Delay Settings

SYSTEM CONFIGURATION

1.Put the AVR 125 in the Dolby Pro Logic II mode by pressing the Surround Mode Selector 7 on the front panel, or by pressing the Surround Mode Selector j on the remote, until

DOLBY PRO LOGIC II–MOVIE scrolls across the Main Information Display F and the Pro Logic II Indicators D 29 light. Output level adjustment using the test tone is not available in the Stereo modes. However, in the Stereo-Digital mode, you may trim the output levels using program material, as described on page 25.

2.Press the Test Button h on the remote. TEST FL 0dB will appear in the Main Information Display F and the letters FL will flash once each second.

3.The test noise will immediately begin to circulate among the speakers in a clockwise rotation, pausing at each position for three seconds. As the test noise rotates, the speaker position will be shown in the Main Information Display F.

NOTE: This is a good time to verify that the speakers have been properly connected. As the test noise circulates, listen to make certain that the sound comes from the speaker position shown in the Main Information Display. If the sound from a speaker location does NOT match the position indicated in the display, turn the AVR 125 off using the Main Power Switch 1 and check the speaker wiring to make certain that each speaker is connected to the correct output terminal.

4.After checking for speaker placement, let the test noise circulate, and listen to see which channels sound louder than the others. Using the front left (FL in the display) speaker as a reference, press the ▲/▼ Buttons mq on the remote or the Selector Buttons 5 on the front panel for each channel to begin to bring them to the same level. Note that when one of the but- tons is pushed, the test noise circulation will pause on the channel being adjusted to give you time to make the adjustment. When you release the button, the circulation will resume after 15 seconds.

5.Continue to adjust the individual speakers until they all have the same volume. Note that adjust- ments should be made with the ▲/▼ Buttons mq on the remote or the Selector Buttons 5 on the front panel only, NOT the main volume controls. Then press the Set Button o 21 to memorize the change. If you are using a sound pressure (SPL) meter for pre- cise level adjustment, set the volume so that the meter reads 75dB, C-Weighting Slow.

NOTE: The subwoofer output level is not adjustable using the test tone. To change the subwoofer level, follow the steps for Output Level Trim Adjustment on page 25.

6.When you have adjusted the output so that all channels have the same level, press the Test Button h on the remote to complete the adjustment.

Due to the different distances between the front-chan- nel speakers and the listening position compared to the surround speakers and the listening position, the amount of time it takes for sound to reach your ears from the front or surround speakers may differ. You may compensate for this difference through the use of the delay settings to adjust the timing to tailor the spe- cific speaker placement and acoustic conditions in your listening room or home theater.

The factory setting is appropriate for most rooms, but some installations create an uncommon distance between the front and surround speakers that may cause the arrival of front-channel sounds to become disconnected from surround-channel sounds.

To resynchronize the front and surround channels, fol- low these steps:

1.Measure the distance from the listening/ viewing position to the front speakers.

2.Measure the distance from the listening/ viewing position to the surround speakers.

3.Subtract the distance to the surround speakers from the distance to the front speakers.

a.When setting the delay time for the Dolby Digital surround mode, the optimal delay time is the result of that subtraction. For example, if the front speakers are 10 feet away and the sur- round speakers are five feet away, the optimal delay time is figured as 10–5=5. Thus, in this example, the delay time for Dolby Digital should be set at five milliseconds.

b.When setting the delay time for the Pro Logic II modes, take the result of the subtraction and add 15 to obtain the optimal delay time. For example, if the front speakers are 10 feet away and the surround speakers are five feet away, the optimal delay time is figured as 10–5+15=20. Thus, in this example, the Pro Logic II delay should be set at 20 milli- seconds.

NOTE: The Theater and Hall modes use a fixed, non- adjustable delay time.

The Dolby Digital mode also includes a separate set- ting for the center channel delay mode, since the dis- crete nature of these signals makes the location of the center channel speaker more critical. To calculate the

delay for the center channel, measure the distance from the preferred listening position in the center of the room to both the center channel speaker and either the left or right speaker.

If the distances are equal, no further adjustment is required and the center delay should be set to zero. If the distance to the front speakers is greater than the distance to the center speaker, you may wish to repo- sition the speakers by moving the front-left and front- right speakers closer to the listening position or the center speaker further away from the listening position.

If repositioning of the speakers is not possible, adjust the center delay time, adding one millisecond of center channel delay for every foot closer to the listening position the center speaker is than the front speaker. For example, if the front-left and front-right speakers are each 10 feet from the listening position and the center channel speaker is eight feet away, the delay is figured as 10–8=2, suggesting an optimal center delay of two milliseconds.

To set the delay times, follow these steps:

1.Put the AVR 125 in the Dolby Pro Logic II – Movies mode by pressing the Surround Mode Selector 7 on the front panel or by pressing the Surround Mode Selector j on the remote, until DOLBY PRO LOGIC II – MOVIE appears in the Main Information Display F and the Pro Logic II Indicator D lights up.

2.Press the Delay Button 29 23 on the remote or front panel. The words SR DELAY will appear in the Main Information Display F.

3.Press the Set Button o 21 .

4.Adjust the delay time by pressing the ▲/▼ Buttons mq on the remote or the Selector Buttons 5 on the front panel until the delay time figure calculated using the formula entered above appears in the display.

5.If only analog sources will be used, no adjustment is needed for the center channel delay. In that case, press the Set Button o 21 to enter the surround delay settings into the AVR 125’s mem- ory. However, if you will be using digital sources and the calculations outlined above indicate that the center channel delay requires an adjustment, continue with the following steps.

6.Before setting the center channel delay time, make certain that a digital source has been selected.

7.Select the Dolby Digital mode by pressing either the Surround Mode Selector 7 on the front panel or the Surround Mode Selector j on the remote, until DOLBY DIGITAL appears in the Main Information Display F.

SYSTEM CONFIGURATION 19