Power RMS / max.

P

100 / 200 Watts

Impedance 

Z

2 x 2 Ω

DC resistance 

Re

2 x 1.6 Ω

Resonance frequency 

Fs

53 Hz

Mechanical Q factor 

Qms

3.30

Electrical Q factor 

Qes

0.41

Total Q factor

Qts

0.37

Compliance

Cms

350  µm/N

Equivalent air volume

Vas

7.9 L

Force factor 

B*I

8 Tm

Efficiency 1 W / 1 m

SPL

87 dB

Cone area 

Sd

125 cm²

Moving mass 

Mms

25 g

Cone material

Hand-scooped paper cone

Mechanical resistance 

Rms

  2.5 kg/s

Voice coil diameter

ø

38.8 mm

Voice coil winding height

16 mm

Max. linear excursion 

Xmax

+/- 5.0 mm

Outer diameter

ø

157.5 mm / 6.20"

Installation diameter

ø

133 mm / 5.24"

Installation depth

79 mm / 3.11"

Recommended enclosure volumes 

For two subwoofers

Sealed box

 Not recommended

Net volume

- 

Lower limiting frequency (-3dB)

- 

Vented box  

Net volume

15 L

Port diameter

ø

70 mm / 2.76"

Port area

38 cm²

Port length

20 cm / 7.87"

Port tuning frequency

Fb

50 Hz

Lower limiting frequency (-3dB)

48 Hz