Focal K2 POWER ES 165 KX3E

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.3dB
• Frequency response 45 - 22000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 54Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.53
• Total quality factor QTS 0.48

Large signal parameters

• Maximum linear excursion xmax 5.3mm
• Air volume displaced at xmax VD 68cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz, estimated) LE 0.46mH
• VC Diameter 40mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 5.8N/A
• Motor constant Bl/√RE 3.24N/√W
• Diameter 100mm
• Height 22mm

Diaphragm

• Effective diameter 128mm
• Effective area SD 129cm²
• Moving mass MMS 16.5g
• Moving mass (without air load) MMD 15.4g
• Material K2 Sandwich

Suspensions

• Stiffness KMS 1.89N/mm
• Compliance CMS 530µm/N
• Equivalent volume to the compliance VAS 13L
• Mechanical resistance RMS 1.12N·s/m
• Surround material Butyl

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 165mm
• Baffle cutout diameter 142mm
• Mounting depth 76mm
• Volume occupied by the driver (estimated) 0.71L
• Net weight 1.75kg