Bedienungsanleitung NAD M 2 (Seite 7 von 14) (Englisch)

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13 MENU: Toggle to view the available options such as LEVEL TRIM and

SAMPLE RATE options for BALANCED and SINGLE-ENDED input signal

as well as selections for SPEAKER COMPENSATION and POLARITY. These

menu options are accessed by pressing the MENU button and then

rotating the VOLUME control knob clockwise or counterclockwise to

select desired level or setting. Release the VOLUME knob when you

reach your preferred level or setting. The change will take eect after a

few seconds when the display returns to show the default information

(selected input and volume setting). Press MENU button again to select

another menu option.

LEVEL TRIM: Adjust the BALANCED or SINGLE-ENDED input signal level

from -9dB to 0dB or FIXED.

-9dB to 0dB: Increase or decrease the input signal level from -9dB

to 0dB. This attenuates the signal before the Analog-to-Digital (A/D)

Converter. If the analog input signal sounds distorted, the input

should be attenuated.

NOTE

Attenuating too much can reduce the potential resolution of the A/D

Converter.

FIXED: This setting should be selected when M2 is connected

to the output of a preamplier and is used primarily as a power

amplier. Output level is xed and the M2’s Volume Control is

bypassed. Adjust the level using the source signal’s preamplier

volume or input level control.

NOTE

VOLUME control is bypassed and cannot be adjusted when LEVEL TRIM

is set to “FIXED” setting. The corresponding VOLUME level (in dB) will not

appear in the VFD; what will be shown instead is “VOL FIXED”. Set LEVEL

TRIM to any other level except “FIXED” to adjust VOLUME control to

desired level.

SAMPLE RATE (48 kHz, 96 kHz, 192 kHz): Select the user’s

preference for sample rate of the A/D Converter. Higher sampling

rates allow for anti-aliasing lters to take eect further outside the

audible frequency range and are generally considered to sound

better, especially in the high frequencies. You may need to reduce

the sampling rate if you are using the Digital Processor Loop, as many

external devices will not operate at 96 kHz or 192 kHz.

SPEAKER COMPENSATION (2 Ohms, 4 Ohms, 5 Ohms, 6 Ohms,

7 Ohms, 8 Ohms, >8 Ohms): Digital impedance compensation lter

allows ne tuning of the top octave to match the speaker impedance.

This will result in perfectly at frequency response at 20 kHz. The

eect of this lter may not be audible* but it is measurable, and it

compensates for the small eect of the digital reconstruction lter that

eliminates the 288 kHz sampling frequency of the amplier.

*The exception may be some electrostatic speakers that have very low

impedance at high frequency. The lower the HF impedance, the greater

the deviation from at response.

POLARITY (POSITIVE, REVERSED): Allow compensation for

recordings that have reversed polarity.

Positive: A positive sine wave at the input remains positive at the

output.

Reversed: A positive sine wave at the input is negative (inverted) or

reversed at the output.

IMPORTANT NOTICE

For all of the above menu options, a chosen option or level setting will

not immediately take eect upon selection. There will be a slight delay or

pause before the corresponding action or response is realized.

RENAMING A SOURCE INPUT

A particular source input can be renamed according to your preference.

You can use up to 20 characters in renaming a source input. Below is the

procedure on how to rename a source input.

Example: Rename “DIGITAL OPTICAL 1” to “BD PLAYER”.

1 Press the front panel “optical 1” button to select “DIGITAL OPTICAL

1” input. Then, press and hold the front panel “optical 1” button until

“DIGITAL OPTICAL 1” is shown in the lower section of the VFD and with

“D” ashing (Note that “DIGITAL OPTICAL 1” is also shown at upper

section of the VFD).

2 Within 5 seconds, rotate the VOLUME control knob clockwise or

counterclockwise to select the rst character (“B” from the alphabetical

list). The ranges of characters available are 0-9, _ (space) and A-Z.

3 Press the front panel “loop” button to select the character and at the

same time move on to the next character. Repeat steps 2 and 3 for

each character in sequence.

4 Complete the renaming process by pressing the front panel “menu”

button to save the new source input name.

NOTES

• Renamingofasourceinputcanonlybedoneusingthefrontpanelbuttons.

• Ifnochangeismadewithin5secondsorifthefrontpanelbuttonofthe

source input being renamed is pressed, the renaming process will be

automatically terminated with any renamed characters made not saved.

• Youcanterminatetherenamingprocessbypressinganyotherfront

panel buttons (except “loop”, “menu” or the current source input being

renamed). The renamed characters at the time of terminating the

process will be saved.

IDENTIFICATION OF CONTROLS

FRONT PANEL

ENGLISHFRANÇAISESPAÑOLITALIANODEUTSCHNEDERLANDSSVENSKAРУССКИЙ

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