Oberton 8NCX

Name: 8NCX
Brand: Oberton

Coaxial

8″ / 210 mm

Nominal diameter

77 Hz

Resonance

0.4

Q factor

94 dB

Sensitivity

± 5.25 mm

Linear excursion

400 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 93.5; dB
Frequency response: 70 - 20000; Hz
Resonance frequency (free air)
f_S: 77.2; Hz
Mechanical quality factor
Q_MS: 4.66
Electrical quality factor
Q_ES: 0.44
Total quality factor
Q_TS: 0.40
Maximum linear excursion
x_max: 5.25; mm
Air volume displaced at x_max
V_D: 106; cm³
Power handling
P: 200; W
Program power
P_max: 400; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.8; Ω
Inductance (1kHz)
L_E: 0.65; mH
VC Diameter: 51; mm
Winding height
H_VC: 15; mm
Winding material: Aluminium
Former material: Glass fiber
Flux density
B: 0.9; T
Force factor
Bl: 10.1; N/A
Motor constant
Bl/√R_E: 4.19; N/√W
Air gap height
H_AG: 9; mm
Material: Neodymium
Effective diameter: 160; mm
Effective area
S_D: 202; cm²
Moving mass
M_MS: 15.9; g
Moving mass (without air load)
M_MD: 13.7; g
Material: Paper with carbon fibers
Stiffness
K_MS: 3.75; N/mm
Compliance
C_MS: 267; µm/N
Equivalent volume to the compliance
V_AS: 14.9; L
Mechanical resistance
R_MS: 1.66; N·s/m
Nominal diameter: 8; ″
: 210; mm
Overall diameter: 225; mm
Baffle cutout diameter: 187; mm
Overall depth: 115; mm
Volume occupied by the driver (estimated): 1.1; L
Net weight: 2.6; kg
Frame material: Die Cast Aluminium

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Oberton 8NCX

Coaxial

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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