H 614 Response curve recorded in anechoic chamber (Free-field, 4 pi radiation) with 0.5m microphone distance. The loudspeaker is mounted in a 0.6m by 0.8m baffle. OF NORWAY TWEETER 25TAFN/G Cumulative spectral decay 25mm High Fidelity dome tweeter with a very small glass fibre reinforced plastic chassis. The neodymium magnet allows a high quality speaker in a very compact design. This unit gives new possibilities in loudspeaker cabinet design, and is well suited for use in automobile sound. The construction of the magnet system gives very low magnetic stray fields since the magnet is enclosed in a soft steel housing. Thus, this unit is immediately ready for Audio-video systems. The aluminium diaphragm with critically designed shape and thickness behaves like a piston throughout the audible frequency range, resulting in good dispersion above 10 kHz. A hexa grid protects the diaphragm, and supports a phase plate which compensates for a slight axial roll off towards 20 kHz. A specially designed soft polyamide surround allows a low fundamental frequency and excellent mechanical linearity. The voice coil is immersed in magnetic fluid, allowing high power handling capacity and simplified crossover design. NOTES 6 NOMINAL IMPEDANCE RECOMMENDED FREQUENCY RANGE Ohms 3000-25000 Hz VOICE COIL RESISTANCE 4.8 Ohms VOICE COIL INDUCTANCE (EQUIVALENT) 0.05 mH SHORT TERM MAXIMUM POWER* 240 W VOICE COIL DIAMETER 26 mm LONG TERM MAXIMUM POWER* 100 W VOICE COIL HEIGHT 1.5 mm CHARACTERISTIC SENSITIVITY (1W , 1m) 89 dB SPL MOVING MASS OPERATING POWER (96 dB SPL , 1 m) 5.0 W EFFECTIVE PISTON AREA 7.0 sq.cm LINEAR COIL TRAVEL ( p-p ) 0.5 mm AIR GAP HEIGHT 2.0 mm MAGNETIC GAP FLUX DENSITY 1.3 T FORCE FACTOR 2.45 N/A MAGNET WEIGHT 0.01 Kg TOTAL WEIGHT 0.09 Kg FREE AIR RESONANCE * IEC 268-5, VIA HIGH PASS BUTTERWORTH FILTER: JUL.96 T25-801 0.33 g 3500 1800 Hz Hz 12 dB/oct.
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