FR 8 JS - 8 Ohm

Art. No. 2000

8 cm (3.3") full-range speaker with waterproof polypropylene cone, good bass reproduction and balanced frequency response. Especially suitable as built-in speaker for music reproduction and as driver for 100 V network column speakers. *) IP protection class for front side when built into a sealed enclosure

Typical applications
Narrow network column speakers
Monitoring speaker
Ceiling- mounted speakers in railway carriages and busses
Electronic musical instruments
  • Polypropylene cone
  • Metal basket

Technical Data

Rated power
10 W
Maximum power
15 W
Nominal impedance Z
8 Ohm
Frequency response
80–20000 Hz
Mean sound pressure level
83 dB (1 W/1 m)
Opening angle (-6 dB)
180°/4000 Hz
Excursion limit
+/−2 mm
Resonance frequency fs
130 Hz
Magnetic induction
1.4 T
Magnetic flux
200 µWb
Height of front pole-plate
3 mm
Voice coil diameter
15 mm
Height of winding
5 mm
Cutout diameter
75 mm
Net weight
0.24 kg
D.C. resistance Rdc
7.2 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
0.84 l
Effective piston area Sd
30 cm²
Dynamically moved mass Mms
2.3 g
Force factor Bxl
2.77 Tm
Inductance of the voice coil L
0.6 mH
4.8 x 0.8 mm (+)2.8 x 0.8 mm (−)
Protective system
IP 64 *)
Temperature range
–25 ... 70 °C
Frequency- and impedance response
Directivity pattern