Radian 5215B

Name: 5215B
Brand: Radian

Coaxial

15″ / 380 mm

Nominal diameter

40 Hz

Resonance

0.26

Q factor

97 dB

Sensitivity

± 5.5 mm

Linear excursion

1250 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 97.1; dB
Frequency response: 40 - 18000; Hz
Resonance frequency (free air)
f_S: 40.0; Hz
Mechanical quality factor
Q_MS: 3.28
Electrical quality factor
Q_ES: 0.29
Total quality factor
Q_TS: 0.26
Maximum linear excursion
x_max: 5.5; mm
Air volume displaced at x_max
V_D: 484; cm³
Power handling
P: 625; W
Program power
P_max: 1250; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.3; Ω
Inductance (1kHz)
L_E: 1.3; mH
VC Diameter: 102; mm
Winding height
H_VC: 16.5; mm
Winding material: Copper Clad aluminum
Former material: Fiberglass
Force factor
Bl: 20.0; N/A
Motor constant
Bl/√R_E: 8.69; N/√W
Air gap height
H_AG: 10; mm
Material: Ferrite
Effective diameter: 335; mm
Effective area
S_D: 880; cm²
Moving mass
M_MS: 88; g
Moving mass (without air load)
M_MD: 70; g
Material: Paper/Kevlar composite
Stiffness
K_MS: 5.44; N/mm
Compliance
C_MS: 184; µm/N
Equivalent volume to the compliance
V_AS: 202; L
Mechanical resistance
R_MS: 6.74; N·s/m
Nominal diameter: 15; ″
: 380; mm
Overall diameter: 388; mm
Baffle cutout diameter: 356; mm
Overall depth: 209; mm
Flange thickness: 16; mm
Mounting depth: 193; mm
Volume occupied by the driver (estimated): 6.7; L
Net weight: 14.0; kg
Frame material: Cast Aluminum

Datasheet

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Radian 5215B

Coaxial

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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