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. Typical applications: - Outdoor PA systems - Loudspeaker for solariums and damp locations - Boats, ships and open vehicles Properties: - 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
sketch frequency- and impedance response	Technical Data: 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) 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 Protective system IP 65 Heat resistance −40 ... 80 °C Colour schwarz / black Similar Products F 8 SC 8 OHM FR 8 4 OHM FR 87 4 OHM FR 8 8 OHM FR 8 JS 8 OHM FR 8 WP 4 OHM (white) FR 8 WP 8 OHM (white) FRS 8 4 OHM FRS 8 8 OHM FRS 8 M 8 OHM SC 8 N 8 OHM SL 87 WPM 4 OHM SL 87 WPM 8 OHM
radiation pattern 2000 Hz radiation pattern 5000 Hz radiation pattern 10000 Hz