Eminence ALPHA 3-8

Name: ALPHA 3-8
Brand: Eminence

Full-range

3″ / 76 mm

Nominal diameter

118 Hz

Resonance

0.5

Q factor

87 dB

Sensitivity

± 2.4 mm

Linear excursion

60 W

Program Power

Parts Express
: $$
Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 87.1; dB
Frequency response: 150 - 20000; Hz
Resonance frequency (free air)
f_S: 118; Hz
Mechanical quality factor
Q_MS: 7.94
Electrical quality factor
Q_ES: 0.53
Total quality factor
Q_TS: 0.50
Maximum linear excursion
x_max: 2.4; mm
Maximum excursion before damage
x_lim: 4.0; mm
Air volume displaced at x_max
V_D: 6.9; cm³
Power handling
P: 30; W
Program power
P_max: 60; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.1; Ω
Inductance (1kHz)
L_E: 0.11; mH
VC Diameter: 20; mm
Winding material: Copper
Former material: Polyimide
Force factor
Bl: 3.93; N/A
Motor constant
Bl/√R_E: 1.74; N/√W
Air gap height
H_AG: 2.5; mm
Weight: 0.227; kg
Material: Ferrite
Effective diameter: 60; mm
Effective area
S_D: 29; cm²
Moving mass
M_MS: 2; g
Moving mass (without air load)
M_MD: 1.9; g
Material: Paper/Poly sandwich
Stiffness
K_MS: 1.19; N/mm
Compliance
C_MS: 840; µm/N
Equivalent volume to the compliance
V_AS: 0.95; L
Mechanical resistance
R_MS: 0.19; N·s/m
Surround material: Poly
Nominal diameter: 3; ″
: 76; mm
Overall diameter: 101; mm
Baffle cutout diameter: 77; mm
Overall depth: 45; mm
Volume occupied by the driver: 0.13; L
Net weight: 0.41; kg
Frame material: Pressed steel

Datasheet

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Eminence ALPHA 3-8

Full-range

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Specifications

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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