Focal K2 POWER E 25 KX

Subwoofer

10″ / 269 mm

Nominal diameter

38 Hz

Resonance

0.52

Q factor

84 dB

Sensitivity

± 22.5 mm

Linear excursion

1200 W

Program Power

Focal E 25 KX Subwoofer

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 84.1; dB
Frequency response: 25 - 500; Hz
Resonance frequency (free air)
f_S: 38.0; Hz
Mechanical quality factor
Q_MS: 5.00
Electrical quality factor
Q_ES: 0.58
Total quality factor
Q_TS: 0.52
Maximum linear excursion
x_max: 22.5; mm
Air volume displaced at x_max
V_D: 736; cm³
Power handling
P: 600; W
Program power
P_max: 1200; W
Nominal impedance
Z: 2 x 4; Ω
DC resistance (in series)
R_E: 6.4; Ω
Inductance (1kHz, in series, estimated)
L_E: 1.99; mH
VC Diameter: 65; mm
Winding material: Copper Clad Aluminium
Former material: Glass fiber
Force factor (in series)
Bl: 21.5; N/A
Motor constant
Bl/√R_E: 8.5; N/√W
Diameter: 170; mm
Effective diameter: 204; mm
Effective area
S_D: 327; cm²
Moving mass
M_MS: 163; g
Moving mass (without air load)
M_MD: 158.5; g
Material: Kevlar Sandwich
Stiffness
K_MS: 8.33; N/mm
Compliance
C_MS: 120; µm/N
Equivalent volume to the compliance
V_AS: 20; L
Mechanical resistance
R_MS: 7.78; N·s/m
Surround material: Butyl
Nominal diameter: 10; ″
: 269; mm
Overall diameter: 269; mm
Baffle cutout diameter: 235; mm
Mounting depth: 172; mm
Volume occupied by the driver: 3.0; L
Net weight: 10.6; kg

Focal E 25 KX Dimensions

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