JiaWeiHua is the leading custom headphone manufacturer in China, offers custom Bluetooth headphones and custom wired earphones. This article will explain the quality control of headphones.

1. Wear the earphone back shell + wire knotting: the key control can not have the same side (two R or L), generally the red core wire wears the R side ear shell, the green core wire or the blue core wire wears the L side ear shell, regardless of L How does the color of the side core wire change, the red core wire is fixed to the R side, not to mention the national standard, this is also an industry standard. If the R/L is reversed, for example, when we listen to a symphony, the position of the instrument is just the opposite of normal. After knotting, the ear shell wires on both sides of the R/L should be the same length, and the length of both sides should be less than or equal to 5mm. Have you paid attention to these when buying headphones?

2. Welding the horn: the red core wire, green core or blue core wire is corresponding to the horn "+" pole welding (generally horn supplier "+" is dotted), the other yellow core wire is welded "-", and the welding quality is not acceptable Cold welding, false welding, false welding, etc. If the core wire is connected reversely, the phase of the earphone will be reversed. Everyone knows that the sound of the earphone with the reversed-phase is divergent. The earphone vibrates when in use. If there is cold welding or virtual welding, it will cause poor contact or directly become silent.

3. Check the solder joints: focus on controlling the problems of reverse welding, welding quality, cold welding, and poor welding. This station can also add a multimeter to pick out the silent and poor short circuit so that the defective products will not flow into the next project. Waste of materials and man-hours.

4. Performance test: The performance test is mainly the items tested by the electro-acoustic tester and the earphone listening inspection. It can be said that these engineering stations are the most critical stations to ensure that the earphones meet the standards and are shipped to consumers. (See the content of the test items above for details)

5. Appearance inspection: focus on confirming major quality problems such as missing parts, mixed materials, and wrong materials. Of course, other appearance problems need to be checked.

These items are all necessary quality control items as a custom headphone manufacturer. Only by improving the quality of products and safeguarding the interests of customers can we better serve customers.