Tweeter SEAS 27TBC/GTV série PRESTIGE
[27TBC/GTV-6] Avis/Critiques 27TBC/GTV is a High Definition metal dome tweeter with a wide, soft polymer surround and a shielded magnet system with a rear chamber.
Aluminium/magnesium alloy diaphragm with pistonic behaviour throughout the audible frequency range, resulting in a good dispersion also above 10kHz. A Hexagrid protects the diaphragm, and supports a phase plate which compensates for a slight axial roll off towards 20 kHz.
Sonomax surround for low resonance, excellent mechanical linearity and stability without magnetic fluid damping. A shielded magnet system allows use in close proximity to CRT screens. Using the screening can as a rear chamber with optimal acoustic damping allows the tweeter to be used with moderately low crossover frequencies.
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
Voice Coil Resistance 4.8 Ohms
Recommended Frequency Range 2000 - 25000 Hz
Voice Coil Inductance 0.05 mH
Short Term Power Handling * 150 W
Force Factor 2.8 N/A
Long Term Power Handling * 55 W
Free Air Resonance 900 Hz
Characteristic Sensitivity (2.83V, 1m) 91 dB
Moving Mass 0.33 g
Voice Coil Diameter 26 mm
Effective Piston Area 7.0 cm2
Voice Coil Height 1.5 mm
Magnetic Gap Flux Density 1.5 T
Air Gap Height 2.0 mm
Magnet Weight 0.40 kg
Linear Coil Travel (p-p) 0.5 mm
Total Weight 0.50 kg
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