Specification:
1. SIZE: D50mm * H20mm
2. Nominal Impedance: 4Ω±15% at 1KHZ,1.0V (D.C.R=4.5Ω±10%)
3. Input Power Nom. Input 12W Max. Input 18 W
4. Operation 4.90Volt (200Hz-20KHz) Sweep Time at 2s
5. Resomant FerQ. F0: 220 ± 20% HZ (F0 Meter)
6. Flux Density 11500GAUSS ± 10%
7. Insulation Resistance No Less than 1M at DC 100V
8. Polarity
When positive voltage is applied to the (+) Terminal, V oice
Coil should move out to of the Air gap.
9. Weight 90g ± 10% (Driver weight)
10. Power Test IEC 268-5 6.93V 48 Hours
11. Heat Resistance
Temperature: +60℃ ± 2℃
Duration: 24 hours
12. Humidity Resistance
Temperature: + 40℃ ± 2℃
Relative Humidity: 93(+2/-3)%
Duration: 48 Hours(GB)
13. Low Resistance
Temperature: -10℃ ± 3℃ testing 1 Hours (GB)
And then -20℃± 3℃ testing 2 Hours(GB)
14. Dropping Test 600±25mm 60°±5° (GB)