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FR 87 - 4 Ohm

Art. No. 4630

8.7 cm (3.4") fullrange speaker with balanced frequency response and high efficiency. For speech and music reproduction in electronic divices and vehicles.

Typical applications
  • Monitoring speaker for electronic devices
  • Vehicles
  • Electronic musical instruments
Attributes
  • Moisture-resistant membrane
  • Metal basket

WEEE-reg. no.: DE 79837685

Industrial prices are available on request.
Technical Data
Sketch
Amplitude & Impedance Frequency
Directivity pattern
Nennbelastbarkeit 15 W
Musikbelastbarkeit 20 W
Nennimpedanz Z 4 Ohm
Übertragungsbereich (-10 dB) 100–20000 Hz
Mittlerer Schalldruckpegel 85 dB (1 W/1 m)
Abstrahlwinkel (−6 dB) 143°/4000 Hz
Grenzauslenkung +/−2 mm
Resonanzfrequenz fs 137 Hz
Obere Polplattenhöhe 3 mm
Schwingspulendurchmesser 15 mm
Wickelhöhe 4.3 mm
Schallwandöffnung 80 mm
Gewicht netto 0.21 kg
Gleichstromwiderstand Rdc 3.5 Ohm
Mechanischer Q-Faktor Qms 6.4
Elektrischer Q-Faktor Qes 1.56
Gesamt-Q-Faktor Qts 1.25
Äquivalentes Luftnachgiebigkeitsvolumen Vas 1.3 l
Effektive Membranfläche Sd 37 cm²
Dynamische bewegte Masse Mms 2 g
Antriebsfaktor Bxl 2.1 Tm
Schwingspuleninduktivität L 0.2 mH
Anschlüsse 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Temperaturbereich –25 ... 70 °C

Used in / Accessories:

GRILLE FR 87

Protective grille made of black plastics. Can be supplied painted in other colours on request.

- Suitable for: FR 87, SL 87 WPM

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