Eminence DELTA PRO-18C

Name: DELTA PRO-18C
Brand: Eminence

4Ω

8Ω

Subwoofer

18″ / 457 mm

Nominal diameter

27 Hz

Resonance

0.32

Q factor

96 dB

Sensitivity

± 6.7 mm

Linear excursion

1000 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 95.7; dB
Frequency response: 35 - 200; Hz
Resonance frequency (free air)
f_S: 27.0; Hz
Mechanical quality factor
Q_MS: 13.24
Electrical quality factor
Q_ES: 0.32
Total quality factor
Q_TS: 0.32
Maximum linear excursion
x_max: 6.7; mm
Maximum excursion before damage
x_lim: 15.0; mm
Air volume displaced at x_max
V_D: 796; cm³
Power handling
P: 500; W
Program power
P_max: 1000; W
Nominal impedance
Z: 4; Ω
DC resistance
R_E: 3.8; Ω
Inductance (1kHz)
L_E: 2.65; mH
VC Diameter: 64; mm
Winding material: Copper
Former material: Polyimide
Force factor
Bl: 16.5; N/A
Motor constant
Bl/√R_E: 8.46; N/√W
Air gap height
H_AG: 9.7; mm
Weight: 1.899; kg
Material: Ferrite
Effective diameter: 389; mm
Effective area
S_D: 1188; cm²
Moving mass
M_MS: 137; g
Moving mass (without air load)
M_MD: 108.5; g
Material: Paper
Stiffness
K_MS: 4.0; N/mm
Compliance
C_MS: 250; µm/N
Equivalent volume to the compliance
V_AS: 489; L
Mechanical resistance
R_MS: 1.76; 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: 6.01; L
Net weight: 7.71; kg
Frame material: Die-cast aluminum

Datasheet

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Eminence DELTA PRO-18C

Subwoofer

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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