Power RMS / max.

200 / 400 Watts

Impedance 

Z

4 Ω

DC resistance 

Re

3.4 Ω

Resonance frequency 

Fs

45 Hz

Mechanical Q factor 

Qms

12.14

Electrical Q factor 

Qes

0.61

Total Q factor

Qts

0.58

Compliance

Cms

351 µm/N

Equivalent air volume

Vas

24 L

Force factor 

B*I

7.40 Tm

Efficiency 1 W / 1 m

SPL

89 dB

Cone area 

Sd

219 cm²

Moving mass 

Mms

33.9 g

Cone material

Paper cone with “MicroSphere” coating consisting of micro ceramic hollow spheres embedded in a polymer layer

Mechanical resistance 

Rms

0.81 kg/s

Voice coil diameter

ø

37 mm / 1.5"

Voice coil winding height

18 mm / 0.71"

Max. linear excursion 

Xmax

+/- 6 mm

Outer diameter

ø

222 mm / 8.7"

Installation diameter

ø

191 mm / 7.5"

Installation depth

92 mm / 3.6"

Recommended enclosure volumes

Sealed box

Net volume

15 L

Lower limiting frequency (-3dB)

60 Hz

Vented box

 Not recommended

Net volume

- 

Port diameter

ø

- 

Port area

- 

Port length

- 

Port tuning frequency

Fb

- 

Lower limiting frequency (-3dB)

-