ND140-4 5-1/4" Aluminum Cone Midbass Driver 4 Ohm

Data sheet

Impedance

4 Ohm

Driver type

Midwoofer

Sensitivity

88.4 dB @ 2.83V/1m

Frequency range

54 - 8000 Hz

Resonance frequency (fs)

59.2 Hz

DC resistance (Re)

3.7 ohms

Mechanical Q (Qms)

5.35

Electrical Q at Fs (Qes)

0.72

Total Q factor (Qts)

0.63

Speaker diameter

5"

Power handling

80 W

Voice coil inductance (L)

0.79 mH @ 1 kHz

Effective mechanical mass incl air load (mms)

10.1g

Effective piston radiating area (Sd)

86.6 cm²

Force factor (BL)

3.9 Tm

Equivalent volume of compliance (Vas)

7.22 liters

Overall diameter

138 mm

Mounting diameter

120 mm