User manual NAD T753

[. . . ] Owner's Manual ENGLISH SAFETY INFORMATION EXPLANATION EXPLANATION OF GRAPHICAL SYMBOLS The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. PRECAUTIONS Read the Operating Instructions carefully and completely before operating the unit. Be sure to keep the Operating Instructions for future reference. All warnings and cautions in the Operating Instructions and on the unit should be strictly followed, as well as the safety suggestions below. INSTALLA ALLATION INSTALLATION 1 Water and Moisture - The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on the apparatus. [. . . ] Using the [ / ] keys select main and zone listening for 5. 1/2. 0 or 7. 1/OFF. NOTE: If 7. 1 input is selected then the zone output is switched off. LISTENING MODE From the OSD's main <Setup> menu select the <Listening Mode> line using the HTR 2 remote's [ / ], and [Enter] keys. Using the [ / ] and [ / ] keys you can select mode variations, and adjust various parameters, depending on the current Listening Mode. For more information, see "About the T 753's Listening Modes, " below. NOTE: Listening Mode is part of the T 753's Preset system. See "Creating and Using Presets, " below; NOTE: The Listening Mode used the last time a given input was selected will be recalled the next time that input is selected, unless overridden by a Dolby Digital or DTS signal, which automatically invoke their native Listening Modes. 16 ABOUT THE ON-SCREEN DISPLAYS (OSD) AND FRONT-PANEL READOUT CHANNEL-BALANCE (TEST) SETUP Adjusting the relative balance of your system's loudspeakers ensures that surround-sound recordings, whether music or film, will present the balance of effects, music, and dialog that the artists intended. Additionally, if your system incorporates a subwoofer it establishes a correct relationship between the volume of the subwoofer and the other speakers, and thus of low-frequencies (bass) to other sonic elements. USING AN SPL METER It is quite practical to perform the T 753 Level setup routines "by ear, " and careful work will produce acceptably accurate results. However, the use of an inexpensive sound-pressure level (SPL) meter, such as Radio Shack part number 33-2050, makes this task easier, more accurate and more repeatable. Ownership of such a meter could prove a valuable audio tool; your NAD audio specialist may be able to help you with temporary use of a meter. The SPL meter should be placed at the primary listening position, at approximately the height of the seated listener's head. A tripod is helpful, but 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 no large acoustically reflective surfaces obstruct or are near the microphone element. Orient the meter with its microphone (usually at one end) pointing straight up toward the ceiling (not forward toward the speakers) and ensure that its "C" weighting scale is selected. (On Radio Shack meters this necessitates either setting the meter to its 80 dB range and taking your readings at the -5 point, or selecting the 70 dB range and reading at the +5 point. ) SETTING CHANNEL BALANCE Press the HTR 2 remote's [Test] key, activating the T 753's channel-balancing test signal and displaying the <Channel Levels> menu on the OSD. You will hear a "surf" sound that cycles through your speakers, beginning with the left-front. (If you do not hear the test signal, check your speaker connections (above), and your <Speaker settings> OSD menu settings, (above. ) As the test signal cycles around the speakers, the OSD (and the VFL front panel display) will highlight the currently playing channel. Now use the remote's [ / ] keys to adjust the loudness of the noise output from the currently playing channel to the required level (it's usually simplest to begin with the left-front). The "level offset" reading on the right will change by 1 dB increments; ±12 dB adjustment is available. NOTE: If you are balancing levels "by ear", choose one speaker--usually the center--as a reference and adjust each of the others in turn to "sound as loud" as the reference. Be sure that you remain in the primary listening position while balancing all channels. Using the remote's [ / ] and [ / ] keys adjust each speaker to produce the same SPL meter reading (or subjective loudness). Note that: · All speakers must be in their final locations before level-setting. [. . . ] When you enter the correct number the component will turn off; press [ENTER] to accept that codelibrary number and exit the Library Mode. NAD-brand component CD CD Player (new) CD Player (old) TAPE Tape Deck B Tape Deck A DVD T562 T550, L55 T512, T531, T532 T571, T572 L56 T513, T533 HTR 2 code-library numbers 200 201 400 401 600 601 602 602 604 605 28 USING THE HTR 2 REMOTE CONTROL Search Mode If none of the codes from the table, when entered, turns on the component, and if you are quite sure you have followed the above procedure completely and carefully, you may want to try the "search" method as follows: Enter Library Mode by simultaneously pressing-and-holding for 3 seconds both the desired Device Selector key and the [A/V PRESET] key, until the Learn LED turns green. Now press-and-hold the HTR 2's [ ] (or [ ]) key; the remote will step through all the available codes at a rate of approximately 1 per second. When the component turns off, immediately release the cursor key; press [ENTER] to accept that code-library and exit the Library Mode. [. . . ]