Speaker Selection
No matter which type or brand of speakers is used, the same model or brand of speaker should be used for the front-left, center and front-right speakers. This creates a seamless front sound- stage and eliminates the possibility of distracting sonic disturbances that occur when a sound moves across mismatched front-channel speakers.
Speaker Placement
The placement of speakers in a multichannel home-theater system can have a noticeable impact on the quality of sound reproduced.
Depending on the type of center-channel speaker in use and your viewing device, place the center speaker either directly above or below your TV, or in the center behind a perforated front-projection screen.
Once the center-channel speaker is installed, position the left-front and right-front speakers so that they are as far away from one another as the center-channel speaker is from the preferred listening position. Ideally, the front-channel speakers should be placed so that their tweeters are no more than 60cm above or below the tweeter in the center-channel speaker.
They should also be at least 0.5 meter from your TV set unless the speakers are magnetically shielded to avoid colourings on the TV screen. Note that most speakers are not shielded, even with complete surround sets only the Center speaker may be.
Depending on the specifics of your room acoustics and the type of speakers in use, you may find that imaging is improved by moving the front-left and front-right speakers slightly forward of the center-channel speaker. If possible, adjust all front loudspeakers so that they are aimed at ear height when you are seated in the listening position.
Using these guidelines, you’ll find that it takes some experimentation to find the correct location for the front speakers in your particular installation. Don’t be afraid to move things around until the system sounds correct. Optimize your speakers so that audio transitions across the front of the room sound smooth.
When the AVR is used in 5.1-channel operation, the preferred location for surround speakers is on the side walls of the room, at or slightly behind the listening position. In a 6.1-channel system, a back surround speaker is required, ideally placed at the center of the room's rear wall, pointing directly towards the front center channel speaker. The center of the speaker should face you (see below).
In a 7.1-channel system, both side surround and back surround speakers are required. The center of the speaker should face you (see below).
Rear surround speakers are required when a full 7.1-channel system is installed, and they may also be used in 5.1 channel mode as an alterna- tive mounting position when it is not practical to place the main surround speakers at the sides of the room. Speakers may be placed on a rear wall, behind the listening position. As with the side speakers, the center of the rear surrounds should face you. The speakers should be no more than 2 meters behind the rear of the seating area.
It is appropriate to configure the AVR 240 for either 5.1- or 7.1-channel operation, but not for
6.1channels. When 6.1-channel program material or a 6.1-channel processing mode is in use, material for the surround back channel will be outputted simultaneously through both the Surround Back Left and Right Speaker Outputs . Connecting only one loudspeaker to these speaker terminals will not only deprive you of the benefits of 7.1-channel surround modes, such as Logic 7, but will also interfere with the functioning of EzSet+ speaker setup and calibra- tion, as described on page 20. It may also put undesirable strain on the surround back amplifier circuits and power supplies.
Subwoofers produce largely nondirectional sound, so they may be placed almost anywhere in a room. Actual placement should be based on room size and shape and the type of subwoofer used. One method of finding the optimal location for a subwoofer is to begin by placing it in the front of the room, about 15cm from a wall, or near the front corner of the room. Another method is to temporarily place the subwoofer in the spot where you will normally sit, and then walk around the room until you find a spot where the subwoofer sounds best. Place the subwoofer in that spot. You should also follow the instruc- tions of the subwoofer’s manufacturer, or you may wish to experiment with the best location for a subwoofer in your listening room.
At least 15 cm from celling
At least 60 cm
