Celestion FTR18-4080HDX

Name: FTR18-4080HDX
Brand: Celestion

Low frequency

18″ / 457 mm

Nominal diameter

39 Hz

Resonance

0.43

Q factor

95 dB

Sensitivity

± 10.1 mm

Linear excursion

2000 W

Program Power

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Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 94.7; dB
Frequency response: 30 - 2500; Hz
Resonance frequency (free air)
f_S: 39.2; Hz
Mechanical quality factor
Q_MS: 5.39
Electrical quality factor
Q_ES: 0.47
Total quality factor
Q_TS: 0.43
Maximum linear excursion
x_max: 10.1; mm
Air volume displaced at x_max
V_D: 1146; cm³
Power handling
P: 1000; W
Program power
P_max: 2000; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.0; Ω
Inductance (1kHz)
L_E: 1.79; mH
VC Diameter: 100; mm
Winding height
H_VC: 25; mm
Winding material: Round copper
Former material: Glass fibre
Force factor
Bl: 21.29; N/A
Motor constant
Bl/√R_E: 9.52; N/√W
Air gap height
H_AG: 9.5; mm
Weight: 3.1; kg
Material: Ferrite
Effective diameter: 380; mm
Effective area
S_D: 1134; cm²
Moving mass
M_MS: 171.8; g
Moving mass (without air load)
M_MD: 144.9; g
Material: Glass loaded paper (weather-resistant)
Stiffness
K_MS: 10.0; N/mm
Compliance
C_MS: 100; µm/N
Equivalent volume to the compliance
V_AS: 175; L
Mechanical resistance
R_MS: 7.85; N·s/m
Surround material: Cloth-sealed
Nominal diameter: 18; ″
: 457; mm
Overall diameter: 452; mm
Baffle cutout diameter: 416; mm
Overall depth: 205; mm
Volume occupied by the driver (estimated): 5.8; L
Net weight: 9.8; kg
Frame material: Cast aluminium

Datasheet

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Celestion FTR18-4080HDX

Low frequency

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Specifications

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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