Harman-Kardon AVR4500 owner manual System Configuration, Night Mode Settings

System Configuration

2.Measure the distance from the listening/ view- ing position to the surround speakers.

3.Subtract the distance to the surround speakers from the distance to the front speakers and mul- tiply the result by 3.

The optimal delay time is the result of that sub- traction. For example, if the front speakers are 3 m away and the surround speakers are 1 m away, the optimal delay time is figured as (3–1)x3=6. Thus, in this example, the delay time for Dolby Digital should be set at six milliseconds.

NOTE: The DTS, Logic 7, 5/7CH Stereo, Hall and Theater modes use a fixed, nonadjustable delay time.

The Dolby Digital Mode also includes a separate setting for the center channel delay mode, since the discrete nature of these signals makes the location of the center channel speaker more criti- cal. 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 reposition the speakers by mov- ing 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 milli-sec- ond of center channel delay for every 30 cm clos- er to the listening position the center speaker is than the front speakers. For example, if the front left and front right speakers are each 3 m from the listening position and the center channel speaker is 2.4 m away, the delay is figured as

300 cm –240 cm=60 cm, suggesting an optimal center delay of 2 milliseconds.

To set the delay time, continue within the MASTER MENU (Figure 1). If the system is not already at that point, press the OSD button Lto bring up the master menu.To make the delay settings for the Dolby Digital mode (this will include the Center delay setting, and the sur- round delay for the Pro Logic mode will be set automatically), press the Set Fbutton and select any input now that is associated with a digital input and the Dolby Digital surround mode (the surround mode associated with each input selected will be indicated by the Surround Mode Indicators ˘ in the front panel), then return to the master menu. Press the ¤ Button Dthree times or until the on-screen › cursor is pointing at the DELAYADJUST line. Press the Set Button Fto call up the menu.

* * D E L A Y A D J U S T * *

C E N T E R D E L A Y : 5 M S

S U R R	D E L A Y :	1 0 M S
B A C K	T O M A S T E R M E N U

Figure 6

As the Dolby Digital mode is selected, the CENTER DELAY line is where the first adjustment is made. Now press the ‹/› Buttons

Euntil the number calculated using the formula shown above for the center speaker appears in the display. When the CENTER DELAY is entered, press the ¤ Button D once to move to the next line.

Now the › cursor will be at the SURR DELAY line so that the delay for the surround speakers may be set. Press the ‹/› Buttons

Euntil the number calculated using the formula for the surround speakers shown above appears in the display. When the delay settings are complete, press the ¤ Button n once so that the cursor is next to the BACK TO MASTER MENU line and press the Set Button p to return to the MASTER menu.

Note that the delay settings may also be adjusted at any time when the Dolby Digital or Dolby Pro Logic II modes are in use by pressing the Delay button on the remote . Then press the ⁄/¤ Dbuttons on the remote to select the Center or Rear channels for adjustment, followed by a press of the Set button F. Next, press the ⁄/¤ buttons Don the remote until the desired figure appears in the Main Information Display N and press the Set button p twice to confirm the setting and return to the normal display.

Night Mode Settings

The Night mode is a feature of Dolby Digital that uses special processing to preserve the dynamic range and full intelligibility of a movie sound track while reducing the peak level. This prevents abruptly loud transitions from disturbing others, without reducing the sonic impact of a digital source. Note that the Night mode is only available when the Dolby Digital surround mode is selected.

To adjust the Night mode setting from the menu press the OSD Button Lso that the MASTER menu appears. Then press the ¤ button Donce and press Set Fto select the SURROUND SETUP menu. Again press the ¤ button Donce and press Set F to select the DOLBY menu (see fig. 7).

*	*		D O L	B Y	* *
M O D E :		D	O L B	Y
		D	I G I	T A L
N I G H T :			O F F M I D M A X
B A C K T O S U R R					S E L E C T

Figure 7

To adjust the Night mode setting, make certain that the › cursor is on the NIGHT line of the DOLBY menu. Next, press ‹/› Buttons

Eto choose between the following set-

tings.

OFF: When OFF is highlighted, the Night mode will not function.

MID: When MID is in the highlighted video, a mild compression will be applied.

MAX: When MAX is in the highlighted video, a more severe compression algorithm will be applied.

When you want to use the Night mode feature, we recommend that you select the MID setting as a starting point and change to the MAX setting later, if desired.

When the setting has been made, press the

⁄/¤ buttons Dso that the › cursor is next to BACK TO SURR SELECT, and press the Set button Fto return to the SUR- ROUND SELECT menu.

Note that the Night mode may be adjusted directly any time that Dolby Digital surround mode is selected by pressing the Night button B. When the button is pressed, the words D-RANGE followed by the current setting (MID, MAX, OFF) will appear in the lower third of the video screen and in the Main Information Display Y. Press the ⁄/¤ but- tons Dwithin five seconds to select the desired setting, then press Set Fto confirm the set- ting.

SYSTEM CONFIGURATION 25