Let's take a look at the subwoofer placement. Because the human ear is not sensitive to the direction of the bass, so it can be placed in the corner. But at this point, two things must be noted:
One, subwoofer absolutely can not be put on the object that forms resonance easily, for example the weight is very light computer desk. Once this is done, the table vibrates as the subwoofer works, which has a significant effect on the sound quality;
Two, the rear of the subwoofer must not be close to the wall. This is because a lot of subwoofers are designed after the reverse phase. And after the inverted hole, if there is no certain distance, you can not play the bass. Therefore, there should be at least some distance from the wall.