SYSTEM CONFIGURATION
When all audio, video and system connections have been made, there are a few configuration adjustments that must be made. A few minutes spent to correctly configure and calibrate the unit will greatly add to your listening experience. Speaker Selection and Placement The placement of speakers in a multichannel home theater system can have a noticeable impact on the quality of sound reproduced. No matter which type or brand of speakers is used, the same model or brand of speaker should be used for the left front, center and right front speakers. This creates a seamless front soundstage and eliminates the possibility of distracting sonic disturbances that occur when a sound moves across mismatched front-channel speakers. Speaker Placement 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 24" above or below the tweeter in the center channel speaker. 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 left front and right front 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, and that sounds from all speakers appear to arrive at the listening position at the same time (without delay from the center speaker compared to the left and right speakers). Surround speakers should be placed on the side walls of the room, at or slightly behind the listening position. The center of the speaker should face into the room. The speakers should be located so that the bottom of the cabinet is at least two feet higher than the listeners� ears when the listeners are seated in the desired area. If side-wall mounting is not practical, the speakers may be placed on a rear wall, behind the listening C) Optimal placement of surround speaker
Center Front Speaker
No more than 24"
position. Again, they should be located so that the bottom of the cabinet is at least two feet higher than the listeners� ears. The speakers should be no more than six feet behind the rear of the seating area. Subwoofers produce 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 six inches from a wall, or near the front corner of the room. Another method is to temporarily place the subwoofer at your normal listening position, 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 instructions of the subwoofer�s manufacturer, or you may wish to experiment with the best location for a subwoofer in your listening room. Once the speakers have been placed in the room and connected, the remaining steps in the setup process are to program the AVR 125�s bass management system for the type of speakers used in your system, calibrate the output levels, and set the delay times used by the surround sound processor.
Left Front Speaker
Right Front Speaker
A) Front-Channel Speaker Installation with DirectView TV Sets or Rear-Screen Projectors
TV or Projection Screen
Left Front Speaker
Center Front Speaker
Right Front Speaker
No more than 6 feet when rear-mounted speakers are used Optional Rear-Wall Mounting
You are now ready to power up the AVR 125 to begin these final adjustments. 1. Plug the Power Cord � into an unswitched AC outlet. 2. Press the Main Power Switch 1 in until it latches and the word �OFF� on the top of the switch disappears inside the front panel. Note that the Power Indicator 3 will turn amber, indicating that the unit is in the Standby mode. 3. Remove the protective plastic film from the frontpanel lens. If left in place, the film may affect the performance of your remote control. 4. Install the three supplied AAA batteries in the remote as shown. Be certain to follow the (+) and (�) polarity indicators that are on the bottom of the battery compartment.
B) The distance between the left and right speakers should be equal to the distance from the seating position to the viewing screen. You may also experiment with placing the left and right speakers slightly forward of the center speaker.
