Eighteen Sound 18iD200

Name: 18iD200
Brand: Eighteen Sound

Subwoofer

18″ / 462 mm

Nominal diameter

29 Hz

Resonance

0.17

Q factor

94 dB

Sensitivity

± 18 mm

Linear excursion

3600 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 94.4; dB
Frequency response: 29 - 1000; Hz
Resonance frequency (free air)
f_S: 29.0; Hz
Mechanical quality factor
Q_MS: 7.00
Electrical quality factor
Q_ES: 0.18
Total quality factor
Q_TS: 0.17
Maximum linear excursion
x_max: 18.0; mm
Air volume displaced at x_max
V_D: 2205; cm³
Power handling
P: 1800; W
Program power
P_max: 3600; W
Nominal impedance
Z: 2; Ω
DC resistance
R_E: 1.3; Ω
Inductance (1kHz)
L_E: 0.93; mH
VC Diameter: 135; mm
Winding height
H_VC: 45; mm
Winding material: Aluminum
Force factor
Bl: 24.4; N/A
Motor constant
Bl/√R_E: 21.4; N/√W
Air gap height
H_AG: 18; mm
Material: Neodymium
Effective diameter: 395; mm
Effective area
S_D: 1225; cm²
Moving mass
M_MS: 444; g
Moving mass (without air load)
M_MD: 414.3; g
Material: Reinforced, water repellent
Stiffness
K_MS: 14.71; N/mm
Compliance
C_MS: 68; µm/N
Equivalent volume to the compliance
V_AS: 136; L
Mechanical resistance
R_MS: 11.56; N·s/m
Spider material: Double Silicon
Nominal diameter: 18; ″
: 462; mm
Overall diameter: 462; mm
Baffle cutout diameter: 417; mm
Overall depth: 238; mm
Flange thickness: 24; mm
Mounting depth: 214; mm
Volume occupied by the driver (estimated): 8.9; L
Net weight: 16.0; kg

Datasheet

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Eighteen Sound 18iD200

Subwoofer

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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