NAD L75 Owner's Manual

Also see for L75: Service manual

NAD L75 Owner's Manual Manual pdf 17 page image

GB17SPEAKER POSITIONINGThe installation positions of speakers differ according to the size, and acoustics of the listening room. Whileactually listening to a program source, try various speaker positions to determine which layout provides thebest surround effect.• Front speakers Place to the front left and right of the listening position. Front speakers are requiredfor all surround modes.• Center speaker Place front and center. This speaker stabilizes the sound image and helps recreatesound 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 andatmosphere. Required for surround playback. For best results, do not install the rear speakers too farbehind the listening position and install them above the level of the listener’s ears. It is also effective todirect the rear speakers towards a wall or ceiling to further disperse the sound.• Subwoofer Reproduces powerful deep bass sounds.FrontSpeakersCenter Speaker SubwooferRear SpeakersSpeaker layout example when usingSURROUND 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 sensethe available speakers and automatically select decoding modes. It is possible to receive multi-channelsurround sound without a center speaker, but for best results with Dolby Pro Logic and Dolby Digitaldecoding, 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 thespeaker selected by LFE/Bass Out.• NONE: Use this mode if there is no center speaker. The center channel signal will be divided betweenthe 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. Therear channels full range is output as is.• SMALL: The mode to choose if small speakers are used. Frequencies of 90Hz and below are output tothe 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 thespeaker 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 LFEchannel 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 LFEchannel and other selected channels are distributed between the front L and R speakers.SPEAKER CONFIGURATION