Setup, Setting UP the L, Dealing with HUM and Noise

Setup

SETTING UP THE L 54

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GETTING STARTED

Before you make the first connection to your L 54, 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.

DEALING WITH HUM AND NOISE

Hum and noise sometimes may prove a challenge in audio systems. Note these considerations 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 L 54. That is

aConnect the speakers to the L 54 only, and check for hum.

bThen connect one component only (a CD player, for example) alone, with no other components connected and check for hum.

cConnect additional components, one at a time, to the L 54 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.

FACTORY DEFAULT SETTINGS

Sometimes power spikes and drop-outs may from time to time cause some inadvertent functionality. The procedure below will set the L 54 to factory default settings

1Place the L 54 into AM mode.

2Press quickly the three front panel buttons;

“PLAY/PAUSE” , “STOP/OPEN” then “DISPLAY’, holding the “DISPLAY” button for more than 7 seconds. The L 54 will switch itself off, then back on to DVD mode.

Please note that setting the L 54 to factory default will delete all AM and FM presets.