40MM Bluetooth Headphone Speaker High impedance patternless version 777 Headset Driver.
Model: 777 High Resistance Ultimate Edition.
Impedance: 260 OHM.
Rated power: 0.05 (W).
Frequency response: 718 Hz-1810 Hz.
Size : 40mm .
Shape: Round.
Magnetic circuit form: internal magnetic type.
Type: Electric type (moving coil type).
Uses: High Fidelity (Home).
Frequency characteristics: bass (low frequency).
Instructions for use:
1. After receiving the speaker, first use a multimeter to test the unit to make sure that the speaker is good. During welding, the unit is labeled positive and negative. The marked colors are positive welding positive wire, and unmarked spot welding negative.
2. The soldering iron should not be used for more than three seconds. If the soldering time is too long, it is easy to burn the voice coil leads or directly burn the circuit board, causing the speaker to short-circuit and become silent. Because the speaker is damaged after welding, the shop is not responsible for return.
Package :2 pcs .
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