FRS 7 W - 8 Ohm

Art. No. 2017

6.5 cm (2.5") full-range speaker with balanced frequency response and very good highs. Especially suitable as built-in speaker for music reproduction and as driver for 100 V network column speakers. Very low resonance frequency and maximum cone displacement.

Typical applications
Narrow network column speakers
Monitoring speaker for electronic devices
Model construction
Electronic musical instruments
  • Metal basket
  • 100 °C temperature resistant

Technical Data

Rated power
8 W
Maximum power
15 W
Nominal impedance Z
8 Ohm
Frequency response
120–20000 Hz
Mean sound pressure level
86 dB (1 W/1 m)
Opening angle (-6 dB)
180°/4000 Hz
Excursion limit
+/−2.5 mm
Resonance frequency fs
160 Hz
Magnetic induction
1.1 T
Magnetic flux
120 µWb
Height of front pole-plate
2.5 mm
Voice coil diameter
14 mm
Height of winding
4.5 mm
Cutout diameter
61 mm
Net weight
0.22 kg
D.C. resistance Rdc
6.6 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
0.78 l
Effective piston area Sd
22 cm²
Dynamically moved mass Mms
0.9 g
Force factor Bxl
2.5 Tm
Temperature range
−25 ... 100 °C
Frequency- and impedance response
Directivity pattern