C.E.C. HD53N Owner's Manual

Manual is about: balanced

Summary of HD53N

  • Page 1

    Owner's manual.

  • Page 2: Contents

    2 • introduction ……………………………………………………………………… 2 • features ………………………………………………………………………… 2 • important safety instructions ………………………………………………… 4 • handling precautions …………………………………………………………… 6 • accessories ……………………………………………………………………… 7 • front panel functions ………………………………………………………… 8 • rear panel fu...

  • Page 3

    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. - the a...

  • Page 4: Important Safety Instructios

    4 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 t...

  • Page 5

    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 o...

  • Page 6: Handling Precautions

    6 1. Connecting other devices unplug hd53n’s ac power cord from the outlet before connecting or disconnecting other devices. Exercise caution when handling the ac power cord. When disconnecting the ac cord from a socket, make sure you pull the plug, and not the cord itself. 2. Turning power on/off y...

  • Page 7: Accessories

    7 precsion class a headphone amplifier cec co. ,ltd. Hd53n hd 53 n lef headphone amplifi er ข ᛒ ⺑ ᦠ accessories 8. Listening etiquette • excessive sound pressure from headphones and earphones can cause hearing impairments. Take care not to increase the volume too much. • when adjusting the sound vol...

  • Page 8: Front Panel Functions

    8 front panel functions ❶ ❷ ❸ ❹ ❺ ❻ 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 ...

  • Page 9

    9 balanced right channel balanced left channel balanced xlr pinning . 4 low for first choice hi designed for 120ohm • low (right side / output impedance approx. 10 ohm): first choice for best headphone control. • hi (left side / output impedance approx. 120 ohm): sound tuning option for headphones d...

  • Page 10

    10 before connecting or disconnecting the headphone plugs, turn the volume knob to the minimum and take off the headphones or earphones from your ears to avoid a sudden excessive sound pressure or noise, which may cause hearing impairment. ❸ output(hp/sp) selector button press the hp/sp button to se...

  • Page 11: Rear Panel Functions

    11 rear panel functions made in china ❷ ❸ ❹ ❶ speaker xlr input rca input right left right left cec株式会社 cec co., ltd., japan headphone amplifier model: hd53n connect the interconnect cable in the correct direction aligned for the signal path ❶ rca input line in audio signal input jacks equipped with...

  • Page 12

    12 wires spades banana plugs connect the interconnect cable in the correct direction aligned for the signal path ❸ right / left speaker output 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 ca...

  • Page 13: Cautions Regarding Handling

    13 cautions regarding handling maintenance • never connect the speaker output terminals to any ground. Both speaker terminals carry an active signal due to the full balanced circuit design of hd53n. • be careful when connecting active subwoofers or similar devices to the speaker terminals. A short c...

  • Page 14: Troubleshooting

    14 troubleshooting if you suspect a malfunction of the unit, please check the following chart before calling your dealer. No power • check the connection at the both ends of the ac power cord. • make sure there is power at the wall outlet. • check the power switch position. No sound • check the conn...

  • Page 15: Specifi Cations

    0906-a 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) 0.0...