27TDC/TV H1150
27TDC/TV
H1150
27mm High Definition precoated fabric dome tweeter with a wide, soft
polymer surround designed to give high stability without magnetic
fluid damping. The dome and surround materials give high
consistency and excellent stability against variations in air humidity.
The voice coil is wound on an aluminium voice coil former with
adequate ventilating holes to eliminate noise from internal air flow. A
shielded magnet system allows use in close proximity to video screens
and TV sets. Using the screening can as a rear chamber with optimal
acoustic damping allows 27TDC/TV 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.
100
50
95
90
40
85
SPL [dB]
30
75
70
20
65
60
Impedance [ohm]
80
10
55
50
100
1 000
10 000
0
Frequency [Hz]
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
200 - 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
800 Hz
Characteristic Sensitivity (2.83V, 1m)
89.5 dB
Moving Mass
0.30 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 mm
Magnet Weight
0.40 kg
Linear Coil Travel (p-p)
0.5 mm
Total Weight
0.50 kg
Aug 2006-1
*IEC 268-5, via High Pass Butterworth Filter 2500Hz 12 dB/oct.
SEAS reserves the right to change technical data
T27-511
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