NAD S170i Owner's Manual

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NAD S170i Owner's Manual Manual pdf 26 page image

ENGLISH FRANÇAIS DEUTSCH ESPAÑOL ITALIANO PORTUGUÊS SVENSKA26USING THE S170iABOUT THE THX MODEIn addition to certifying very high fundamental multichannel audio performance from componentsawarded the THX/Ultra logo, THX Ltd’s Home THX program also mandates that Ultra components includethe THX mode. This incorporates three fundamental surround-audio enhancements:• Re-equalization contours high frequencies from the front channels to better match the tonal balanceof the original film soundtrack as reproduced on the “dubbing stage” on which the director andsound-mixers auditioned the film during its production.• Timbre-matching compensates for the lateral/rearward placement of surround loudspeakers in acorrectly deployed surround home theater system, achieving a more consistent tonal characteristicfrom sounds originating from any point around the audience positions.• Decorrelation mitigates the monaural surround channel delivered by all Pro Logic recordings (and someDolby Digital and DTS sources), yielding more spacious, natural reproduction of a film’s ambience and“virtual acoustics.”ENGAGING THXFrom the the HTR 2 remote, press the [AMP] key first, then press the [THX ] key; THX surround will beengaged. Subsequent presses of the [THX ] key will “toggle” between standard-THX and THX SurroundEX modes (if available) then back to non-THX mode.Note that:• THX modes are only available to digital-input sources: Dolby Digital; DTS; PCM• For PCM sources, the Dolby Pro Logic listening mode must previously have been engaged.• “Incompatible Source” will appear on the OSD and front-panel readout when THX is invoked for ananalog source, when Pro Logic is not the current listening mode, or when THX Surround EX is invokedfor a PCM source or a Dolby Digital or DTS non-discrete-surround source (2/0/0, 2/1/0, 3/1/1, etc.).ADJUSTING CHANNEL LEVELSYou may make temporary changes to the relative levels of center, surround, and subwoofer outputswithout abandoning the permanent levels calibrated from the OSD’s Level setup item. This may proveuseful in a number of circumstances, for example: to increase (or tone down) a film’s dialog clarity byraising (lowering) the center channel; to enhance (or inhibit) subjective ambience from a music recordingreproduced via EARS by raising (lowering) the surround-channels level; to mitigate excessive deep bass (orenhance deep bass) by lowering (raising) the subwoofer level.CHANGING CHANNEL LEVELSFrom the HTR 2 remote Use the three vertically paired up/down key-pairs, [Surr.]], [Center], and [Sub] toadjustSurround, Center-channel, or Subwoofer -channels relative levels; the changing levels will bedisplayed on the OSD and the front-panel readout.NOTE THAT:• Level settings are added to the setup levels established on the S170i preamp’s OSDmenu (above). For example: If your establishes at “-3 dB” and you manipulate[Center up/down] level to +2 dB, the net overall effect will be a center-channel level of -1 dB.• Changes made on the [LEVELS] page are canceled by cycling the S170i through its Standby mode.• If a Preset was is in force (previously selected), the levels from which [LEVELS] page’s three controls“start” will reflect any levels stored by the preset. (See Configuring Presets, above.)• The [LEVELS] page will show and permit adjustment of a channel that is not present in the setup> OSD menu. For example: Even if you have set to “No” on the OSDmenu, the [Center up/down] keys will appear on the [LEVELS] page; they will have no effect, evenupon the “phantom center channel” when listening in any of the surround modes.• If one or two surround-back channels are configured as present in the OSD menu,their levels will be raised and lowered by the [LEVELS] page’s [Surr up/down] keys in lockstep with thesurround channels.