25tafn/gh 614 tweeter
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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