Skar Audio ZVX-8 D4

2x4Ω

Subwoofer

8″ / 220 mm

Nominal diameter

40 Hz

Resonance

0.72

Q factor

77 dB

Sensitivity

± 14 mm

Linear excursion

1100 W

Program Power

Skar Audio ZVX-8 D4 Subwoofer

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 77.1; dB
Resonance frequency (free air)
f_S: 40.0; Hz
Mechanical quality factor
Q_MS: 7.60
Electrical quality factor
Q_ES: 1.15
Total quality factor
Q_TS: 0.72
Maximum linear excursion
x_max: 14.0; mm
Air volume displaced at x_max
V_D: 263; cm³
Power handling
P: 900; W
Program power
P_max: 1100; W
Nominal impedance
Z: 2 x 4; Ω
DC resistance (in series)
R_E: 13.8; Ω
Inductance (1kHz, in series, estimated)
L_E: 3.85; mH
VC Diameter: 64; mm
Winding material: Copper-clad aluminium
Force factor (in series)
Bl: 20.3; N/A
Motor constant
Bl/√R_E: 5.46; N/√W
Diameter: 159; mm
Effective diameter: 155; mm
Effective area
S_D: 188; cm²
Moving mass
M_MS: 137; g
Moving mass (without air load)
M_MD: 134.9; g
Material: Pressed Paper
Stiffness
K_MS: 3.04; N/mm
Compliance
C_MS: 329; µm/N
Equivalent volume to the compliance
V_AS: 16.5; L
Mechanical resistance
R_MS: 4.53; N·s/m
Surround material: Foam
Nominal diameter: 8; ″
: 220; mm
Overall diameter: 220; mm
Baffle cutout diameter: 191; mm
Overall depth: 195; mm
Flange thickness: 32; mm
Mounting depth: 163; mm
Volume occupied by the driver (estimated): 2.3; L

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