P.Audio 18NT-115XB

Name: 18NT-115XB
Brand: P.Audio

Low frequency

18″ / 457 mm

Nominal diameter

40 Hz

Resonance

0.44

Q factor

94 dB

Sensitivity

± 9.8 mm

Linear excursion

3200 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 93.8; dB
Frequency response: 35 - 1000; Hz
Resonance frequency (free air)
f_S: 40.0; Hz
Mechanical quality factor
Q_MS: 13.27
Electrical quality factor
Q_ES: 0.45
Total quality factor
Q_TS: 0.44
Maximum linear excursion
x_max: 9.8; mm
Air volume displaced at x_max
V_D: 1201; cm³
Power handling
P: 1600; W
Program power
P_max: 3200; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.2; Ω
Inductance (1kHz)
L_E: 0.98; mH
VC Diameter: 114; mm
Winding height
H_VC: 33; mm
Winding material: Copper
Former material: Glass fiber
Flux density
B: 1.2; T
Force factor
Bl: 28.96; N/A
Motor constant
Bl/√R_E: 12.7; N/√W
Air gap height
H_AG: 13.5; mm
Material: Neodymium
Effective diameter: 395; mm
Effective area
S_D: 1225; cm²
Moving mass
M_MS: 288.3; g
Moving mass (without air load)
M_MD: 258.3; g
Material: Waterproof Paper
Stiffness
K_MS: 18.87; N/mm
Compliance
C_MS: 53; µm/N
Equivalent volume to the compliance
V_AS: 113; L
Mechanical resistance
R_MS: 5.46; N·s/m
Surround material: Cloth
Spider material: Double Silicone
Nominal diameter: 18; ″
: 457; mm
Overall diameter: 466; mm
Baffle cutout diameter: 430; mm
Overall depth: 253; mm
Flange thickness: 21; mm
Mounting depth: 232; mm
Volume occupied by the driver (estimated): 7.9; L
Net weight: 12.3; kg
Frame material: Aluminium

Datasheet

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P.Audio 18NT-115XB

Low frequency

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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