System Configuration

Sub Mode Setting

When the Front Left/Right speakers are con- figured as “Large” and a subwoofer is detected by EzSet/EQ or manually configured as being available, additional options are available to further customize bass redirection. To change these settings, first make sure that the SPEAKER SIZE menu (Figure 19) is on the screen, and then press the /¤ Navigation Button E so that the cursor is pointing to SUB MODE. Press the /Navigation Button E to begin the selection process, and note that the warning message (Figure 20) will appear reminding you to rerun EzSet/EQ after all changes have been made.

The following options are available:

The default setting for Large front left/right speakers when a subwoofer is present is SUB L/R + LFE. In this mode, all sounds below the crossover point set on the LFE LP FLT line will be sent to BOTH the subwoofer and the front left/right speakers.

To send only the LFE channel information to the subwoofer, but have all other (“derived”) low-frequency sounds sent to the front left/right speakers, select the SUB (LFE) setting.

To have low-frequency information sent to the subwoofer only when Large speakers are selected, choose SUB (L/R). This option is only available when the unit is set to SURROUND OFF so that a pure analog audio path is provided.

When no subwoofer is present and Large speakers are configured for the front left/right position, select NONE. This will route all low- frequency information to the front left/right speakers.

When the SPEAKER SIZE menu returns to the screen, replacing the warning message, press the /Navigation Button E to make your selection. When the desired setting appears, press the /¤ Navigation Button E to move the cursor to any other line on this menu where you wish to make a setting change, or go to the BACK TO MANUAL SETUP menu and then press the Set Button F to continue with overall configuration.

Subwoofer Size

The final setting on the SPEAKER SIZE menu enables you to change the setting for the subwoofer size. In the event that EzSet/EQ did not accurately enter the correct size, or if you wish to experiment with a different setting, first make sure that the SPEAKER SIZE menu (Figure 19) is on the screen; then press the /¤ Navigation Button E so that the cursor is pointing to SUB SIZE and then press the /Navigation Button E to begin the selection process. Note that a warning message will appear for 4 seconds to remind you to rerun EzSet/EQ after all changes have been made.

Select a setting that best matches the diameter of your subwoofer’s driver, or which provides the appropriate high-pass filter setting for your sys- tem. In each case, the frequency of the high-pass filter determines the frequencies below which no information is sent to the subwoofer:

The setting for an 8-inch/200mm driver activates a 38Hz subwoofer high-pass filter.

The setting for a 10-inch/250mm driver activates a 30Hz subwoofer high-pass filter.

The setting for a 12-inch/305mm driver activates a 20Hz subwoofer high-pass filter.

The setting for a 15-inch/380mm driver activates a 15Hz subwoofer high-pass filter.

When all changes to Speaker-related settings have been made, press the /¤ Navigation Button E until the cursor is on the BACK TO MANUAL SETUP menu and then pressing the Set Button F so that you may make any other adjustments to the system parameters. It is also important to remember to rerun the EzSet/EQ system if any changes have been made to the settings on this menu, following the instructions shown on page 33 for using the Manual mode.

The Speaker Configuration may also be changed at any time without using the full-OSD on-screen menu system by pressing the Speaker Selector

6 on the front panel or on the remote control. Once the button is pressed, FRONT SPEAKER will appear in both the lower third of the video display and the Main Information Display ˜.

Within five seconds, either press the /buttons 7 $ on the front panel or the /¤ buttons

Eon the remote to select a different speaker position, or press the Set Button @F to begin the adjustment process for the front left and right speakers.

When the Set button @ F has been pressed and the system is ready for a change to the front speaker setting, the on-screen display and Main Information Display ˜ will read FRONT LARGE or FRONT SMALL depending on the current setting. Press the /buttons 7 $ on the front panel or the /¤ buttons E on the remote until the desired setting is shown, using the instructions for “large” or “small” shown earlier, then press the Set button @F.

If another speaker position needs to be changed, press the /buttons 7 $ on the front panel or the /¤ buttons E on the remote to select a different speaker position, press the Set button @ F and then the /buttons 7 $ on the front panel or the /¤ buttons E on the remote until the correct speaker setting is shown and press the Set button @ F again to confirm the selection.

To assist in making these settings, the icons in the Speaker/Channel Input Indicators Ú will change as the speaker type is selected at each position. When only the inner icon box is lit, the speaker is set for “small.” When the inner box and the two outer boxes with circles inside them are lit, the speaker is set for “large." When no indicator appears at a speaker location, that position is set for “none” or “no” speaker.

Note: These icons are available only when making setup changes without the use of the full OSD mode.

As an example, in the Figure below, all speakers are set for “large,” and a subwoofer is set.

Delay Settings

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

34SYSTEM CONFIGURATION

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Harman-Kardon AVR 645 owner manual Sub Mode Setting, Following options are available, Subwoofer Size, Delay Settings

AVR 645 specifications

The Harman-Kardon AVR 645 is a standout receiver that appeals to audiophiles and home theater enthusiasts alike. This model is known for its rich sound quality, extensive features, and user-friendly interface, making it a solid choice for anyone looking to enhance their home entertainment experience.

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