
Nominal impedance Z 4 Ohm
Frequency response 150–20000 Hz
Mean sound pressure level 86 dB (1 W/1 m)
Excursion limit +/−3 mm
Resonance frequency fs 220 Hz
Magnetic induction 1.26 T
Magnetic flux 148 µWb
Voice coil diameter 15 mm
Height of winding 3 mm
Cutout diameter 63 mm
Net weight 60 g
D.C. resistance Rdc 3.8 Ohm
Mechanical Q factor Qms 4.9
Electrical Q factor Qes 2.23
Total Q factor Qts 1.53
Equivalent volume Vas 0.43 l
Effective piston area Sd 21.6 cm²
Dynamically moved mass Mms 0.8 g
Force factor Bxl 1.39 Tm
Inductance of the voice coil L 0.1
Connections 3.0 x 0.5 mm (+)/3.0 x 0.5 mm (-)
Protective system IP 65 *)
Temperature range −40 ... 80 °C

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