RCF LF18G908

Name: LF18G908
Brand: RCF

Subwoofer

18″ / 457 mm

Nominal diameter

33 Hz

Resonance

0.29

Q factor

96 dB

Sensitivity

± 9 mm

Linear excursion

1800 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 96.0; dB
Frequency response: 30 - 1000; Hz
Resonance frequency (free air)
f_S: 33.0; Hz
Mechanical quality factor
Q_MS: 7.60
Electrical quality factor
Q_ES: 0.30
Total quality factor
Q_TS: 0.29
Maximum linear excursion
x_max: 9.0; mm
Maximum excursion before damage
x_lim: 25.0; mm
Air volume displaced at x_max
V_D: 1080; cm³
Power handling
P: 900; W
Program power
P_max: 1800; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 4.8; Ω
Inductance (1kHz)
L_E: 1.8; mH
VC Diameter: 102; mm
Winding height
H_VC: 23; mm
Winding material: Copper
Former material: Glass Fiber
Force factor
Bl: 24.6; N/A
Motor constant
Bl/√R_E: 11.2; N/√W
Air gap height
H_AG: 12; mm
Effective diameter: 395; mm
Effective area
S_D: 1200; cm²
Moving mass
M_MS: 182; g
Moving mass (without air load)
M_MD: 152.7; g
Stiffness
K_MS: 7.81; N/mm
Compliance
C_MS: 128; µm/N
Equivalent volume to the compliance
V_AS: 268; L
Mechanical resistance
R_MS: 4.97; N·s/m
Spider material: with silicon damping
Nominal diameter: 18; ″
: 457; mm
Overall diameter: 465; mm
Baffle cutout diameter: 424; mm
Overall depth: 196; mm
Volume occupied by the driver: 6.0; L
Net weight: 13.0; kg

Datasheet

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RCF LF18G908

Subwoofer

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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