NAD T 751751 owner manual Setting UP the Surround System, Speaker Settings

woofer. This preset is particularly useful for large rooms.

Preset 2:

Main - LARGE; Center - SMALL; Surround -

SMALL; Subwoofer - OFF

This preset is necessary for a home theater system that does not have a subwoofer. The bass frequen- cies from the center and surround channels are redi- rected to the main speakers.

Preset 3:

Main - SMALL; Center - SMALL; Surround -

SMALL; Subwoofer - ON

This preset is ideal for those systems using 5 small speakers combined with a subwoofer. The bass fre- quencies from each of these 5 channels are redirect- ed to the subwoofer.

NOTES:

Regardless of the available main speakers, select Preset 2 when subwoofer is not available to redirect bass frequencies to the main speakers.

SETTING UP THE SURROUND SYSTEM.

To obtain the best results in any of the Surround Modes it is important that the T 751 is carefully set up. Performing the complete setup is done using the On Screen Display menus. It is therefore recom- mended you connect your Television or monitor to the T 751 monitor output.

Refer to the chapter “On Screen Display (OSD)” on how to access the SETUP Menu of the On Screen Display, choose sub-menus and change settings.

The setup procedure is broken down in three sec- tions:

1.Speaker Settings

2.Channel Balance

3.Channel Delays

Speaker Settings:

First you need to indicate which speakers are con- nected to your T 751. Besides the Main speakers (Left & Right), these can include a Center, two Surround Speakers and a Subwoofer.

•Call up the SETUP menu of the On Screen Display (Fig. 7)

•Select the SPEAKER SETTINGS (Fig. 11)

•Highlight PRESET and use 1 or 2 cursor button to select the preset (PRESET 1, 2 or 3) that best applies to current setting or change the speaker fields individually as desired.

Four modes available appropriate to the T 751’s setup: LARGE or SMALL and ON or OFF.

The LARGE mode is used when the speaker is full

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range and capable of reproducing the entire audible frequency spectrum 20Hz to 20kHz. The SMALL mode is used when the speaker is not capable of reproducing the deepest bass portion of the audio fre- quency 20Hz to 100Hz.

The ON mode is used when the speaker is active and receives the audio information intended. The OFF mode is used when the speaker is inactive. Audio signals intended for speakers set to the OFF position are redirected to the main speakers.

T 751 comes with 3 factory presets for typical Home Theater systems and ease installation. Refer also to chapter “On Screen Display” section 4 for more information.

Using a separate center channel speaker will allow the dialogue to cut through even the biggest sound effects and musical scores. Having the sound spread across three front speakers also stabilizes the stereo image, making the usable listening area much bigger.

For best results, you should consider using a cen- ter speaker. Ideally it should be the same type as the left and right speakers.

•Choose SURROUND and select one of the three modes available: Small, Large, Off.

Installing surround speakers will greatly enhance the surround experience as these add considerably to the overall “ambience”.

Dolby Pro Logic encoded material is deliberately limited in dynamic range and frequency bandwidth for the surround channel and thus only requires speak- ers of far lesser specification compared to the front channels. Dolby Digital however is a full range sys- tem, with two independent surround channels and with dynamics equal to that of the front channels. For this reason it is advisable to choose loudspeakers which are similar in power handling and performance capability to those of the front channels.

For best results, the Surround loudspeakers should not beam the sound directly at the listener. One way of achieving this is to use ‘dipole’ Surround speakers which aim the sound down the walls rather than directly into the room.

Many film soundtracks rely heavily on very low fre- quency sound effects which are difficult for normal or smaller hi-fi speakers to reproduce. To faithfully reproduce these low frequencies you can use a spe- cially designed low frequency loudspeaker with its own built-in amplifier (“active subwoofer”). Because it is difficult to hear which direction very low frequencies are coming from, you only normally need one sub- woofer and this can be placed virtually anywhere in the room. The Subwoofer output of the T 751 is designed specifically to drive a subwoofer system.

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