User manual NAD T747

[. . . ] ® AV Surround Sound Receiver T 747 IMPORTANT NOTICE REGARDING FIRST TIME SETUP OF NAD T 747 The T 747 includes a high performance video processor that can upscale Standard Definition (SD) video to High Definition (HD) video. The HD video is only available on the HDMI (up to 1080p resolution) or Component Video (up to 1080i resolution only) output. If you are using an HD capable TV, you should connect either HDMI or Component Video, not both. For the On Screen Display (required for Setup) to be shown at your connected TV, set your T 747 to the Source number that corresponds to your TV's signal type: Source 1 = defaulted to HDMI Monitor OUT Source 2 = defaulted to Component Video Monitor OUT Source 3 = defaulted to S-Video Monitor OUT These default settings can be changed, but should be used to get started. [. . . ] · Speaker Level and Size : T 747 crossover is set based on each channel's signal handling capability and the subwoofer crossover is automatically set. SPL (Sound Pressure Level) of each speaker is matched with respect to the microphone position. · Equalization : Adjust tonal quality (bass/treble level) for each speaker. This is a one-time set up, unless speakers are moved or changed, in which case the calibration should be performed again. NOTES · Autocalibrationispossibleonlyfora7. 1or5. 1speakerconfiguration. Forotherspeakerconfigurations, likea2. 1setup, youhaveto manuallysetthemupbyreferringtotheguidelinesbelowforSpeaker Configuration, SpeakerDistanceandSpeakerLevels. · Thetesttoneemittedduringmeasurementisloud. Thismaybe bothersomeforyouandmayaffectaswellyourotherhousehold membersandevenyourneighbor. AUTO CALIBRATION It has been shown that many, if not most, surround sound systems are not accurately setup and calibrated. To be done properly, calibration requires special knowledge and instrumentation that the average person probably doesn't possess. The Auto Calibration featured in T 747 uses a microphone, along with sophisticated digital electronics built into your T 747, to automatically setup and calibrate the T 747 to the exact speakers and speaker placement of your own unique Home Theatre. MEASUREMENT IS THE FIRST STEP Connect the microphone jack into the front panel's MP/MIC input. Place the supplied microphone in the listening position at about the same height as your listening ears. The microphone has a threaded insert at its base that makes possible for it to be mounted on a tripod. The sound at your main listening position is setup using the supplied microphone. Depending upon the availability of speakers, you can select either 7. 1 or 5. 1 setup. Upon selection of either 7. 1 or 5. 1, the auto calibration starts ­ refer to the OSD as auto calibration steps through each measurement parameter. A special test tone is sent to each speaker and the data is memorized by the T 747. The duration of setup may take some time depending on the number of speakers. After the measurements, the T 747 calculates the ideal system response for your particular room and speaker setup. If some inconsistencies or discrepancies are detected during the setup, the process maybe interrupted or the problem is shown in the particular setup window. After following and undertaking the displayed instructions, re-start the Auto Calibration setup again. When the measurements are finalized, the ideal system response is calculated for your particular room and speaker setup. 4 OPERATION USING THE T 747 ­ SETUP MENU SPEAKER CONFIGURATION SPEAKER LEVELS Depending on the relationship between speakers, the possible selections for each speaker are as follows: The Speaker Configuration is "global"; that is, it remains in force with all inputs and in all listening modes. Consequently, multiple speaker settings can be stored for easy recall as different types of recordings or listening modes require. Speaker Configuration can be managed and adjusted by pressing a combination of [ ] and then [ ] keys. [. . . ] · Source's digital output is not connected to a T 747 digital input. · Source component not configured for multichannel digital output. · IR transmitter window on remote or IR A/V Receiver window on T 747 is obstructed. · T 747 front panel is in very bright sunlight or ambient light. [. . . ]