NAD T775 Speaker Distance, Adjusting the Volume, Adjusting Channel Levels ‘On the Fly’

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USING THE T 775 – SETUP MENU

To produce the same SPL meter reading (or subjective loudness), use the remote’skeys to adjust each speaker.

Note

•All speakers must be in their final locations before level-setting.

•Your subwoofer (if any) should be set with its integral crossover defeated, or if undefeatable, set to its highest-possible frequency if you are using the T 775's Subwoofer output. Final subwoofer-level adjustment “by-ear,” using music and film sound material, is frequently useful.

•Due to the effects of room acoustics, matched-pair speakers (front; surround; back) will not always calibrate to exactly the same level offset readings.

You can exit ‘Test’ mode at any time by pressingkey, bringing you back to ‘Speaker Setup’ menu. You can also press the ‘TEST’ key to discontinue the ‘Test’ mode.

Speaker Distance

Your system’s speaker distance settings are a subtle but important refinement of your setup. Informing the T 775 of the loudspeaker-to-listener dimensions of each speaker automatically imposes the correct delays, optimizing imaging, intelligibility and surround-sound ambience. Enter your dimensions with precision within about 1 foot (30 cm).

Setting Speaker Distance

While at ‘Speaker Distance’ menu, use thekeys to individually set Front Left, Center, Front Right, Surround Right, Back, Surround Left and Subwoofer to the distance measuring from your principal listening position to the front surface of their corresponding loudspeakers. Distance can be set up to 30 feet or 9.1 meters Distance can be displayed as feet or meters selectable at the ‘Unit of Measure’ item.

Adjusting the Volume

In addition to the Volume knob, use the HTR 3’s VOLto adjust the“master volume” of the T 775 raising or lowering the channels altogether. A momentary keypress will change the master volume by 1 dB

increments. If you hold down VOL, the master-volume change will“run-on” until the key is released. Since recordings vary considerably in overall average level, there is no imperative to listen at any particular master-volume setting. A setting of -20 may sound “as loud” from one CD or DVD as -10 does from another.

The T 775 will power-up from Standby mode at whatever master volume setting was last used; however, if the prior setting was greater than –20 dB, the T 775 will power up at –20 dB. This prevents inadvertently beginning a session at excessive volume.

MUTING THE SOUND

Use the HTR 3’s ‘Mute’ key to silence all channels completely. Muting is always available regardless of the source or listening mode selections.

Note

•Changing input or listening-mode selections does not release muting.

•Adjusting the master-volume upward via the HTR 3 or the front-panel knob automatically releases the mute function.

•The T 775’s OSD will show the Master volume setting as a line graphic with a numeric display in dB relative to the reference level.

Adjusting Channel Levels ‘On the Fly’

You can make changes to the relative levels of center, surround and subwoofer outputs without having to go into the ‘Speaker Levels’ menu. This is very convenient in circumstances like increasing (or tone down) a film’s dialog level by raising (lowering) the center channel or reducing excessive deep bass (or enhance deep bass) by lowering (raising) the subwoofer level.

Use the HTR 3’s ’SURR,’‘CENT’ and ‘SUB’ keys for direct-access level adjustment of these channels over a range of ±6 dB.

The surround back channels (if any) adjust in lockstep with the surround channels.

Note

Level settings adjusted ‘On the Fly’ are added or subtracted to the setup levels established at the

T 775 level-calibration routine as invoked by the HTR 3 ‘Test’ key. However, selecting any Preset will revert the channel levels to those stored in the preset. It will also take T 775 off the levels set via Audyssey calibration.

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