Focal K2 POWER SUB 30 KXE

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.7dB
• Frequency response 25 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 29Hz
• Mechanical quality factor QMS 6.10
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 22.5mm
• Air volume displaced at xmax VD 1130cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.4Ω
• Inductance (1kHz, in series, estimated) LE 4.55mH
• VC Diameter 65mm
• Winding material Copper Clad Aluminium
• Former material Glass fiber

Magnet

• Force factor (in series) Bl 21.3N/A
• Motor constant Bl/√RE 8.42N/√W

Diaphragm

• Effective diameter 253mm
• Effective area SD 502cm²
• Moving mass MMS 183g
• Moving mass (without air load) MMD 175g
• Material K2 Sandwich

Suspensions

• Stiffness KMS 6.67N/mm
• Compliance CMS 150µm/N
• Equivalent volume to the compliance VAS 50L
• Mechanical resistance RMS 5.47N·s/m
• Surround material Butyl

Dimensions

• Nominal diameter 12″
• 318mm
• Overall diameter 318mm
• Baffle cutout diameter 284mm
• Mounting depth 172mm
• Volume occupied by the driver 4L
• Net weight 11.2kg