NAD Electronics L75 User Manual download pdf (Page 17)

SPEAKER POSITIONING

The installation positions of speakers differ according to the size, and acoustics of the listening room. While

actually listening to a program source, try various speaker positions to determine which layout provides the

best surround effect.

• Front speakers Place to the front left and right of the listening position. Front speakers are required

for all surround modes.

• Center speaker Place front and center. This speaker stabilizes the sound image and helps recreate

sound motion. Be sure to connect a center speaker when using the 3 STEREO mode.

• Rear speakers Place to the direct left and right. These speakers recreate sound motion and

atmosphere. Required for surround playback. For best results, do not install the rear speakers too far

behind the listening position and install them above the level of the listener’s ears. It is also effective to

direct the rear speakers towards a wall or ceiling to further disperse the sound.

• Subwoofer Reproduces powerful deep bass sounds.

Front

Speakers

Center Speaker

Subwoofer

Rear Speakers

Speaker layout example when using

SURROUND MODE

• Refer to OSD speaker configuration. (page 17)

It is important to perform speaker configuration prior to using the decoder. This allows the unit to sense

the available speakers and automatically select decoding modes. It is possible to receive multi-channel

surround sound without a center speaker, but for best results with Dolby Pro Logic and Dolby Digital

decoding, at least 5 speakers (Left, Center, Right, Left Rear and Right Rear) should be used.

CENTER SPEAKER MODE

• LARGE: Use this mode with a large center speaker. The center channel’s output is full range.

• SMALL: Use this mode with a small center speaker. Bass frequencies below 90 Hz are output from the

speaker selected by LFE/Bass Out.

• NONE: Use this mode if there is no center speaker. The center channel signal will be divided between

the main L and R speakers.

REAR (SURROUND) SPEAKER MODE

• LARGE: The mode to choose if a large speaker is used or if a subwoofer is connected in parallel. The

rear channels full range is output as is.

• SMALL: The mode to choose if small speakers are used. Frequencies of 90Hz and below are output to

the speaker selected by LFE/Bass Out.

FRONT SPEAKER MODE

• LARGE: The mode to choose if a large speaker are installed. Front channels full range is output as is.

• SMALL: The mode to choose compact speakers. Frequencies of 90Hz and below are output to the

speaker selected by LFE/Bass Out.

SUBWOOFER OUTPUT

• SUB-ON: The mode to choose if a subwoofer is used. Low frequencies of 90Hz and below in the LFE

channel and other selected channels are output to the subwoofer.

• SUB-OFF: The mode to choose if no subwoofer is used. Low frequencies of 90Hz and below in the LFE

channel and other selected channels are distributed between the front L and R speakers.

SPEAKER CONFIGURATION

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NAD Electronics L75 User Manual Page 17

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