C.E.C. HD53N Owner's Manual
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C.E.C. HD53N Owner's Manual

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Summary of Contents for C.E.C. HD53N

  • Page 1 Owner's Manual...

  • Page 2: Table Of Contents

    Features • HD53N is a very high grade headphone amplifi er as well as a complete HiFi- solution for music lovers with headphone priority. Due to the integrated power amplifier HD53N can be the center of a very high grade music-listening- equipment.
  • Page 3 • HD53N’s design also allows the easy variation of the amplifi er gain. Consequently used an intelligent gain management (IGM) replaces a traditional volume control with a lot of advantages: - It uses the full signal level of the source and thus avoids dynamic losses and improves S/N-ratio.

  • Page 4: Important Safety Instructions

    Important Safety Instructios Caution: To reduce the risk of electric shock, do not remove the cover or rear panel. It does not contain any user-serviceable parts. Refer servicing to qualifi ed service personnel. The lighting flash with arrowhead symbol, within an equilateral triangle, is intended to alert the use to potential shock hazards within the product’s enclosure.
  • Page 5 purpose of the grounding-type plug. This plug has two poles and a third grounding hole. The third hole is provided for your safety. If the provided plug does not fi t your outlet, consult an electrician for replacement of the obsolete outlet. 10) Protect the unit’s power cord from being walked on or pinched, especially around the plugs, convenience receptacles, and where it exists the unit’s casing.

  • Page 6: Handling Precautions

    Turning power ON: Turn HD53N’s volume to the minimum and power ON at last, after turning ON the DA converter or CD-player connected to HD53N.

  • Page 7: Accessories

    2. AC Power Cord 3. Owner’s manual NOTE: Keep the packaging available for future transportation needs. The AC power cord is for use with HD53N exclusively, and should not be used for other devices. P r e c s i...

  • Page 8: Front Panel Functions

    ❶ POWER button Push the POWER button to turn HD53N ON respectively OFF. When HD53N is turned ON the display will blink “INPUT” and “XLR” or “RCA” indicators during the unit is in starting-up. Approximately 20 seconds later once the display changes to indicate the selected INPUT and light up a gain setting (“LOW GAIN”...
  • Page 9 Pinning: 2=Hot(+), 3=Cold(-). Balanced output impedance is nearly 0 Ohm. Never use any kind of adaptors from XLR to an unbalanced headphone plug! It may destroy HD53N and/or the headphones! Balanced XLR Pinning Balanced Left Channel Balanced Right Channel...
  • Page 10 HIGH GAIN. *The volume knob position where HD53N exceeds the maximum output power varies with the connected devices and input sources. When the sound is distorted the power may exceed the maximum already.

  • Page 11: Rear Panel Functions

    Rear Panel Functions Headphone Amplifier Model: HD53N CEC株式会社 CEC Co., Ltd., Japan Made in China RIGHT LEFT RCA INPUT XLR INPUT RIGHT SPEAKER LEFT ❶ ❷ ❸ ❹ ❶ RCA Input Line in audio signal input jacks equipped with unbalanced RCA connectors.
  • Page 12 Power amplifi er output terminals for the right/left speakers. The red terminal is for (+) the black one is for (-). Speakers with 4 ohm to 8 ohm impedance can be connected by using banana plugs, spades or wires. Note: Before connecting or disconnecting speakers turn the HD53N’s power OFF. Wires...

  • Page 13: Cautions Regarding Handling

    • If the surface of the HD53N enclosure is soiled, wipe with a soft cloth or use diluted neutral cleaning liquid. Be sure to remove any fl uid completely. Do not use thinner, benzene, alcohol, chemical cloths or bleaching agents as these may damage the surface of the HD53N enclosure.

  • Page 14: Troubleshooting

    INPUT indicator continues blinking and the unit is not ready for use • Turn HD53N off and unplug the AC power cord from the outlet. Wait for a minute, plug the AC power cord back in and turn HD53N on again. Check all plugs on the front and rear panel are properly connected.

  • Page 15: Ce And Fcc Certifi Cates

    Specifi cations Frequency Response: 20Hz – 20kHz, +0/-0.25dB S/N Ratio: -103dB Headphone LOW/HI (Volume 50% max. power / A-weighted) -110dB Headphone Balanced (Volume 50% max. power / A-weighted) THD: 0.06% Headphone LOW/HI (1Vrms input / 0dBu output) 0.009% Headphone balanced (1Vrms input / 3dBu output) 0.03% Speaker 8 Ohm (2Vrms input / 10W output) Rated power: 2 x 1.15W (32 ) Headphone LOW...

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