Handleiding NAD T 775 (pagina 23 van 46) (Engels)

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The SPL meter should be placed at the primary listening position, at

approximately the height of the seated listener’s head. A tripod is helpful

but with a little duct tape almost anything — a pole lamp, music-stand,

or ladder-backed chair, for example — can do as well. Just be sure that no

large acoustically reective surfaces obstruct or are near the microphone

element.

Orient the meter with its microphone (usually at one end) pointing straight

up toward the ceiling (not toward the speakers) and ensure that “C”

weighting scale is selected. Set the meter to display 75 dB SPL. On Radio

Shack meters, this necessitates either setting the meter to its 80 dB range

and taking your readings at the -5 point or selecting the 70 dB range and

reading at the +5 point.

SETTING SPEAKER LEVELS AT TEST MODE

While at ‘Speaker Levels’ menu, press the HTR 3 remote’s ‘Test’ key activating

the T 775’s Speaker Levels balancing test signal . You will hear a “surf” sound

as you step through your speakers (‘test’ appears to the right side of the

current speaker), beginning with the Front Left. If you do not hear the test

signal, check your speaker connections or your ‘Speaker Setup’ OSD menu

settings.

Use the remote’s keys to adjust the loudness of the noise output from

the currently playing channel to the required level (it’s usually simplest to

begin with the Front Left). As you cycle the test signal around the speakers,

the OSD will highlight the currently playing channel. The “level oset”

reading on the right will change by 1 dB increments; ±12 dB adjustment is

available. Press ‘ENTER’ to adjust the next speaker.

NOTE

 Ifyouarebalancinglevels“byear”,chooseonespeaker—usuallythe

center—asareferenceandadjusteachoftheothersinturnto“soundas

loud”asthereference.Besurethatyouremainintheprimarylistening

position while balancing all channels.

To produce the same SPL meter reading (or subjective loudness), use the remote’s

keys to adjust each speaker.

NOTES

• Allspeakersmustbeintheirnal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lmsoundmaterial,isfrequentlyuseful.

• Duetotheeectsofroomacoustics,matched-pairspeakers(front;

surround;back)willnotalwayscalibratetoexactlythesameleveloset

readings.

You can exit ‘Test’ mode at any time by pressing key, 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

renement 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 the keys to individually set Front

Left, Center, Front Right, Surround Right, Back Right, Back Left, 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 VOL to 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 dB may sound “as loud” from one CD or DVD as -10 dB 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.

OPERATION

USING THE T 775  SETUP MENU

ENGLISHFRANÇAISESPAÑOLITALIANODEUTSCHNEDERLANDSSVENSKAРУССКИЙ

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