FRS 8 M - 8 Ohm

Art. No. 2001

8 cm (3.3") HiFi fullrange speaker with high force factor and good sensitivity. Special developed for use in column-speakers and small bass-reflex cabinets, e.g. in miniature subwoofer / satellite systems.

Typical applications
Column speakers
Mini Hi-fi systems
  • Moisturised cone
  • Metal basket

Technical Data

Rated power
30 W
Maximum power
50 W
Nominal impedance Z
8 Ohm
Frequency response
100–20000 Hz
Mean sound pressure level
88 dB (1 W/1 m)
Opening angle (-6 dB)
147°/4000 Hz
Excursion limit
+/−2.5 mm
Resonance frequency fs
125 Hz
Magnetic induction
1.2 T
Magnetic flux
225 µWb
Height of front pole-plate
4 mm
Voice coil diameter
20 mm
Height of winding
4.5 mm
Cutout diameter
75 mm
Net weight
0.5 kg
D.C. resistance Rdc
7.2 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
1.1 l
Effective piston area Sd
29 cm²
Dynamically moved mass Mms
1.8 g
Force factor Bxl
4.0 Tm
Inductance of the voice coil L
0.3 mH
Temperature range
–25 ... 70 °C
Frequency- and impedance response
Directivity pattern