Skar Audio MA-8 D4

2x4Ω

Subwoofer

8″ / 203 mm

Nominal diameter

65 Hz

Resonance

0.7

Q factor

85 dB

Sensitivity

± 12.5 mm

Linear excursion

800 W

Program Power

Discontinued

Skar Audio MA-8 D4 Subwoofer

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 84.6; dB
Frequency response: 50 - 500; Hz
Resonance frequency (free air)
f_S: 65.0; Hz
Mechanical quality factor
Q_MS: 5.30
Electrical quality factor
Q_ES: 0.82
Total quality factor
Q_TS: 0.70
Maximum linear excursion
x_max: 12.5; mm
Air volume displaced at x_max
V_D: 338; cm³
Power handling
P: 400; W
Program power
P_max: 800; W
Nominal impedance
Z: 2 x 4; Ω
DC resistance (in series)
R_E: 6.8; Ω
Inductance (1kHz, in series, estimated)
L_E: 1.75; mH
VC Diameter: 51; mm
Force factor (in series)
Bl: 20.0; N/A
Motor constant
Bl/√R_E: 7.67; N/√W
Diameter: 160; mm
Effective diameter: 186; mm
Effective area
S_D: 270; cm²
Moving mass
M_MS: 119.9; g
Moving mass (without air load)
M_MD: 117; g
Stiffness
K_MS: 20.0; N/mm
Compliance
C_MS: 50; µm/N
Equivalent volume to the compliance
V_AS: 5.18; L
Mechanical resistance
R_MS: 9.24; N·s/m
Nominal diameter: 8; ″
: 203; mm
Baffle cutout diameter: 188; mm
Mounting depth: 145; mm
Volume occupied by the driver: 2.8; L

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