Morel EM 428
4" (10cm) bass-midrange driver
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Description
The EM 428 from Morel is a 4" (10 cm) bass-midrange speaker designed for music lovers who value high-quality sound experiences. Equipped with a robust Uniflow™ steel chassis and a powerful neodymium magnet system, it offers a high power handling of up to 210 watts. The DPC (Damped Polymer Composite) cone ensures a balanced sound image and the 2-1/8" Hexatech™ aluminum voice coil contributes to the excellent sound reproduction. With a frequency response of 50 to 5,000 Hz and a sensitivity of 87 dB, this model is an ideal choice for demanding audio installations.
Highlights
- Uniflow™ steel chassis
- Neodymium magnet system
- DPC membrane (Damped Polymer Composite) with flat profile
- 2-1/8" large Hexatech™ aluminum voice coil
Properties
- Elite Series woofers
- Woofer type Midwoofer
- Nominal diameter 102 mm
- Load capacity (QMW) 150 Watts
- Load capacity (max) 210 watts
- Impedance (Z) 8 ohms
- Sensitivity (SPL at 1m / 2.83V) 87 dB
- Frequency response 50 to 5,000 Hz
- Voice coil diameter 54 mm
- Direct current resistance (Re) 5.4 ohms
- Voice coil induction (Le) 0.36 mH
- Resonant frequency (Fs) 68 Hz
- Mechanical quality (Qms) 3.03
- Electrical quality (Qes) 0.48
- Overall quality (Qts) 0.41
- Movable mass (Mms) 6.55 g
- Compliance of the suspension (Cms) 0.88 mm/N
- Diaphragm area (Sd) 57 cm²
- Force factor (BL) 5.4 Tm
- Equivalent volume (Vas) 3.39 L
- Maximum deflection (Xmax) 3 mm
- Driver's Mechanical Losses (Rms) 0.86 N-s/m
- Cone / Diaphragm Material Poly Composite
- Bead material Rubber
- Voice coil wire material Aluminum
- Voice coil forming material Aluminum
- Basket / frame material Steel
- Magnet material Neodymium
- Outer diameter 119 mm
- Total depth 56 mm
- Cut-out diameter 94 mm
- Fixing holes 4
- Fixing hole diameter 3 mm
- Closed volume 1.13 L
- Closed F3 131 Hz
- Bass reflex volume 3.11 L
- Bass reflex F3 69 Hz