Focal K2 POWER EC 165 KE

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.3dB
• Frequency response 60 - 22000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 65Hz
• 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 4.5mm
• Air volume displaced at xmax VD 58cm³
• Power handling P 80W
• Program power Pmax 160W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz, estimated) LE 0.38mH
• VC Diameter 25mm

Magnet

• Force factor Bl 5.3N/A
• Motor constant Bl/√RE 3.06N/√W

Diaphragm

• Effective diameter 128mm
• Effective area SD 129cm²
• Moving mass MMS 13.9g
• Moving mass (without air load) MMD 12.8g
• Material K2 Sandwich

Suspensions

• Stiffness KMS 2.33N/mm
• Compliance CMS 430µm/N
• Equivalent volume to the compliance VAS 10L
• Mechanical resistance RMS 0.81N·s/m
• Surround material Butyl

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 165mm
• Baffle cutout diameter 142mm
• Mounting depth 74mm
• Volume occupied by the driver (estimated) 0.44L
• Net weight 1.1kg