New 27mm Speaker Driver for Headphones

Model:
RB-27040G-01R
Production Capacity:
500 000pcs/Month
Port:
Shenzhen, China
Manufacturer Certificate:
ISO14000&ISO9001
Customer Design Is Welcomed

Model : RB-27040G-01R
Below Measuring condition under temperature : 25~35℃ R.H. 25 ~75%. According to standard GB/T9396-1996

Specifications:

New 27mm Speaker Driver for Headphones

Plastic housing mylar micro speaker driver unit for headphone, diameter 27+/-0.3mm, thickness is 7.2+/-0.3mm, used for small size headphones, with plastic mylar diaphragm protecting cover. Plastic housing micro speaker is usually light weighted.

  • 1. Type: Dynamic Speaker
  • 2. Dimension: Outline Dimension Shall Be As Shown In Fig(1).
  • 3. Weight: Approx 5.8 Grams.
  • 4. Magnet: Material: Nd-Fe-B | Size: Φ12.5×1.5mm.
  • 5. Impedance: 40 ± 15% Ohm at 1000Hz. 1.0V(D.C.R=40Ω±7%)
  • 6. Power Rating: Normal: 30m W | Maximum: 100m W
  • 7. FO: 200Hz±20%
  • 8. S.P.L.: 120dB±3dB/3.0mWatt 0.01Meter. At 600,800,1000,1200Hz.
    Measurement Method Shown In Fig(2).
    114dB±3dB/1mW 0.01Meter. At 1000Hz.
    Measurement Method Shown In Fig(3).
  • 9. Frequency Range: FO~20KHz±20% S.P.L -10dB
  • 10. Distortion: 5% Maximum At 1000Hz. 3.0mW.
  • 11. Abnormal Sound Test: Must be Normal Tested by 1.1 Volts. Sine wave for 50~5kHz
  • 12. Polarity: Diaphragm Shall Move Forward When Apply a Positive DC.
    Red “+” or“ Marked” Terminal
  • 13. Operating Temperature: -25°C to +55 °C
  • 14. Storage Temperature: -25 °C to +65 °C
  • 15. Reliable Test: After any following test leave speakers at room temperature for 1 hour, SPL shall not deviate by 3 db from initial value
  • 15-1.Load Test: white | noise for 24 hours at 30m W input power.
  • 15-2.High Temperature Test: +65±2 °C 8 hours
  • 15-3.Low Temperature Test: -25±2 °C 8 hours
  • 15-4.Humidity Test: +40±2 °C relative humidity 90~95%R.H 8hours
  • 15-5.Vibration Test: Frequency 30 15 Hz, Amplitude 1.5 mm for 2 Hours per axis(x. y. z axis)
  • 15-6.Drop Test: 75 CM free falling on Concrete floor, 10 times.
  • 15-7.Temperature Cycle test: -20°C~ + 55 °C | 5 Cycles Temperature test.
  • 18.Measurement Method Fig(2).
  • 16. Drawing(Fig1) Unit: mm Tolerance:±0.3mm
  • 17. Speaker Construction
# Part Name Material QTY
1 Terminal FR-4 1
2 Frame ABS 1
3 Yoke SPCC 1
4 Magnet Nd-Fe-B 1
5 Washer SPCC 1
6 Voice coil COPPER 1
7 Cloth CLOTH 1
8 Cover ABS 1
9 Diaphragm MYLAR 1
  • 19. Test baffle Diagram
  • 22. Measurement Method Fig(3).
  • 24. Frequency ResonancFig(3).
  • 20. Frequency Resonance Fig (3).
  • 21. Measurement Method Fig(2).
  • 23. Test baffle Diagram

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