System Configuration
for each channel to begin to bring them to3.Subtract the distance to the surround speak-
the same level. Note that when one of theers from the distance to the front speakers.
C
LRbuttons is pushed, the test noise circula-a. When setting the delay time for the
tion will pause on the channel being
Dolby Digital surround modes, the opti-
adjusted to give you time to make themal delay time is the result of that sub-
adjustment. When you release the button,traction. For example, if the front speak-
the circulation will resume after 15 seconds.
ers are ten feet away and the surroundSLSR
LFE5.Continue to adjust the individual speakersspeakers are five feet away, the optimal
until they all have the same volume. Notedelay time is figured as 10�5=5. Thus, in
that adjustments should be made with thethis example, the delay time for Dolby
/ Buttons mq on the remote orDigital should be set at five milliseconds.
To adjust and calibrate the output levels, follow
these steps. For accurate calibration, it is athe Selector Buttons 5 on the frontb. When setting the delay time for the
panel only, NOT the main volume controls.
good idea to make these adjustments whilePro Logic II mode, take the result of the
seated in your favorite listening position:Then press the Set Button o 21 tosubtraction and add 15 to obtain the
memorize the change. If you are using aoptimal delay time. For example, if the
1.Put the AVR 120 in the Dolby Pro Logic IIsound pressure (SPL) meter for precise
mode by pressing Surround Modelevel adjustment, set the volume so thatfront speakers are ten feet away and the
surround speakers are five feet away, the
Selector 7 on the front panel, or bythe meter reads 75dB, C-Weighting Slow.
pressing the Surround Mode Selectoroptimal delay time is figured as
NOTE: The subwoofer output level is not10�5+15=20. Thus, in this example, the
j on the remote, until PRO LOGICadjustable using the test tone. To changePro Logic delay should be set at twenty
II scrolls across the Main Information
Display F and the Pro Logic IIthe subwoofer level, follow the steps formilliseconds.
Output Level Trim Adjustment on page 26.
Indicators D29 light.NOTE: The Theater and Hall modes use a fixed,
6.When you have adjusted the output sononadjustable delay time.
2.Press the Test Button h on the remote.that all channels have the same level,
T-T FL 0dB will appear in the MainThe Dolby Digital mode also includes a separate
Information Display F and the letterspress the Test Button h on the remotesetting for the center-channel delay mode, since
to complete the adjustment.
FL will flash once each second.the discrete nature of these signals makes the
Delay Settingslocation of the center-channel speaker more
3.The test noise will immediately begin to
circulate among the speakers in a clock-Due to the different distances between thecritical. To calculate the delay for the center
wise rotation, pausing at each position forfront-channel speakers and the listening posi-channel, measure the distance from the pre-
ferred listening position in the center of the
three seconds. As the test noise rotates,tion compared to the surround speakers and
the speaker position will be shown in thethe listening position, the amount of time itroom to both the center-channel speaker and
takes for sound to reach your ears from theeither the left or right speaker.
Main Information Display F.
NOTE: This is a good time to verify thatfront or surround speakers may differ. You mayIf the distances are equal, no further adjust-
compensate for this difference through the usement is required and the center delay should be
the speakers have been properly connect-of the delay settings to adjust the timing to set to zero. If the distance to the front speakers
ed. As the test noise circulates, listen to
tailor the specific speaker placement andis greater than the distance to the center
make certain that the sound comes fromacoustic conditions in your listening room orspeaker, you may wish to reposition the speak-
the speaker position shown in the Main
Information Display. If the sound from ahome theater.ers by moving the front-left and front-right
speakers closer to the listening position or the
speaker location does NOT match the posi-The factory setting is appropriate for most
tion indicated in the display, turn therooms, but some installations create an uncom-center speaker further away from the listening
mon distance between the front and surroundposition.
AVR 120 off using the Main Power
Switch 1 and check the speaker wiringspeakers that may cause the arrival of front-If repositioning of the speakers is not possible,
to make certain that each speaker is con-channel sounds to become disconnected fromadjust the center delay time, adding one mil-
surround-channel sounds.
nected to the correct output terminal.lisecond of center-channel delay for every foot
closer to the listening position the center
4.After checking for speaker placement, letTo resynchronize the front and surround chan-
the test noise circulate, and listen to seenels, follow these steps:speaker is than the front speaker. For example,
which channels sound louder than the oth-1.Measure the distance from the listening/if the front-left and front-right speakers are
each 10 feet from the listening position and the
ers. Using the front left (FL in the display)viewing position to the front speakers.
speaker as a reference, press the /center-channel speaker is 8 feet away, the delay
2.Measure the distance from the listening/is figured as 10�8=2, suggesting an optimal
Buttons mq on the remote or theviewing position to the surround speakers.center delay of 2 milliseconds.
Selector Buttons 5 on the front panel
19 SYSTEM CONFIGURATION |
ACEC
