NAD T 778 Owner's Manual

Also see for T 778: Quick setup guide Quick setup guide

NAD T 778 Owner's Manual Manual pdf 15 page image

ENGLISH15SPEAKER SETUPAfter connecting all ancillary sources and other combinations, the SpeakerSetup menu will guide you on how to manage and setup your speakers inorder to achieve optimum sound acoustics in your listening environment.The following are the Speaker Setup Menu sections.SPEAKER CONFIGURATIONEvery surround-sound system requires “bass-management” to direct low-frequency content from any or all channels to the speakers best able toreproduce it. For this function to operate correctly, it is important that youcorrectly identify your speakers’ capabilities. We use the terms “Small” and“Large” (and “Off”) but note that physical size may be irrelevant.• A “Small” speaker is any model, regardless of physical size, that lackssignificant deep-bass response, that is, below about 200 Hz.• A “Large” speaker is any full-range model; that is, one with deep-bassresponse• An “Off” 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 “Back” setup item to “Off”. For “Height” speakers,selecting “Off” option for “Height 1” will automatically cut off bothHeight 1 and Height 2 Audio output.The Speaker Configuration is “global”; that is, it remains in force with allinput and listening modes. However, speaker settings are part of the T 778’sPreset system. Consequently, multiple speaker settings can be stored foreasy recall as different types of recordings or listening modes require.Speaker Configuration can be managed and adjusted by pressinga combination of [S] and then [D/F] keys. Set “Front”, “Center” and“Surround” to “Large”, “Small”(40Hz to 200Hz) or “Off” as your subsystem’sspeakers require.The “Back” speakers can either be “Stereo” or “Mono” speakers. Set“Subwoofer” to “On” or “Off”, selecting “On” only if you have a subwooferconnected to the T 778’s SUBW1 or SUBW2 output jack. If “Subwoofer” is setto “Off”, “Front” speakers will automatically be set to “Large”.HEIGHT 1/HEIGHT 2“Height 1” and “Height 2” AUDIO PRE-OUT can be connected to the audioinput of an external power amplifier hooked up with up to 4 Heightspeakers. Height1/Height 2 settings must be set to “On” at the “SpeakerConfiguration” menu to power up the additional Height speakers.ENHANCED BASS“Enhanced Bass” option becomes available when “Front” is set to “Large”.The Enhanced Bass option allows full range operation of the speakerswith the additional bass contribution of the subwoofer. This feature isparticularly useful when one wants to experience maximum bass output.Please note that due to acoustic cancellation effects, the bass responsemay be uneven when using this settingYou can set Subwoofer to “On” even with “Large” front speakers, in whichcase bass content from any channels set to “Small” will be routed to boththe subwoofer and to the front speakers; LFE-channel signal will pass onlyto 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 therange 40Hz to 200Hz.NOTEThe configurations set forth at “Speaker Setup” are carried overwhenever it is enabled during A/V Preset setting. Please see also thesection “A/V Presets” for reference.SPEAKER LEVELSAdjusting the relative balance of your system’s loudspeakers ensures thatsurround-sound recordings, whether music or film, will present the balanceof effects, music and dialog that the artists intended. Additionally, if yoursystem incorporates a subwoofer it establishes a correct relationshipbetween the volume of the subwoofer and the other speakers, and thus oflow-frequencies (bass) to other sonic elements.USING AN SPL METERIt is quite practical to perform the T 778 level setup routines “by ear,” andcareful work will produce acceptably accurate results. However, the useof an inexpensive sound-pressure level (SPL) meter, such as Radio Shackpart number 33-2050, makes this task easier, more accurate and morerepeatable. Ownership of such a meter could prove a valuable audio tool.The SPL meter should be placed at the primary listening position, atapproximately the height of the seated listener’s head. A tripod is helpfulbut 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 nolarge acoustically reflective surfaces obstruct or are near the microphoneelement.OPERATIONCONFIGURING T 778 - SETUP MENU VIA ON-SCREEEN DISPLAY