Haut-parleur d'aigu (tweeter) SEAS 19TAFD/G
[19TAFD/G-8] Avis/Critiques 19mm High Fidelity dome tweeter with smooth, extended frequency response. Aluminium diaphragm suspended by a specially designed soft Sonotex surround which allows a low fundamental frequency.
Double magnet reduces stray fields around the magnet system and allows the unit to be used in close proximity to a CRT. The double magnet also gives a higher sensitivity. Fine mesh grid protects the diaphragm and carries a phase plate which compensates for a slight axial roll off towards 20 kHz.
Voice coil windings immersed in magnetic fluid increase short term power handling capacity and reduce the compression at high power levels.
The frequency responses above show measured free field sound pressure in 0, 30, and 60 degrees, mounted in a 0.6m by 0.8m baffle. Input 2.83 Vrms, microphone distance 0.5m, normalized to SPL 1m. The impedance is measured without baffle using a 2V sine signal.
Nominal Impedance 8 Ohms
Recommended Frequency Range 4000 - 20000Hz
Short Term Power Handling * 220 W
Long Term Power Handling * 90 W
Characteristic Sensitivity (2.83V, 1m) 88 dB
Voice Coil Diameter 19.5 mm
Voice Coil Height 1.5 mm
Air Gap Height 2.0 mm
Linear Coil Travel (p-p) 0.5 mm
Voice Coil Resistance 6.2 Ohms
Voice Coil Inductance 0.05 mH
Force Factor 2.6 N/A
Free Air Resonance 1700 Hz
Moving Mass 0.23 g
Effective Piston Area 4.0 cm2
Magnetic Gap Flux Density 1.4 T
Magnet Weight 0.12 kg
Total Weight 0.30 kg
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