Eminence DEFINIMAX 4018LF

Name: DEFINIMAX 4018LF
Brand: Eminence

Subwoofer

18″ / 457 mm

Nominal diameter

30 Hz

Resonance

0.34

Q factor

94 dB

Sensitivity

± 8.57 mm

Linear excursion

2400 W

Program Power

Parts Express
: $$$
Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 94.3; dB
Frequency response: 31 - 200; Hz
Resonance frequency (free air)
f_S: 30.0; Hz
Mechanical quality factor
Q_MS: 11.95
Electrical quality factor
Q_ES: 0.35
Total quality factor
Q_TS: 0.34
Maximum linear excursion
x_max: 8.57; mm
Maximum excursion before damage
x_lim: 15.9; mm
Air volume displaced at x_max
V_D: 1018; cm³
Power handling
P: 1200; W
Program power
P_max: 2400; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 6.1; Ω
Inductance (1kHz)
L_E: 4.54; mH
VC Diameter: 102; mm
Winding material: Copper
Former material: Polyimide
Force factor
Bl: 26.75; N/A
Motor constant
Bl/√R_E: 10.8; N/√W
Air gap height
H_AG: 9.5; mm
Weight: 3.09; kg
Material: Ferrite
Effective diameter: 389; mm
Effective area
S_D: 1188; cm²
Moving mass
M_MS: 217; g
Moving mass (without air load)
M_MD: 188.5; g
Material: Water resistant paper
Stiffness
K_MS: 7.69; N/mm
Compliance
C_MS: 130; µm/N
Equivalent volume to the compliance
V_AS: 255; L
Mechanical resistance
R_MS: 3.42; N·s/m
Surround material: Cloth
Nominal diameter: 18; ″
: 457; mm
Overall diameter: 457; mm
Baffle cutout diameter: 421; mm
Overall depth: 207; mm
Volume occupied by the driver: 6.62; L
Net weight: 10.89; kg
Frame material: Die-cast aluminum

Eminence DEFINIMAX 4018LF SPL & Impedance

Datasheet

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Eminence DEFINIMAX 4018LF

Subwoofer

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Specifications

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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