Power RMS / max.

 P

120 / 170 Watts

Impedance 

Z

4 Ω

DC resistance 

Re

3,6 Ω

Frequency response

40 Hz - 4,000 Hz

Resonance frequency 

Fs

49 Hz

Mechanical Q factor 

Qms

6.75

Electrical Q factor 

Qes

0.58

Total Q factor

Qts

0.54

Compliance

Cms

644 μm/N

Equivalent air volume

Vas

16,8 L

Force factor 

B*I

5.6 Tm

Efficiency 1 W / 1 m

SPL

88.0 dB

Cone area 

Sd

137 cm²

Moving mass 

Mms

16.1 g

Cone material

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

Mechanical resistance 

Rms

0.74 kg/s

Voice coil diameter

ø

37 mm / 1.5"

Voice coil winding height

14 mm / 0.6"

Max. linear excursion 

Xmax

+/- 4.0 mm

Outer diameter

ø

167 mm / 6.5"

Installation diameter

ø

143 mm / 5.6"

Installation depth

64 mm / 2.5"

Recommended enclosure volumes

Sealed box

Net volume

8 L

Lower limiting frequency (-3dB)

68 Hz

Vented box

Net volume

15 L

Port diameter

ø

60 mm / 2.4"

Port area

28 cm²

Port length

19 cm / 7.5"

Port tuning frequency

Fb

45 Hz

Lower limiting frequency (-3dB)

48 Hz