Nine speakers and one subwoofer result in a sound quality comparable to what you'd find in an actual cinema with Dolby 9.1 surround, which employs two front height channels. Every speaker has a different purpose in the set. After figuring out what each speaker's role is, decide on the angle and position you'd like to try for your Dolby 9.1 surround speakers. When the listener is seated, the speakers should be at or near an ear-level position.
Create a clear path between the speakers and the listener. If you position any speaker behind a chair, table, desk or cabinet, that clear path is blocked, and the sound will be also. Adjust and reposition speakers so you can figure out how to maximize sound production. Bare walls and floors can adversely affect the balance of sound coming from the Dolby 9.1 surround system. Placing speakers in a room with carpeted floors and covered walls is a better option to achieve desired balance.