W 130 X - 2 x 4 Ohm

Art. No. 9059

13 cm (5") woofer with robust polypropylene membrane for very compact subwoofer. Designed for multi-purpose applications due to 2 x 4 ohms double voice-coil, with excellent properties as 8 ohms drivers in series configuration. The enormous membrane displacement for its size as well as the very low resonance frequency allows a considerable sound pressure level, the one does not trust such a small speaker.

Possible connections:

(1) one voice coil not connected

(2) both voice coils in series

(3) both voice coils in parallel

Volume/Principle BR-Channel fb fc/QTC
2,3 l/closed - - 70 Hz/0,71
7,5 l/bass reflex 150 x 10 x 400 (bxhxt) 38 Hz -

Technical Data

Rated power
60 W
Maximum power
90 W
Nominal impedance Z
(1) 4 Ohm(2) 8 Ohm(3) 2 Ohm
Frequency response
fu–6000 Hz
(fu: Lower cut-off frequency depending on cabinet)
.
Mean sound pressure level
 78 dB (1 W/1 m)
Maximum linear displacement
+/−5.8 mm (10 % THD)
Excursion limit
+/−11.5 mm
Resonance frequency fs
40 Hz
Magnetic induction
0.92 T
Magnetic flux
694 µWb
Height of front pole-plate
6 mm
Voice coil diameter
40 mm
Height of winding
12 mm
Cutout diameter
123 mm
Net weight
1.5 kg
D.C. resistance Rdc
(1) 3.8 Ohm(2) 7.9 Ohm(3) 2.0 Ohm
Mechanical Q factor Qms
(1) 4.27(2) 4.39(3) 4.59
Electrical Q factor Qes
(1) 0.86(2) 0.41(3) 0.48
Total Q factor Qts
(1) 0.71(2) 0.37(3) 0.43
Equivalent volume Vas
(1) 5.10 l(2) 5.64 l(3) 5.30 l
Effective piston area Sd
94.2 cm²
Dynamically moved mass Mms
37 g
Force factor Bxl
(1) 6.5 Tm(2) 13.2 Tm(3) 6.19 Tm
Inductance of the voice coil L
(1) 0.77 mH(2) 2.75 mH(3) 0.69 mH
Connections
4.8 x 0.8 mm (+)2.8 x 0.8 mm (−)
Frequency- and impedance response