27TAF/G H 882 TWEETER
H 882
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
27TAF/G
Cumulative spectral decay
27mm High Definition aluminium/magnesium alloy dome tweeter with a
wide, soft fabric surround made from SONOTEX. The dome and surround
materials give high consistency and excellent stability against variations in
air humidity and temperature. The diaphragm is protected by a highly
perforated hexagrid carrying an acoustic lens which tailors the high
frequency roll off characteristic. The voice coil is wound on an aluminium
voice coil former with adequate ventilating holes to eliminate noise from
internal air flow. The voice coil is immersed in low viscosity magnetic
fluid, for high power handling capacity and simplified crossover design. An
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.
6
NOMINAL IMPEDANCE
RECOMMENDED FREQUENCY RANGE
Ohms
3000-25000 Hz
VOICE COIL RESISTANCE
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)
91 dB SPL
MOVING MASS
OPERATING POWER (96 dB SPL , 1 m)
3.2 W
EFFECTIVE PISTON AREA
7.6 sq.cm
LINEAR COIL TRAVEL ( p-p )
0.5 mm
AIR GAP HEIGHT
2.0 mm
MAGNETIC GAP FLUX DENSITY
1.8 T
FORCE FACTOR
3.5 N/A
NOTES
MAGNET WEIGHT
0.25 Kg
TOTAL WEIGHT
0.50 Kg
T27-102
0.32 g
FREE AIR RESONANCE
* IEC 268-5, VIA HIGH PASS BUTTERWORTH FILTER:
APR.97
4.8 Ohms
3500
1200 Hz
Hz 12 dB/oct.
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