Harman-Kardon AVR 125 Stereo System User Manual


 
SYSTEM CONFIGURATION 19
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 IIMOVIE
scrolls across the Main Information Display F
and the Pro Logic II Indicators D 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 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.
Delay Settings
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 on the remote
or front panel. The words
SR DELAY will
appear in the
Main Information Display F.
3. Press the
Set Button o
.
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 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.
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SYSTEM CONFIGURATION