P.Audio 12BM-500B

Name: 12BM-500B
Brand: P.Audio

Low frequency

12″ / 305 mm

Nominal diameter

52 Hz

Resonance

0.35

Q factor

96 dB

Sensitivity

± 4.8 mm

Linear excursion

1000 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 95.9; dB
Frequency response: 50 - 3000; Hz
Resonance frequency (free air)
f_S: 52.0; Hz
Mechanical quality factor
Q_MS: 5.94
Electrical quality factor
Q_ES: 0.37
Total quality factor
Q_TS: 0.35
Maximum linear excursion
x_max: 4.8; mm
Air volume displaced at x_max
V_D: 265; cm³
Power handling
P: 500; W
Program power
P_max: 1000; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.6; Ω
Inductance (1kHz)
L_E: 0.63; mH
VC Diameter: 83; mm
Winding height
H_VC: 19.6; mm
Winding material: CCA-W
Former material: Glass fiber
Flux density
B: 1.1; T
Force factor
Bl: 16.59; N/A
Motor constant
Bl/√R_E: 7.01; N/√W
Air gap height
H_AG: 10; mm
Material: Ferrite
Effective diameter: 264; mm
Effective area
S_D: 552; cm²
Moving mass
M_MS: 56.1; g
Moving mass (without air load)
M_MD: 47; g
Material: Paper
Stiffness
K_MS: 6.17; N/mm
Compliance
C_MS: 162; µm/N
Equivalent volume to the compliance
V_AS: 69.8; L
Mechanical resistance
R_MS: 3.09; N·s/m
Surround material: Cloth
Spider material: Cotton (Single)
Nominal diameter: 12; ″
: 305; mm
Overall diameter: 314; mm
Baffle cutout diameter: 283; mm
Overall depth: 148; mm
Flange thickness: 18; mm
Mounting depth: 130; mm
Volume occupied by the driver (estimated): 3.6; L
Net weight: 9.2; kg
Frame material: Aluminium

Datasheet

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P.Audio 12BM-500B

Low frequency

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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