Focal K2 POWER ES 165 K2E

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89dB
• Frequency response 60 - 22000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 67Hz
• Mechanical quality factor QMS 7.00
• Electrical quality factor QES 0.60
• Total quality factor QTS 0.55

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 62cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 2Ω
• DC resistance RE 1.8Ω
• Inductance (1kHz, estimated) LE 0.22mH
• VC Diameter 32mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 4.2N/A
• Motor constant Bl/√RE 3.13N/√W
• Diameter 95mm
• Height 20mm

Diaphragm

• Effective diameter 128mm
• Effective area SD 129cm²
• Moving mass MMS 13g
• Moving mass (without air load) MMD 11.9g
• Material K2 Sandwich

Suspensions

• Stiffness KMS 2.44N/mm
• Compliance CMS 410µm/N
• Equivalent volume to the compliance VAS 10L
• Mechanical resistance RMS 0.78N·s/m
• Surround material Butyl

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 165mm
• Baffle cutout diameter 142mm
• Mounting depth 79mm
• Volume occupied by the driver (estimated) 0.59L
• Net weight 1.45kg