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Anonymous users2024-01-243C is the national compulsory certification for electrical appliances, and the sofa is not considered an electrical appliance.
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Anonymous users2024-01-233C is for Chinese electronic products, foreign is CE certification!
And it is mandatory、If there is no certification, the product cannot be sold!
Such as: Beverage Certification QS
Sofa additionally quality standard!
Speakers, amplifiers, and speakers all have 3C certification, but sofas do not.
Ceiling Horn: + Termination 5W – Termination Black.
The cable plug connected to the computer should be AUX IN input, OUT is the output power amplifier: + terminated 100V, -terminated COM >>>More
The squeak of the horn of the power amplifier is due to the excessive current and squeak, whether the ballast is not working well, or whether the horn membrane is damaged, or the vibration frequency of the horn is too small.
This kind of constant pressure power amplifier (high impedance power amplifier, speaker), when the ceiling is suspended, the speaker wiring and horn (this kind of speaker is special). Consider the arrangement (number) of the horns first, and then run the cables. If you are not familiar with it, please ask a friend who understands this aspect to provide on-site guidance, which is more reliable.
10 inch Huiwei is better. The rated power is 150W, and it is OK to match it with a 150W power amplifier. >>>More