FR 10 WP - 4 Ohm (black)

Art. No. 2130

Saltwater resistant 10 cm (4") full-range driver 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. Black colour.

*) 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
  • Suitable for outdoor applications
  • 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

Technical Data

Rated power
20 W
Maximum power
30 W
Nominal impedance Z
4 Ohm
Frequency response
80–16000 Hz
Mean sound pressure level
85 dB (1 W/1 m)
Opening angle (-6 dB)
76°/4000 Hz
Excursion limit
+/−2 mm
Resonance frequency fs
120 Hz
Magnetic induction
0.85 T
Magnetic flux
260 µWb
Height of front pole-plate
4 mm
Voice coil diameter
20 mm
Height of winding
5 mm
Cutout diameter
101 mm
Net weight
0.275 kg
D.C. resistance Rdc
3.8 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
2.1 l
Effective piston area Sd
50 cm²
Dynamically moved mass Mms
5 g
Force factor Bxl
2.75 Tm
Inductance of the voice coil L
0.3 mH
schwarz / black
4.8 x 0.8 mm (+)2.8 x 0.8 mm (−)
Protective system
IP 66 *)
Temperature range
−40 ... 80 °C
Frequency- and impedance response
Directivity pattern