Bedienungsanleitung NAD M17 AV (Seite 20 von 38) (Englisch)

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SPEAKER CONFIGURATION

Every surround-sound system requires “bass-management” to direct low-

frequency content from any or all channels to the speakers best able to

reproduce it. For this function to operate correctly, it is important that you

correctly identify your speakers’ capabilities. We use the terms “Small” and

“Large” (and “O”) but note that physical size may be irrelevant.

• A “Small” speaker is any model, regardless of physical size, that lacks

signicant deep-bass response, that is, below about 200 Hz.

• A “Large” speaker is any full-range model; that is, one with deep-bass

response

• An “O” speaker is one that is not present in your system. For example,

you might not have any surround-back speakers installed; in that case,

you would set the “Surround” setup item to “O”.

The Speaker Conguration is “global”; that is, it remains in force with all

input and listening modes. However, speaker settings are part of the M17’s

Preset system. Consequently, multiple speaker settings can be stored for

easy recall as dierent types of recordings or listening modes require.

Speaker Conguration can be managed and adjusted by pressing

a combination of [E] and then [R/T] keys. Set “Front”, “Center” and

“Surround” to “Large”, “Small”(40Hz to 200Hz) or “O” as your subsystem’s

speakers require.

The “Back” speakers can either be one or two speakers. Set “Back” to either

1 or 2 speakers as per availability. Set “Subwoofer” to “On” or “O” selecting

“On” only if you have a subwoofer connected to the M17’s SUBW1 or SUBW2

output jack. If “Subwoofer” is set to “O”, “Front” speakers will automatically

be set to “Large”.

ENHANCED BASS

When the subwoofer is set to “On” and “Front” is set to “Large”, the option

“Enhanced Bass” becomes available. Normally, with speakers set to “Large”

the subwoofer is not active. The Enhanced Bass option allows full range

operation of the speakers with the additional bass contribution of the

subwoofer. This feature is particularly useful when one wants to experience

maximum bass output. Please note that due to acoustic cancellation

eects, the bass response may be uneven when using this setting.

You can set Subwoofer to “On” even with “Large” front speakers, in which

case bass content from any channels set to “Small” will be routed to both

the subwoofer and to the front speakers; LFE-channel signal will pass only

to the sub. In most subwoofer-equipped systems, setting front speakers to

“Small” is usually the better option.

All the speakers’ low frequency content can be directly adjusted within the

range 40Hz to 200Hz.

NOTE

The congurations set forth at ‘Speaker Setup’ are carried over whenever

it is enabled during A/V Preset setting. Please see also the section “AV

Presets” for reference.

SPEAKER LEVELS

Adjusting the relative balance of your system’s loudspeakers ensures that

surround-sound recordings, whether music or lm, will present the balance

of eects, music, and dialog that the artists intended. Additionally, if your

system incorporates a subwoofer it establishes a correct relationship

between the volume of the subwoofer and the other speakers, and thus of

low-frequencies (bass) to other sonic elements.

USING AN SPL METER

It is quite practical to perform the M17 level setup routines “by ear,” and

careful work will produce acceptably accurate results. However, the use

of an inexpensive sound-pressure level (SPL) meter, such as Radio Shack

part number 33-2050, makes this task easier, more accurate and more

repeatable. Ownership of such a meter could prove a valuable audio tool.

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.

OPERATION

USING THE M17  SETUP MENU

ENGLISH FRANÇAIS ESPAÑOL ITALIANO DEUTSCH NEDERLANDS SVENSKA РУССКИЙ

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