Fi Car Audio SSD NEO 18 D1

2x1Ω

Subwoofer

18″ / 470 mm

Nominal diameter

36 Hz

Resonance

0.53

Q factor

93 dB

Sensitivity

± 28 mm

Linear excursion

3500 W

Program Power

Fi Car Audio SSD NEO 18 D1 Subwoofer

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 92.6; dB
Resonance frequency (free air)
f_S: 35.7; Hz
Mechanical quality factor
Q_MS: 7.73
Electrical quality factor
Q_ES: 0.57
Total quality factor
Q_TS: 0.53
Maximum linear excursion
x_max: 28.0; mm
Air volume displaced at x_max
V_D: 3388; cm³
Power handling
P: 1750; W
Program power
P_max: 3500; W
Nominal impedance
Z: 2 x 1; Ω
DC resistance (in series)
R_E: 1.4; Ω
Inductance (1kHz, in series, estimated)
L_E: 0.64; mH
Force factor (in series)
Bl: 12.99; N/A
Motor constant
Bl/√R_E: 11.0; N/√W
Effective diameter: 393; mm
Effective area
S_D: 1210; cm²
Moving mass
M_MS: 302; g
Moving mass (without air load)
M_MD: 272.2; g
Stiffness
K_MS: 15.87; N/mm
Compliance
C_MS: 63; µm/N
Equivalent volume to the compliance
V_AS: 131; L
Mechanical resistance
R_MS: 8.76; N·s/m
Nominal diameter: 18; ″
: 470; mm
Overall diameter: 470; mm
Baffle cutout diameter: 425; mm
Mounting depth: 241; mm
Volume occupied by the driver: 6.23; L

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