Haut-parleur SEAS L22RN4X/P
[L22RN4X/P-8] Avis/Critiques xtremely stiff aluminium cone gives tremendous bass precision. The cone and the low loss rubber surround show no sign of the familiar cone edge resonance and distortion associated with soft cones. 4-layer, extremely long, high temperature voice coil wound on an aluminium voice coil former gives a high power handling capacity.
Phase plug reduces compression due to temperature variations in the voice coil, eliminates resonances that would occur in the volume between the dust cap and the pole piece and increases the power handling capacity. Large magnet system provides reasonably high efficiency and low Q.
Extremely stiff and stable injection moulded metal basket keeps the critical components in perfect alignment. Large windows in the basket both above and below the spider reduce sound reflection, air flow noise and cavity resonance to a minimum.
The frequency responses above show measured free field sound pressure in 0, 30, and 60 degrees angle using a 21L closed box. Input 2.83 Vrms, microphone distance 0.5m, normalized to SPL 1m.The dotted line is a calculated response in infinite baffle based on the parameters given for this specific driver. The impedance is measured in free air without baffle using a 2V sine signal.
Nominal Impedance 8 Ohms
Voice Coil Resistance 6.1 Ohms
Recommended Frequency Range 20 - 1000 Hz
Voice Coil Inductance 3.76 mH
Short Term Power Handling * 300 W
Force Factor 10.7 N/A
Long Term Power Handling * 125 W
Free Air Resonance 21 Hz
Characteristic Sensitivity (2,83V, 1m) 86.5 dB
Moving Mass 40.0 g
Voice Coil Diameter 39 mm
Air Load Mass In IEC Baffl e 1.89 g
Voice Coil Height 20 mm
Suspension Compliance 1.4 mm/N
Air Gap Height 6 mm
Suspension Mechanical Resistance 1.76 Ns/m
Linear Coil Travel (p-p) 14 mm
Effective Piston Area 220 cm2
Maximum Coil Travel (p-p) 21 mm
VAS 93 Litres
Magnetic Gap Flux Density 0.9 T
QMS 3.13
Magnet Weight 0.64 kg
QES 0.29
Total Weight 2.20 kg
QTS 0.27
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