1. SPECIFICATION HDK-201408EA-1C (RoHS)
ITEM | SPECIFICATIONS |
01 | Type | Dynamic speaker |
02 | Dimension | External diameter 20*14 mm |
03 | Rated Input Power | 0.8W. |
04 | Max. Input Power | 1.0W. |
05 | Impedance | 8 ohm ± 15% at 2000 Hz |
06 | Resonance Frequency (Fo) | 1100 Hz ± 20% at Fo, 1V |
07 | Sensitivity (S.P.L.) | 92dB(0.8W/0.1m) ± 3 dB | at AVE 0.8K,1.0K,1.2K,1.5K Hz. |
08 | Frequency Range | Fo – 20K Hz |
09 | Total Harmonics Distortion | Max. 10% at 1K Hz ,0.8W. |
10 | Voice Coil | Diameter 8.5 mm |
11 | Magnet | Rare earth permanent (Ferrite) magnet Φ8.0 x 1.0 mm |
12 | Weight | 1.5g ± 0.3g |
13 | Appearance | Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc. |
14 | Operation Test | Must be normal at program source 0.8W |
15 | Buzz, Rattle, etc. | Should not be audible at 2.53V sine Wave between Fo to 20KHz |
16 | Polarity | When positive voltage is applied to the terminal marked (+), diaphragm should move to the front. |
17 | Terminal Strength | Capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection. |
18 | Temperature | Operating temperature: -20℃ to +60℃ Storage temperature: -30℃ to +70℃ |
2. MEASURING METHOD
2-1 .Test Condition
STANDARD
Temperature : 15 ~ 35℃
Relative humidity : 45% ~ 85%,
Atmospheric pressure : 860mbar to 1060mbar.
JUDGEMENT
Temperature : 20±3℃
Relative humidity : 60% ~ 70%,
Atmospheric pressure : 860mbar to 1060mbar
2-2 . Standard Test Fixture
1.Input Power : 0.8W(2.53V)
2.Zero Level : -dB
3.Mode : SPEAKER
4.potentiometer Range : 50dB
5.Sweep Time : 0.5sec
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