|
SPECIFICATION |
| Dimension |
Diameter 57mm / Thickness
11.3mm. |
| Impedance. |
8Ω±10% at 1.0V 1 KHz. |
| Output S.P.L. |
86 dB/W (1m) ± 3 dB at
0.8, 1.0, 1.2, 1.5 KHz. (Average figures). |
| Resonant frequency. |
450 Hz ± 20% at 1.0
V. |
| Effective frequency band. |
Fo ~ 4KHz. |
| Power. |
Nor. 0.3 W. / Max. 0.5 W. |
| Distortion. |
Less than 5% at 1. KHz 0.3
W. |
| Magnet. |
12.5mm × 1.5mm. (Nd-Fe-B) |
| Flux density. |
6,600 Gauss (SURFACE). |
| Weight. |
18g ± 1.0g. |
| Polarity. |
The left hand terminal
should be MINUS(-). |
| Terminal strength. |
1.0 Kg for 30 sec. |
| Operation test. |
Must be normal with program
source 0.3 W. |
| Buzz & rattle, etc. |
Not be audible at
1.55 V, sine wave, Fo ~ 4 KHz. |
| Load test. |
(White) noise 0.3 W, 96
Hrs. |
| High temperature test. |
+60℃ ± 3 ℃ 96
Hrs. |
| Low temperature test. |
-20℃ ± 3 ℃ 96 Hrs. |
| Operating temp. range. |
High + 60℃ ± 3℃ Low
-20℃ ± 3℃ |
| Humidity test. |
+40℃ ± 3℃ 95% 96 Hrs. |
U5708BC
