NAD T 754 Owner's Manual

Also see for T 754: Service manual

NAD T 754 Owner's Manual Manual pdf 14 page image

1 41 41 41 41 4SETTING UP THE T 754Before you make the first connection to your T 754, you should have the arrangement of your listening room/home theater components and furniture mapped out, at least initially. Unfortunately, a discussion of the vitalquestions of loudspeaker placement and listening/viewing positions is beyond our scope here. Suffice it tosay that these two questions will influence your system's ultimate performance every bit as powerfully asyour selection of electronics and speakers. Your NAD audio specialist dealer will be happy to advise you, andto recommend reference materials.NOTE: You will need the HTR 2 remote handset to configure your T 754. See “Using the HTR 2 Remote”,below.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 housewiring. As far as possible, power all audio components from the same outlet, or adjacent outlets on thesame 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 bestif 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-resistancecontact; 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 verythin 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 CDplayer, for example) alone, with no other components connected and check for hum. Connect additionalcomponents, 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 newcomponent's AC cord to a different outlet, or installing a ground-lift (3-to-2-prong adapter) on its powercord, will eliminate the hum.GETTING STGETTING STGETTING STGETTING STGETTING STARARARARARTEDTEDTEDTEDTEDDEALING WITH HUM AND NOISEDEALING WITH HUM AND NOISEDEALING WITH HUM AND NOISEDEALING WITH HUM AND NOISEDEALING WITH HUM AND NOISE