Morel Elite EM 428

Name: EM 428
Brand: Morel

Mid-range

4″ / 119 mm

Nominal diameter

68 Hz

Resonance

0.41

Q factor

85 dB

Sensitivity

± 3 mm

Linear excursion

300 W

Program Power

Sensitivity (1W, 1m, infinite baffle)
SPL_1W: 85.4; dB
Resonance frequency (free air)
f_S: 68.0; Hz
Mechanical quality factor
Q_MS: 3.03
Electrical quality factor
Q_ES: 0.48
Total quality factor
Q_TS: 0.41
Maximum linear excursion
x_max: 3.0; mm
Air volume displaced at x_max
V_D: 17; cm³
Power handling
P: 150; W
Program power
P_max: 300; W
Nominal impedance
Z: 8; Ω
DC resistance
R_E: 5.4; Ω
Inductance (1kHz)
L_E: 0.36; mH
VC Diameter: 54; mm
Winding height
H_VC: 12; mm
Winding material: Hexatech™ Aluminum
Former material: Aluminum
Flux density
B: 0.88; T
Force factor
Bl: 5.4; N/A
Motor constant
Bl/√R_E: 2.32; N/√W
Air gap height
H_AG: 6; mm
Material: Neodymium vented
Effective diameter: 85; mm
Effective area
S_D: 57; cm²
Moving mass
M_MS: 6.6; g
Moving mass (without air load)
M_MD: 6.2; g
Material: Damped polymer composite
Stiffness
K_MS: 1.14; N/mm
Compliance
C_MS: 880; µm/N
Equivalent volume to the compliance
V_AS: 3.5; L
Mechanical resistance
R_MS: 0.86; N·s/m
Nominal diameter: 4; ″
: 119; mm
Overall diameter: 119; mm
Baffle cutout diameter: 94; mm
Overall depth: 56; mm
Flange thickness: 5; mm
Mounting depth: 51; mm
Volume occupied by the driver (estimated): 0.16; L
Net weight: 0.518; kg

Datasheet

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Morel Elite EM 428

Mid-range

Thiele & Small parameters

Large signal parameters

Voice Coil

Magnet

Diaphragm

Suspensions

Dimensions

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