B&C Speaker 8CX21

Name: 8CX21
Brand: B&C Speaker

Coaxial

8″ / 210 mm

Nominal diameter

74 Hz

Resonance

0.36

Q factor

93 dB

Sensitivity

± 5 mm

Linear excursion

400 W

Program Power

Parts Express
: $$$
Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 93.4; dB
Frequency response: 75 - 20000; Hz
Resonance frequency (free air)
f_S: 74.0; Hz
Mechanical quality factor
Q_MS: 4.10
Electrical quality factor
Q_ES: 0.39
Total quality factor
Q_TS: 0.36
Maximum linear excursion
x_max: 5.0; mm
Air volume displaced at x_max
V_D: 110; cm³
Power handling
P: 200; W
Program power
P_max: 400; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.2; Ω
Inductance (1kHz)
L_E: 1.2; mH
VC Diameter: 52; mm
Winding height
H_VC: 16; mm
Winding material: Copper
Former material: Kapton
Flux density
B: 1.1; T
Force factor
Bl: 11.5; N/A
Motor constant
Bl/√R_E: 5.04; N/√W
Air gap height
H_AG: 8; mm
Material: Ferrite
Effective diameter: 167; mm
Effective area
S_D: 220; cm²
Moving mass
M_MS: 21; g
Moving mass (without air load)
M_MD: 18.5; g
Material: Waterproof Front Side
Stiffness
K_MS: 4.61; N/mm
Compliance
C_MS: 217; µm/N
Equivalent volume to the compliance
V_AS: 15; L
Mechanical resistance
R_MS: 2.38; N·s/m
Nominal diameter: 8; ″
: 210; mm
Overall diameter: 225; mm
Baffle cutout diameter: 187; mm
Overall depth: 135; mm
Flange thickness: 11; mm
Mounting depth: 124; mm
Volume occupied by the driver (estimated): 1.6; L
Net weight: 4.1; kg

Datasheet

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B&C Speaker 8CX21

Coaxial

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Specifications

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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