I want to install ceiling speakers on the ceiling at home, and the amplifier has been bought, and I

It's a horn with two wires. When all electrical appliances are working, they need a loop with current circulation to work.

Generally not, unless you are driving very loudly and the accent is very high. If you are afraid of noise, install soundproofing equipment.

It is the change of temperature and humidity that affects the material, and the sound made when the material expands and contracts coldly. The ceiling keel is affected by moisture in life, and the increase in water content leads to bulging, or because when the material is used, the wood itself has a high water content, and it has been under the influence of the arid climate for a long time, resulting in the shrinkage of the ceiling wooden keel, which will also lead to inexplicable problems in the ceiling, mainly because of the choice of materials, which is very common in many old Chinese houses, so it is more recommended to use the steel structure as the support of the ceiling.

Install the sofa above the coffee table is a little smaller, according to the length and width of your house should be installed 800mm diameter lamp is more appropriate, customer service recommendation is right. >>>More

The small sound compartment on the ceiling can be adjusted as follows; >>>More