Solid wood is very natural. Wood that has not been glued, laminated and treated by modern technology is called solid wood. The simplest explanation is the trees cut down in the forest. In fact, the so-called solid wood that we usually decorate or contact in the furniture market is the furniture made of this natural tree.
High density fiberboard is suitable for solid wood speakers. High density fiberboard has uniform density and low vibration point, which makes it more suitable for speakers than ordinary logs. There are also high-end production ratios abroad, such as polymer materials in Sweden and high-pitched throats made of plexiglass in Britain. The thickness of the circuit board is related to the size and power of the woofer you use, and the front and rear panels are usually thicker.
loudspeaker
A sound box usually consists of a speaker, a frequency divider, a box, sound-absorbing materials, etc. In the daily use of computers, we often encounter a small trouble, that is, the computer has no sound. Many friends may have encountered the sudden silence of the computer stereo, whether it is plugging in headphones, restarting or debugging the device manager.
The reason why there is no sound in the stereo
1, the speaker wiring is broken or the frequency divider is abnormal.
After the speaker is disconnected, the speaker unit has no excitation voltage, which will cause mute failure. Generally, the frequency divider is not easy to break down, but there may be faults such as lead joint desoldering and capacitor short circuit of the frequency divider.
2. The voice coil is damaged
Use multimeter R× 1 If the resistance value is ∞, scrape off the sealing paint of the leads at both ends of the voice coil with a knife, and then measure after exposing the bare copper wire. If it still doesn't work, it means that the voice coil is disconnected internally. If it has been connected, there is a "click" sound, which means that the lead of the voice coil is open. You can weld the lead, and then weld a section of enameled wire similar to the voice coil winding.
3. The speaker lead is broken.
Because the horn cone vibrates frequently, the braided wire is easy to break, and sometimes it breaks, but the cotton core wire remains connected. This kind of braided wire is not easy to buy. You can use a slightly longer cord instead.