NEC NDH-81 owner manual Risk of Electric Shock Do not Open

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CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK

OF ELECTRIC SHOCK

DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

This 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 product.

WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK HAZARD, DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.

CAUTION:

Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.

Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from over heating.

The openings should be never be blocked by placing the product on a bed, sofa, rug or other similar surface.This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer's instruction have been adhered to.

CAUTION:

CLASS 2M VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED DO NOT STARE INTO THE BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

CAUTION:

This product employs a Laser System.

To ensure proper use of this product, please read this owner’s manual carefully and retain it for future reference. Should the unit require maintenance, contact an authorized service center.

Performing controls, adjustments, or carrying out procedures other than those specified herein may result in hazardous radiation exposure.

To prevent direct exposure to laser beam, do not try to open the enclosure. Visible laser radiation when open. DO NOT STARE INTO BEAM.

CAUTION: The apparatus should not be exposed to water (dripping or splashing) and no objects filled with liquids, such as vases, should be placed on the apparatus.

CAUTION concerning the Power Cord

Most appliances recommend they be placed upon a dedicated circuit;

That is, a single outlet circuit which powers only that appliance and has no additional outlets or branch circuits. Check the specification page of this owner's manual to be certain.

Do not overload wall outlets. Overloaded wall outlets, loose or damaged wall outlets, extension cords, frayed power cords, or damaged or cracked wire insulation are dangerous. Any of these conditions could result in electric shock or fire. Periodically examine the cord of your appliance, and if its appearance indicates damage or deterioration, unplug it, discontinue use of the appliance, and have the cord replaced with an exact replacement part by an authorized servicer.

Protect the power cord from physical or mechanical abuse, such as being twisted, kinked, pinched, closed in a door, or walked upon. Pay particular attention to plugs, wall outlets, and the point where the cord exits the appliance.

To disconnect power from the mains, pull out the mains cord plug. When installing the product, ensure that the plug is easily accessible.

CAUTION

The appliance is not intended for use by young children or infirm persons without supervision.

Young Children should be supervised to ensure that they do not play with appliance.

If the appliance is supplied from a cord extension set or an electrical portable outlet device, the cord extension set on electrical portable outlet device must be positioned so that it is not subject to splashing or ingress of moisture.

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Contents HDD/DVD Recorder Risk of Electric Shock Do not Open Contents Introduction About the Symbol Display Symbol Used in this ManualCleaning Discs Handling DiscsRecordable and Playable Discs Recommended recordable DVD discsRegional Code Availability of copying or moving featurePlayable Discs About the internal hard disk drive Front Panel Remote Control Battery Installation Remote ControlRemote Control Operation Rear Panel Hookup and SettingsConnecting to the Aerial RF coaxial connectionAudio Left/Right Connection Connections to Your TVVideo connection Component Video connectionAmplifier Receiver Connecting to an AmplifierDigital Multi-channel sound Connecting a Digital Camcorder Accessory Audio/Video A/V ConnectionsConnecting to the AV in 1 or AV in 2 Jacks Front of the recorder Rear RecorderGeneral Settings Using the Home MenuInitial Settings Auto ProgrammingProgram Edit Program EditManual Clock Set Display ModePower Save Mode TV AspectLanguage Settings Audio SettingsRating Lock Parental Control SettingsSet Password Area CodeRecording Settings Disc SettingsDisc Protect FinalizeDisc Label Displaying Disc Information on-screen General Explanation On-Screen DisplayDisplaying Information While Watching TV Buttons Operations Discs General Playback FeaturesPlayback Playback Marker Search If a menu screen is displayed DVD VCDMoving to another Title HDD -RWVR Camera Angle DVDPIP Picture in Picture HDD -RWVR 3D Surround -RWVR-RWVideo+RW -RLast Condition Memory DVD DivX file requirement Playing a DivX Movie FileMovie List menu options Playable Audio format AC3, PCM, MP2, MP3, WMARandom Playing an Audio CD or MP3/WMA fileAudio CD and Music menu options MP3/WMA audio file requirementProgram Playback with Audio CD and MP3/WMA file Program List menu optionsPhoto file requirement Viewing a Jpeg FilePhoto List menu options Photo sizeView Slide Shows Skip ImagesRotate Images To listen to music while slide show simultaneouslyNaming a file on the HDD Editing a MP3/WMA, JPEG, DivX fileErasing a files/folders from the HDD Copying a files to another media or folder Moving a filesAbout DVD recording Disc types and recording formats, modes, and settingsRecording About HDD recordingTimeshift HDD To Pause the Recording Instant Timer RecordingBasic Recording from a TV Checking the Recording TimeTimer Recording Recording from an External Input Checking Timer Recording DetailsTimer Recording Troubleshooting Recording from External ComponentsBefore DV dubbing TroubleshootingRecording from DV Input Recording from a Digital CamcorderTime Slip HDD Simultaneous recording and playbackPlayback another title during recording Editing Title List and Chapter List Menu OverviewChanging Title Thumbnails HDD, VR Mode Original and Playlist EditingAdding Chapter Markers Titles, Chapters and PartsMaking a New Playlist Adding Additional Title/Chapters to the Playlist -RWVRDeleting an Original or Playlist Title/Chapter Deleting a Part HDD -RWVRTime Search HDD -RWVR-RWVideo Remote control buttons for entering a nameNaming a Title Combining Two Titles Into One Sort HDDUndoing/Redoing the Last Deletion -RWVR Divide One Titles Into Two Combining Two Chapters IntoProtect a Title Moving a Playlist Chapter -RWVRHide a Chapter/Title +RW +R Restrictions on copying DubbingBefore Dubbing Fast copying MaximumDubbing from HDD to DVD Dubbing from DVD to HDDOne Touch Copy HDD to DVD One Touch Copy DVD to HDDOverwriting Recording +RW ReferenceAdditional Information To finalize a disc, refer to Finalize onLanguage Codes Area CodesTroubleshooting Symptom Cause SolutionIf you observe any of the following symptoms Resetting the recorderYou can reset the recorder as follows Specifications Queensland New South walesVictoria South AustraliaNo MFL30384253

NDH-81 specifications

The NEC NDH-81 is a high-performance headphone designed to deliver an exceptional audio experience, using a blend of advanced technologies and ergonomic design. This model is recognized for its professional-grade sound quality and is particularly appealing to audiophiles and sound engineers alike.

One of the NDH-81's standout features is its closed-back design, which provides excellent sound isolation. This allows users to immerse themselves in the music without distractions from ambient noise. The headphones utilize a well-engineered bass reflex system that enhances low-frequency response while maintaining clarity across all ranges. This ensures that listeners can experience deep bass without sacrificing the integrity of mid- and high-frequency sounds.

The NDH-81 is equipped with large, high-fidelity 38mm dynamic drivers. These drivers are meticulously crafted to ensure a balanced sound stage, making it suitable for critical listening and professional audio applications. The headphones have an impressive frequency response range, typically between 5 Hz to 40 kHz, which encompasses the full spectrum of human hearing. This broad range allows for accurate reproduction of audio signals, capturing nuances that are often lost in lower-quality headphones.

Comfort is another essential aspect of the NDH-81. The headphones feature plush, breathable ear pads made from soft velour material. This ergonomic design ensures enduring comfort during extended listening sessions, crucial for professional use where long hours of wear are common. Additionally, the adjustable headband provides a secure fit without causing fatigue.

Another innovative technology incorporated into the NDH-81 is its impedance compatibility. With an impedance of 24 ohms, these headphones can be driven effectively by a wide variety of devices, from portable audio players to professional studio equipment. This versatility allows clients to utilize the NDH-81 across different audio setups without compromising sound quality.

The build quality of the NEC NDH-81 also deserves attention. Constructed with durable materials, these headphones are built to withstand the rigors of everyday use, ensuring longevity and reliability. Furthermore, the detachable cable feature adds to the practicality of the design, allowing for easy replacement in case of wear and tear.

In conclusion, the NEC NDH-81 stands out in the competitive headphone market due to its combination of advanced audio technologies, comfortable design, and durable construction. Whether for professional studio work, critical listening, or casual enjoyment, the NDH-81 offers a compelling solution for sound enthusiasts seeking quality and performance.
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