WF 130 ND - 8 Ohm

Art. No. 9051

13 cm (5“) low-midrange driver with Polypropylen membran, neodymium magnet and rubber surround which is suited well for uses where very low installation depth and low weight is required but good sound cannot be renounced in the bass and midrange tone area. The basket front has an integrated fabric grille, which makes a real grille unnecessary and protects at the same time the usually bare airgap, as well as the voice coil.

Technical Data

Rated power
40 W
Maximum power
60 W
Nominal impedance Z
8 Ohm
Frequency response
fu-10000 Hz
(fu: Lower cut-off frequency depending on cabinet)
Mean sound pressure level
84 dB (1 W/1 m)
Excursion limit
+/−8.1 mm
Resonance frequency fs
46 Hz
Magnetic induction
1.17 T
Magnetic flux
376 µWb
Height of front pole-plate
4 mm
Voice coil diameter
25.6 mm
Height of winding
7.6 mm
Cutout diameter
123 mm
Net weight
0.26 kg
D.C. resistance Rdc
6.7 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
10.6 l
Effective piston area Sd
94 cm²
Dynamically moved mass Mms
11.7 g
Force factor Bxl
5.39 Tm
Inductance of the voice coil L
0.76 mH
Frequency- and impedance response