The stereo manufacturer told you how to put the stereo
Placement of middle channel speakers
As far as possible in the front speakers are usually placed in a location near the center of the image screen. Vocal tract of speaker quality had the greatest influence of movie dialogue, in order to ensure accurate positioning dialogue in the middle of the screen and the sound is clear, should use specially designed for track of individual speakers, rather than by ordinary bookshelf speakers or internal speaker instead of TV.
Left and right channel main speakers
There is a certain relationship between the placement of these two speakers and the position of the middle channel speakers. To ensure the smoothness of the left and right movement of the sound image, they should be placed on both sides of the middle channel speaker, and the three speakers should be at the same distance from the best listener in front of the screen. Generally speaking, the placement of the speakers in the center should be compared to the left, right two speakers back a distance, until the two sound field can be completely combined together, together to create a truly unified acoustic positioning. The distance back is related to the size of the space, the listening position and the speaker used, which can be determined by experiment.
Placement of surround channel speakers
Loop speaker should put audio-visual sound environment (room) and the type of loop speakers. Left around and right surround speakers of the two channels, the diffusivity of sound should be over its orientation, create a rich atmosphere around this advantage. Dipole when the speakers are put to focus on two factors: the resonance and failure cut yourself. The best bit anti resonant is away from the ceiling (or ground) 20% of the interior space height (such as indoor height of 2.5 m, the best position for the upper and lower 50 cm). To make the frequency response smoother, a new device called a low-frequency "trap" could be added to eliminate the reflections that cause sound to decay.
Placement of subwoofer speakers
Usually the subwoofer speakers on the corner near the best more than 1 m away from the corner, which can reduce the standing wave interference. Also can put the subwoofer speakers on the best listen to both sides of the position, keep a proper distance, because the human ear for coming on both sides of the subwoofer direction is not very sensitive, so at this time subwoofer will not interfere with the front three channel original acoustic image positioning. Of course, the best placement should be to pass the test to decide.