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FR 8 WP - 4 Ohm (black)

Art. No. 2148

Saltwater resistant 8 cm (3.3") full-range speaker with moulded plastic cone, plastic basket and grille. Absolutely corrosion-resistant and waterproof due to encased magnet and silicon-coated leads. Clear-cut high-range output.

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

Typical applications

  • Outdoor PA systems
  • Loudspeaker for solariums and damp
  • Boats, ships and open vehicles


  • Seawater proof
  • Functionally at low temperature according to EN 60068-2-1 (-40 °C; 96 h)
  • Up to the standards of the Germanischer Lloyd (requirements for electrical equipment/low temperature)
  • Plastic: ASA (UL 94:HB; UV-/weather-proof)
  • Ball-resistant
*Gross price for private customers. Industrial prices are available on request.
Technical Data
Amplitude & Impedance Frequency
Directivity pattern
Rated power 15 W
Maximum power 25 W
Nominal impedance Z 4 Ohm
Frequency response 100–20000 Hz
Mean sound pressure level 84 dB (1 W/1 m)
Opening angle (-6 dB) 114°/4000 Hz
Excursion limit +/−3 mm
Resonance frequency fs 158 Hz
Magnetic induction 1 T
Magnetic flux 190 µWb
Height of front pole-plate 3 mm
Voice coil diameter 20 mm
Height of winding 4 mm
Cutout diameter 74 mm
Net weight 0.23 kg
D.C. resistance Rdc 4.1 Ohm
Mechanical Q factor Qms 2.62
Electrical Q factor Qes 1.33
Total Q factor Qts 0.88
Equivalent volume Vas 0.4 l
Effective piston area Sd 30 cm²
Dynamically moved mass Mms 2.9 g
Force factor Bxl 2.8 T m
Inductance of the voice coil L 0.3 mH
Colour black
Connections 5.2 x 0.5 mm (+)/2.8 x 0.5 mm (-)
Protective system IP 65 *)
Temperature range −40 ... 80 °C

Used in / Accessories:

Gasket for FR 8 WP

For watertight mounting of- FR 8 WP 4 OHM (black)- FR 8 WP 4 OHM (white)- FR 8 WP 8 OHM (black)- FR 8 WP 8 OHM (white)

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