NAD T 743 owner manual Setting UP the T, Getting Started, Dealing with HUM and Noise

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SETTING UP THE T 743

GETTING STARTED

Before you make the first connection to your T 743, you should have the arrangement of your listening room/ home theater components and furniture mapped out, at least initially. Unfortunately, a discussion of the vital questions of loudspeaker placement and listening/viewing positions is beyond our scope here. Suffice it to say that these two questions will influence your system's ultimate performance every bit as powerfully as your selection of electronics and speakers. Your NAD audio specialist dealer will be happy to advise you, and to recommend reference materials.

NOTE: You will need the HTR 2 remote handset to configure your T 743. See “Using the HTR 2 Remote”, below.

DEALING WITH HUM AND NOISE

Hum and noise sometimes prove a challenge in complex, multichannel audio systems. Note these consider- ations to help prevent hum and noise problems:

Power all your system's audio component from AC outlets originating from the same circuit of your house wiring. As far as possible, power all audio components from the same outlet, or adjacent outlets on the same circuit. It may be useful to power video displays (and computers!) from outlets on another circuit, especially if that circuit is supplied from the other "leg" of the house wiring.

Do not bundle analog audio cables with AC power cables, or with coaxial digital-audio cables. It is best if they cross at right angles if they must be in close proximity.

Employ high-quality, well-shielded audio cable throughout, and ensure that all connections are secure.

A pencil-eraser can be used to burnish copper- and gold-plated contacts to ensure good, low-resistance contact; specialized contact-cleaners can also be useful. Avoid unnecessary unplugging and re-plugging, since the gold (or copper) contact plating of typical cable connectors, even very high-quality ones, is very thin and easily worn.

Track down hum/noise problems one component at a time, working backwards from the receiver. That is: Connect the speakers to the receiver only, and check for hum. Then connect one component only (a CD player, for example) alone, with no other components connected and check for hum. Connect additional components, one at a time, to the receiver and check for hum. At each stage, if hum/noise appears, examine the audio cabling and AC-power routing of the new component. In some cases, moving the new component's AC cord to a different outlet, or installing a ground-lift (3-to-2-prong adapter) on its power cord, will eliminate the hum.

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Contents English Precautions Safety InformationExplanation of Graphical Symbols InstallationDamage Requiring Service Electric PowerMaintenance Do not Attempt to Service the Unit Yourself OWNER’S RecordTable of Contents Troubleshooting Specifications Getting the Most from the NAD TWHAT’S in the BOX Unpacking and SetupConnecting AM Antenna Choosing a LocationEase of USE About the TR.S. and Digital Surround IntegrationAbout the HTR 2 System Remote Control UpgradabilityQuickstart Play a DVD MovieFront Panel SearchDigital Input Jack Default Assignment Rear Panel +12V Trigger IN/OUTRear Panel Dealing with HUM and Noise Setting UP the TGetting Started About the ON-SCREEN Displays OSD and FRONT-PANEL Readout Input SetupInput Settings Display the OSDListening Mode Speaker SetupSpeaker Settings Front L/R CenterSetting Channel Balance CHANNEL-BALANCE Test SetupUsing AN SPL Meter Setting Speaker DistanceRecalling Presets Creating and Using PresetsCreating Presets Using the T Selecting Radio Presets Tuning StationsSetting Radio Presets Choosing the FM Mute / ModeDolby PRO Logic II Surround Dolby DigitalDolby PRO Logic Dolby PRO Logic II MovieAbout the T 743S Listening Modes EarsDTS Displaying the Signal ModeSelecting Listening Modes Adjusting Listening Modes To Adjust Channel Levels Surround Sound Channel ChartAdjusting Channel Levels on the FLY Adjusting the Tone ControlsControlling the T Using the HTR 2 Remote ControlSpecifications Learning Codes from Other RemotesPUNCH-THROUGH Copy a Command from Another KEYMacro Commands Recording MacrosDelete Mode KEY-ILLUMINATION TimeoutFactory Reset Loading CODE-LIBRARIESAssigning the Trigger Output Trigger SetupSummary of HTR 2 Modes Troubleshooting Condition Possible Causes Possible SolutionssAV Surround Sound Receiver SpecificationsPhysical Specifications Amplifier SectionNAD

T 743 specifications

The NAD T 743 is an esteemed model in the realm of home theater receivers, reflecting the brand's commitment to delivering high-quality audio performance and versatile features designed to enhance the home entertainment experience. This receiver is particularly noted for its ability to bridge the gap between two-channel audio and multi-channel surround sound, making it an attractive option for audiophiles and movie enthusiasts alike.

At the heart of the NAD T 743 is its powerful amplifier section, which is capable of delivering robust sound with clarity and precision. The receiver boasts a total output of 80 watts per channel into 8 ohms, allowing it to easily drive a range of speaker configurations while maintaining a dynamic and engaging sound. The use of NAD's proprietary PowerDrive technology ensures that the receiver can deliver high peak power without sacrificing performance or dynamic range, which is vital for both music and film playback.

One standout feature of the T 743 is its support for various audio formats, including Dolby Digital and DTS, enabling users to immerse themselves in a lifelike surround sound experience. This receiver also facilitates easy integration with other audio and video components, thanks to its multiple inputs and outputs, including optical and coaxial digital inputs, component video inputs, and a range of analog connections. Additionally, the T 743 features a robust built-in AM/FM tuner, providing access to a wide variety of radio stations.

NAD’s engineering excellence is evident in the T 743's user-friendly interface, which includes an intuitive remote control and on-screen display. This makes it accessible for users of all experience levels to navigate through settings and customize their audio experience. Furthermore, the receiver incorporates a discrete circuit design, which helps reduce noise and enhances sonic purity.

Among its technological innovations, the NAD T 743 utilizes advanced digital signal processing, allowing for the fine-tuning of audio parameters and the creation of customized listening profiles. This flexibility is complemented by its ability to decode high-resolution audio formats, ensuring that music lovers can enjoy the full benefits of their digital collections.

In summary, the NAD T 743 is a versatile and powerful home theater receiver that excels in delivering an immersive audio experience. Its combination of robust amplification, support for various audio formats, and user-friendly design makes it an attractive choice for anyone looking to elevate their home entertainment system. With NAD's longstanding reputation for quality and performance, the T 743 stands as a solid candidate for modern audio and video setups.