Celestion TF1225

Name: TF1225
Brand: Celestion

Low frequency

12″ / 305 mm

Nominal diameter

56 Hz

Resonance

0.37

Q factor

95 dB

Sensitivity

± 4.5 mm

Linear excursion

500 W

Program Power

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Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 95.4; dB
Frequency response: 50 - 4000; Hz
Resonance frequency (free air)
f_S: 55.6; Hz
Mechanical quality factor
Q_MS: 3.11
Electrical quality factor
Q_ES: 0.42
Total quality factor
Q_TS: 0.37
Maximum linear excursion
x_max: 4.5; mm
Air volume displaced at x_max
V_D: 239; cm³
Power handling
P: 250; W
Program power
P_max: 500; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.1; Ω
Inductance (1kHz)
L_E: 0.86; mH
VC Diameter: 64; mm
Winding height
H_VC: 13; mm
Winding material: Round copper
Former material: Polyimide
Force factor
Bl: 14.32; N/A
Motor constant
Bl/√R_E: 6.35; N/√W
Air gap height
H_AG: 8; mm
Weight: 1.2; kg
Material: Ferrite
Effective diameter: 260; mm
Effective area
S_D: 531; cm²
Moving mass
M_MS: 48.5; g
Moving mass (without air load)
M_MD: 39.9; g
Material: Kevlar loaded paper
Stiffness
K_MS: 5.88; N/mm
Compliance
C_MS: 170; µm/N
Equivalent volume to the compliance
V_AS: 67.3; L
Mechanical resistance
R_MS: 5.45; N·s/m
Surround material: Cloth-sealed
Nominal diameter: 12; ″
: 305; mm
Overall diameter: 309; mm
Baffle cutout diameter: 283; mm
Overall depth: 130; mm
Volume occupied by the driver (estimated): 1.9; L
Net weight: 4.1; kg
Frame material: Pressed steel

Datasheet

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Celestion TF1225

Low frequency

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Specifications

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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