Focal K2 POWER M 6.5 KM

Woofer

Nominal diameter6.5″ / 165 mm
Resonance76 Hz
Q factor0.77
Sensitivity87.9 dB
Program Power240 W
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 87.9dB
  • Frequency response 50 - 5000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 76Hz
  • Mechanical quality factor QMS 10.70
  • Electrical quality factor QES 0.82
  • Total quality factor QTS 0.77

Large signal parameters

  • Power handling P 120W
  • Program power Pmax 240W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.0Ω
  • Inductance (1kHz, estimated) LE 0.39mH
  • VC Diameter 60mm

Magnet

  • Force factor Bl 5N/A
  • Motor constant Bl/√RE 2.89N/√W

Diaphragm

  • Effective diameter 128mm
  • Effective area SD 128cm²
  • Moving mass MMS 14g
  • Moving mass (without air load) MMD 12.9g
  • Material Kevlar Sandwich

Suspensions

  • Stiffness KMS 3.33N/mm
  • Compliance CMS 300µm/N
  • Equivalent volume to the compliance VAS 7L
  • Mechanical resistance RMS 0.62N·s/m
  • Surround material TMD

Dimensions

  • Nominal diameter 6.5
  • 165mm
  • Overall diameter 165mm
  • Baffle cutout diameter 141mm
  • Mounting depth 54mm
  • Volume occupied by the driver (estimated) 0.8L
  • Net weight 1.95kg
Focal 6.5 KM SPL & Impedance
Focal 6.5 KM Dimensions

Similar woofers to Focal 6.5 KM

HELIX Ci3 W165FM-S2 Mid Bass

HELIX Ci3 W165FM-S2

2 Ω
6.5Mid Bass
fS74 Hz
SD133 cm²
60 - 3500 Hz
QTS0.74
xmax3.7 mm
SPL1W88.1 dB
Bl/√RE2.61
Pmax150 W
Hertz C 165 F Woofer

Hertz C 165 F

4 Ω
6.5Woofer
fS80 Hz
SD142 cm²
65 - 5000 Hz
QTS0.80
xmax3.2 mm
SPL1W88.4 dB
Bl/√RE2.37
Pmax180 W
Hertz DCX 130.3 2 Way

Hertz DCX 130.3

4 Ω
52 Way
fS82 Hz
SD98.4 cm²
65 - 21000 Hz
QTS0.76
xmax2 mm
SPL1W88.1 dB
Bl/√RE2.09
Pmax80 W