Not included installation instruction ,tools or adhesive, Professional technician is needed for installation. We won’t responsible for any damage due to improper operation.
HIFI 40MM 32 OHM Headphone Speaker Unit Gold-Plating Film High Magnetic Full Range Headset Speaker .
Compatible With:For Audio-Technica ATH-M20x ATH-M30x ATH-M40x Headphone DIY Replacement Speaker Driver Unit
Impedance : 32 OHM .
Rated power : 0.5W .
Frequency response : 20-20000 kHz .
Sensitivity : 111 (dB/W) .
Harmonic distortion : 2 (TMD%) .
Frequency characteristics: full frequency band (full range).
Diaphragm: Gold-Plating Film .
Uses: headphone sound unit DIY .
Directivity :Red dot is positive .
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