GB61You can customize the sound to best fit the specific acoustics of theroom by adding a delay to the sound from the center and surroundspeakers.The delay time is initially set to 0 ms. You can enjoy the best sound during 5.1 channel surroundplayback if the distance between you and each speaker is thesame. You can adjust the delay time for the center and surroundspeakers according to the placement of the speakers in theroom. For the center speakerIf the distance of Dc is equal to or longer than the distance ofDf, set the delay time to 0 ms.Otherwise, change the value according to the table.(A)=Df-Dc For the surround speakersIf the distance of Df is equal to the distance of Ds, set the delaytime to0 ms.Otherwise, change the value according to the table shown onthe right.(B)=Df-Ds1 Center speakerPlace the speaker directly over or under the TV. But, ideally, thecenter speaker should be positioned with the top surface flushwith the front speakers..2 Front speakersPlace the front speakers so that their tweeters (high-range) arealigned at about the same height as ear level and at a horizontalangle of 45° with respect to the prime listening position.3 Surround speakersPlace these speakers behind your listening position, facing slightlyinwards, about 2 to 3 feet (60 to 90 cm) above ear level.If there isn't enough space behind the listening position (i.e., closeto the wall), place the surround speakers at either side with theirfront surfaces facing each other.4 SubwooferThe position or orientation of the subwoofer is not as critical.Place it anywhere you want.Speaker setup1 Open “MAIN MENU”With the DVD in stop mode, press the MENU button.2 Select “DVD”Using the ,❷ and ➛ , ❿ buttons, move the selection cursorto “DVD Setup”, then press ENTER to select.3 Select “Audio Options”Move the selection bar to “Audio Options”, then press ENTER tooptions.Setting the delay timeIdeal speaker placementIdeal speakerplacementIdeal speaker placement(A) Distance (feet/inch) Value (ms)0.00 0.001.12 13.382.23 26.773.34 40.154.46 53.545.58 66.93(B) Distance (feet/inch) Value (ms)0.00 0.003.35 40.156.69 80.3110.03 120.4713.39 160.6216.73 200.79