Haut-parleur d'aigu (tweeter) SEAS 27TFF
[27TFF-6] Avis/Critiques 27TFF is a High Fidelity precoated fabric dome tweeter with an integrated wide surround. Sonolex precoated lightweight fabric diaphragm with high consistency and excellent stability against variations in air humidity.
Voice coil windings immersed in magnetic fluid increase short term power handling capacity and reduce the compression at high power levels.
Optimally damped cavity in the pole piece controls and slightly lowers the fundamental resonance. The chassis is precision moulded from glass fibre reinforced plastic, and its front
design offers optimum radiation conditions.
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 6 Ohms
Recommended Frequency Range 2000 - 25000 Hz
Short Term Power Handling * 220 W
Long Term Power Handling * 90 W
Characteristic Sensitivity (2.83V, 1m) 92 dB
Voice Coil Diameter 26 mm
Voice Coil Height 1.5 mm
Air Gap Height 2.0 mm
Linear Coil Travel (p-p) 0.5 mm
Voice Coil Resistance 4.8 Ohms
Voice Coil Inductance 0.05 mH
Force Factor 3.5 N/A
Free Air Resonance 1200 Hz
Moving Mass 0.30 g
Effective Piston Area 7.5 cm2
Magnetic Gap Flux Density 1.8 T
Magnet Weight 0.25 kg
Total Weight 0.50 kg
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