Eminence IMPERO 18A

Name: IMPERO 18A
Brand: Eminence

4Ω

8Ω

Subwoofer

18″ / 457 mm

Nominal diameter

33 Hz

Resonance

0.43

Q factor

95 dB

Sensitivity

± 8 mm

Linear excursion

2400 W

Program Power

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Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 95.1; dB
Frequency response: 39 - 800; Hz
Resonance frequency (free air)
f_S: 33.0; Hz
Mechanical quality factor
Q_MS: 14.02
Electrical quality factor
Q_ES: 0.44
Total quality factor
Q_TS: 0.43
Maximum linear excursion
x_max: 8.0; mm
Maximum excursion before damage
x_lim: 20.2; mm
Air volume displaced at x_max
V_D: 927; cm³
Power handling
P: 1200; W
Program power
P_max: 2400; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.4; Ω
Inductance (1kHz)
L_E: 1.47; mH
VC Diameter: 102; mm
Winding material: Copper
Former material: Glass Fiber
Force factor
Bl: 18.9; N/A
Motor constant
Bl/√R_E: 8.13; N/√W
Air gap height
H_AG: 12.7; mm
Weight: 3.09; kg
Material: Ferrite
Effective diameter: 384; mm
Effective area
S_D: 1159; cm²
Moving mass
M_MS: 140; g
Moving mass (without air load)
M_MD: 112.2; g
Material: Water resistant paper
Stiffness
K_MS: 5.88; N/mm
Compliance
C_MS: 170; µm/N
Equivalent volume to the compliance
V_AS: 317; L
Mechanical resistance
R_MS: 2.07; N·s/m
Surround material: Treated cloth
Nominal diameter: 18; ″
: 457; mm
Overall diameter: 457; mm
Baffle cutout diameter: 421; mm
Overall depth: 211; mm
Volume occupied by the driver: 6.7; L
Net weight: 12.38; kg
Frame material: Die-cast aluminum

Datasheet

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Eminence IMPERO 18A

Subwoofer

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Specifications

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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