SKU: V-4630-FR87 FR 87 - 4 Ohm

Visaton Speaker Driver - FR 87 - 4 Ohm Full Range
Art. No. 4630

Visaton FR87 - 4 Ohm Full Range

Characteristics and Sound Properties
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:-
- Control speaker for electronic devices
- Vehicles
- Electronic musical instruments

Attributes:-
- Moisturised cone
- Metal basket

Technical Specifications

Rated power	10 W
Maximum power	15 W
Nominal impedance Z	4 Ohm
Frequency response	100-20000 Hz
Mean sound pressure level	85 dB (1W/1m)
Opening angle (-6 dB)	143°/4000 Hz
Excursion limit	±2 mm
Resonance frequency fs	137 Hz
Height of front pole-plate	3 mm
Voice coil diameter	15 mm
Height of winding	4.3 mm
Cutout diameter	80 mm
Net weight	0.21 kg
DC resistance Rdc	3.5 Ohm
Mechanical Q factor Qms	6.4
Electrical Q factor Qes	1.56
Total Q factor Qts	1.25
Equivalent volume Vas	1.3 litres
Effective piston area Sd	37 cm2
Dynamically moved mass Mms	2 grams
Force factor Bxl	2.1 Tm
Inductance of the voice coil L	0.2 mH
Connections	4.8 x 0.8 mm (+) 2.8 x 0.8 mm (−)
Temperature range	−25 ... 70 °C

Driver Dimensions

Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)

Frequency and Impedance Response

Loudspeaker Frequency and Impedance Response Graph

Directivity Pattern

Loudspeaker Directivity Pattern (on and off axis response)