SICA 18 PF 4

Name: 18 PF 4
Brand: SICA

Subwoofer

18″ / 463 mm

Nominal diameter

38 Hz

Resonance

0.43

Q factor

94 dB

Sensitivity

± 8 mm

Linear excursion

2400 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 93.7; dB
Frequency response: 35 - 700; Hz
Resonance frequency (free air)
f_S: 38.0; Hz
Mechanical quality factor
Q_MS: 6.46
Electrical quality factor
Q_ES: 0.47
Total quality factor
Q_TS: 0.43
Maximum linear excursion
x_max: 8.0; mm
Air volume displaced at x_max
V_D: 931; cm³
Power handling
P: 1200; W
Program power
P_max: 2400; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.2; Ω
Inductance (1kHz)
L_E: 1.85; mH
VC Diameter: 100; mm
Winding height
H_VC: 12; mm
Winding material: Copper
Former material: Glass Fiber
Flux density
B: 1.05; T
Force factor
Bl: 24.6; N/A
Motor constant
Bl/√R_E: 10.8; N/√W
Weight: 3.3; kg
Material: Ferrite
Effective diameter: 385; mm
Effective area
S_D: 1164; cm²
Moving mass
M_MS: 229.2; g
Moving mass (without air load)
M_MD: 201; g
Material: Paper
Stiffness
K_MS: 13.16; N/mm
Compliance
C_MS: 76; µm/N
Equivalent volume to the compliance
V_AS: 147; L
Mechanical resistance
R_MS: 8.47; N·s/m
Surround material: Treated Cloth
Nominal diameter: 18; ″
: 463; mm
Overall diameter: 462; mm
Baffle cutout diameter: 417; mm
Overall depth: 210; mm
Volume occupied by the driver (estimated): 7.2; L
Net weight: 13.0; kg
Frame material: Aluminium Die-Cast

Datasheet

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SICA 18 PF 4

Subwoofer

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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