Type:Dynamic Speaker
Weight:Approx 0.5 Grams.
Magnet:Material Nd-Fe-B
Impedance:16 ± 15% Ohm at 1000Hz.
Power Rating:Normal 3m W Maximum 5m W
S.P.L.:94±3dB/1.0mWatt 0.01Meter. At 1000Hz.
Distortion:4% Maximum At 20-10000Hz. 1.0mW.
Abnormal Sound Test:Must be Normal Tested by 0.28 Volts. Sine wave for 20~5kHz
Polarity:Diaphragm Shall Move Forward When Apply a Positive DC. Red “+” or“ Marked” Terminal
Operating Temperature:-20°C to +55°C
Storage Temperature:-25°Cto +60°C
Reliable Test
After any following test leave speakers at room temperature for 1 hour, SPL shall not deviate by ± 3 db from initial value
Load Test:white noise for 96 hours at 5 mW input power.
High Temperature Test:+60±2 °C 96hours
Low Temperature Test: -25±2 °C 96hours
Humidity Test:+40±2 °C relative humidity 90~95%R.H 96hours
Vibration Test:Frequency 30 ± 15 Hz, Amplitude 1.5 mm for 2 Hours per axis(x. y. z axis)
Temperature Cycle Test:-25°C ~ + 65 °C 5 Cycles Temperature test.
Drop Test:1 M free falling on Concrete floor, 10 times.
Dimension
Frequency Response Fig
Frequency Range 20-20,000Hz
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