Earthquake PRO-X158

8Ω

Subwoofer

Nominal diameter	15″ / 380 mm
Resonance	42 Hz
Q factor	0.48
Sensitivity	93.9 dB
Program power	1400 W

Earthquake PRO-X158 Subwoofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 93.9dB

Thiele & Small parameters

Resonance frequency (free air) fS 42Hz
Mechanical quality factor QMS 9.18
Electrical quality factor QES 0.51
Total quality factor QTS 0.48

Large signal parameters

Maximum excursion before damage xlim 9.5mm
Power handling P 700W
Program power Pmax 1400W

Voice Coil

Nominal impedance Z 8Ω
DC resistance RE 6.0Ω
Inductance (1kHz, estimated) LE 3.13mH
VC Diameter 100mm

Magnet

Force factor Bl 19N/A
Motor constant Bl/√RE 7.75N/√W
Diameter 220mm

Diaphragm

Effective diameter 324mm
Effective area SD 826cm²
Moving mass (including air load) MMS 115g
Moving mass MMD 98.1g

Suspensions

Stiffness KMS 8N/mm
Compliance CMS 125µm/N
Equivalent volume to the compliance VAS 121L
Mechanical resistance RMS 3.3N·s/m

Dimensions

Nominal diameter 15″
380mm
Overall diameter 389mm
Baffle cutout diameter 360mm
Mounting depth 146mm
Volume occupied by the driver 7.54L

Earthquake PRO-X158 Impedance

Earthquake PRO-X158 Dimensions

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