Bedienungsanleitung NAD M17 AV (Seite 18 von 38) (Englisch)

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SPEAKER SETUP

After connecting all ancillary sources and other combinations, the Speaker

Setup menu will guide you on how to manage and setup your speakers in

order to achieve optimum sound acoustics in your listening environment.

The following are the Speaker Setup Menu sections.

IMPORTANT NOTICE

The M17 is an AV Surround Sound Preamplier and therefore has no

speakers. The mention of “Speaker(s)” in this manual refers to the

speakers of your external amplier as interfaced with the M17.

AUDYSSEY AUTO CALIBRATION

It has been shown that many, if not most, surround sound systems are not

accurately setup and calibrated. To conduct properly, calibration requires

special knowledge and instrumentation that the average person probably

doesn’t possess.

The Audyssey Auto Setup and Calibration featured in M17 uses a

microphone, along with sophisticated digital electronics built into your

M17, to automatically setup and calibrate the M17 to the exact speakers

and speaker placement of your own unique Home Theatre.

The Left Channel of AUDIO 1 IN is the assigned port where the supplied

3.5mm female jack to RCA plug Adapter can be connected. Plug in the

Audyssey microphone into the adapter for Audyssey Auto Calibration.

The following measurements are performed:

• Detection: Speaker conguration is detected including number of

surround speakers and whether a subwoofer and center channel is

connected.

• Size: M17 crossover is set based on each channel’s signal handling

capability and the subwoofer crossover is automatically set.

• Level: SPL of each speaker is matched within 1dB at the microphone

position.

• Distance: This is accurately set to within 1 foot (30 centimeters) of the

microphone for each speaker position.

• Polarity: The setup program will detect and notify the user if any

speakers are connected improperly. Incorrect polarity can ruin the

illusion of realism oered by surround sound.

This is a one-time set up, unless speakers are moved or changed, in which

case the calibration should be performed again.

AUDYSSEY MultEQ XT ROOM ACOUSTICS CORRECTION

Sound reecting from room boundaries can disturb the spatial illusion

of surround sound, and can also distort the tonal balance of the system.

Professional Acoustical Engineers often add wall treatments and even move

walls and relocate speakers to improve system performance, but for the

average Home Theatre, this is either too expensive or just not a practical

solution.

Audyssey MultEQ XT features adaptive low-frequency correction and uses

16x high-resolution equalization lters for satellites and subwoofers. Using

multiple measurements from actual listening positions, and processing

this information with sophisticated digital signal processing, Audyssey

MultEQ XT is able to “precondition” the signal to eectively make the walls

disappear. This creates a “family size” sweet spot where the sound and

spatial cues are very accurately reproduced.

The Audyssey Auto Calibration wizard will guide you through a simple

step-by-step conguration. Once setup and calibrated, the next greatest

improvement in performance is obtained by eliminating the acoustic

interference caused by room boundaries interacting with your speakers.

MEASUREMENT IS THE FIRST STEP

The sound at each listening position (up to 8 positions) is calibrated using

the same microphone used during the setup phase.

A special test tone is sent to each speaker and the data is memorized by

the M17. The duration of calibration may take some time depending on

the number of speakers as well as the number of measuring points. After

all positions are measured, the DSP calculates the ideal system response for

your particular room and speaker setup.

If some inconsistencies or discrepancies are detected during the Audyssey

calibration, the process maybe interrupted or the problem is shown in the

particular setup window. A notice screen is correspondingly displayed.

After following and undertaking the displayed instructions, re-start the

Audyssey calibration again. When the measurements are nalized, Audyssey

calculates the ideal system response for your particular room and speaker

setup.

NOTE

The test tone emitted during measurement is loud. If you cannot

withstand the test tone level, it is advisable that you stay away from

the room or location where the speakers are being calibrated. Return to

the room or location after each calibration to change the microphone’s

position or to nalize the calibration.

OPERATION

USING THE M17  SETUP MENU

ENGLISH FRANÇAIS ESPAÑOL ITALIANO DEUTSCH NEDERLANDS SVENSKA РУССКИЙ

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