P.Audio 8NT-51MB

Name: 8NT-51MB
Brand: P.Audio

Low frequency

8″ / 203 mm

Nominal diameter

90 Hz

Resonance

0.58

Q factor

92 dB

Sensitivity

± 1.5 mm

Linear excursion

400 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 91.8; dB
Frequency response: 90 - 7000; Hz
Resonance frequency (free air)
f_S: 90.0; Hz
Mechanical quality factor
Q_MS: 4.67
Electrical quality factor
Q_ES: 0.66
Total quality factor
Q_TS: 0.58
Maximum linear excursion
x_max: 1.5; mm
Air volume displaced at x_max
V_D: 32; cm³
Power handling
P: 200; W
Program power
P_max: 400; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 6.5; Ω
Inductance (1kHz)
L_E: 0.33; mH
VC Diameter: 51; mm
Winding height
H_VC: 11; mm
Winding material: Flat aluminium wire
Former material: Kapton
Flux density
B: 1.25; T
Force factor
Bl: 11.1; N/A
Motor constant
Bl/√R_E: 4.35; N/√W
Air gap height
H_AG: 8; mm
Material: Neodymium
Effective diameter: 170; mm
Effective area
S_D: 214; cm²
Moving mass
M_MS: 22.5; g
Moving mass (without air load)
M_MD: 20.1; g
Material: Waterproof Paper
Stiffness
K_MS: 7.25; N/mm
Compliance
C_MS: 138; µm/N
Equivalent volume to the compliance
V_AS: 8.95; L
Mechanical resistance
R_MS: 2.73; N·s/m
Surround material: Cloth
Spider material: Cotton
Nominal diameter: 8; ″
: 203; mm
Overall diameter: 220; mm
Baffle cutout diameter: 185; mm
Overall depth: 110; mm
Flange thickness: 14; mm
Mounting depth: 96; mm
Volume occupied by the driver (estimated): 1.1; L
Frame material: Aluminium

Datasheet

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P.Audio 8NT-51MB

Low frequency

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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