11. Adjust the level of the foot nail, and then fix it with the wrench (usually attached to the equipment). Pay attention not to tighten it too tightly. For some screws with poor quality, tightening it too tightly will cause slippage.

12. Some audio lines are directional. Pay attention to plug in according to the direction indicated by the arrow on the plug, for example, the signal input power amplifier of the CD player and the signal input speaker of the power amplifier.

13. Screw in the cross screw on the wood floor first, and then insert the foot nail on the screw. Pay attention to adjust the level.

14. Many sound systems, whether installed on the ground or on shelves, benefit from a stable ground.

15. Whether the small speaker is installed on the shelf with foot nail or damping glue, it is better to follow the manufacturer's suggestions, but it can be tested first.

16. If you want to install the speaker on the wall, the wall must be stable, and the position of the treble unit should be the same as that of your ears when you listen to the sound.

17. Do not put potted plants, lamps or porcelain statues on the speakers. Some of them may vibrate with the music and be distracting.

18. If the speaker is too close to the wall indoors, it will make the bass insufficient. If it is outdoors, it will make the bass too heavy. In any case, don't put the speaker in the corner, it will make the bass turbid.

19. A general rule is that the distance between speakers should not be greater than the distance between speakers and listeners. But most speakers need a distance of at least 1.5-2 meters to produce a good sound image position. If the distance is too far, it will produce a hollow effect.

20. Adjust the direction of the speaker until the sound image is three-dimensional. The vertical line from the front panel of the two speakers should cross at the place where you listen.