Denon AH-GC25NC Owner's Manual
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Denon AH-GC25NC Owner's Manual

Noise cancelling over-ear headphone
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Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
AH-GC25NC
Noise Cancelling Over-Ear Headphone
Owner's Manual
1

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Table of Contents
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Summary of Contents for Denon AH-GC25NC

  • Page 1 Contents Preparation Connections Operation Troubleshooting Appendix AH-GC25NC Noise Cancelling Over-Ear Headphone Owner’s Manual...

  • Page 2: Table Of Contents

    Contents Preparation Connections Operation Troubleshooting Appendix Troubleshooting Preparation Troubleshooting Unpacking Power does not turn on / power is turning off automatically Features The device cannot be charged Sound quality No sound comes out Functions Sound is distorted, noisy, or cuts in and out Part names and functions Appendix Charging / Battery status...

  • Page 3: Unpacking

    Contents Preparation Connections Operation Troubleshooting Appendix Thank you for purchasing this product. To ensure proper operation, please read this Owner’s Manual carefully before using the product. Unpacking Check that all of these are present before using this device. Quick Start Guide Audio cable Safety Instructions Audio cable (approx.

  • Page 4: Features

    Contents Preparation Connections Operation Troubleshooting Appendix Features Sound quality Functions Equipped with a 40 mm free edge driver for the ideal piston When the noise cancelling function is turned on, you can hear motion. This enables natural, delicate audio to be enjoyed with clear sound even if you are in a noisy location such as inside a minimal distortion.

  • Page 5: Part Names And Functions

    Contents Preparation Connections Operation Troubleshooting Appendix Part names and functions A L/R Indicators B Noise cancelling microphones C Charging LED D Tap sensor panel Lightly tap with your finger to toggle the ambient sound mix function on or off. (v p. 11) E NC (Noise Cancel) LED F Control switch (NC MODE) Indicates the remaining battery power.

  • Page 6: Charging / Battery Status

    Contents Preparation Connections Operation Troubleshooting Appendix Charging / Battery status Connect the headphones to a computer or USB AC adapter (sold separately) using the supplied dedicated USB cable to charge the battery. 0 When using the headphones for the first time after purchase or when the remaining power of the rechargeable battery is low, charge the battery.

  • Page 7: Wearing

    Contents Preparation Connections Operation Troubleshooting Appendix Wearing o Checking the remaining battery power The remaining power of the rechargeable battery can be checked from Adjust the slider to the preferred length. the number of alert sounds or the number of times the charging LED flashes.

  • Page 8: Connecting The Audio Cable

    Contents Preparation Connections Operation Troubleshooting Appendix Connecting the audio cable o Using the audio cable with remote control mic An audio cable with a remote control mic as well as an audio cable are included with these headphones. Use the audio cable with the remote control mic to connect with remote control-compatible playback devices to play and pause music, as well as receive, make and hang up phone calls.

  • Page 9: Decreasing Outside Noise (Noise Cancell Function)

    Contents Preparation Connections Operation Troubleshooting Appendix Decreasing outside noise (Noise cancell function) Turn the noise cancelling function on while listening to music to reduce o Turning the noise cancelling function on surrounding noise and better focus on your music. These headphones are equipped with three noise cancelling modes that can be set as needed for Slide the NC MODE switch to the center.
  • Page 10 Contents Preparation Connections Operation Troubleshooting Appendix o Switching the noise cancelling mode o Turning the noise cancelling function and power off Slide the NC MODE switch to the left while the noise cancelling function is on. Slide the NC MODE switch to the right. The setting changes each time you slide the switch to the left.

  • Page 11: Listening To Surrounding Sound (Ambient Sound Mix Function)

    Contents Preparation Connections Operation Troubleshooting Appendix Listening to surrounding sound (ambient sound mix function) Turn on the ambient sound mix function while listening to music to use the o Turning the ambient sound mix function off mic to mix surrounding sound into the music you are listening to. Enjoying music while also being able to hear surrounding sound is useful when you Tap the center of the tap sensor panel twice while the are listening to an in-flight announcement or talking with your headphones...

  • Page 12: Auto Standby Function

    Contents Preparation Connections Operation Troubleshooting Appendix Auto standby function To keep the battery from draining, the headphones automatically turn off o Turning the auto standby function on and off after no operations are performed or they are stationary* for at least 10 minutes.

  • Page 13: Information

    Contents Preparation Connections Operation Troubleshooting Appendix Information Storage in the carrying case Auto dimmer function Remove the cable from the headphones and store them in the included The auto dimmer function changes the LED brightness when the carrying case as shown below. headphones are tilted past the defined angle.
  • Page 14 If the issue is not covered here, there may be a malfunction. Contact the store where you purchased the headphones. If the staff at the store where you purchased the headphones also do not know how to resolve the issue, contact the Denon Customer Service Center or your nearest Repairs Center.
  • Page 15 Contents Preparation Connections Operation Troubleshooting Appendix The device cannot be charged The headphones cannot be charged. Check whether the power plug is correctly inserted into the power outlet. (v p. 6) Make sure the supplied USB cable is inserted correctly into the headphones. (v p. 6) If the headphones are connected to the computer via the USB port, check that the computer is powered on.
  • Page 16 Disposal of these headphones The rechargeable battery built into these headphones can be recycled. Contact the Denon Customer Service Center for details on disposing of these headphones.
  • Page 17 Contents Preparation Connections Operation Troubleshooting Appendix Specifications Type: Dynamic type Drive units: φ40 mm Impedance: 16 Ω/ohms Sound pressure sensitivity ： 98 dB/mW Maximum input ： 1,000 mW Playback frequency: 5 – 50,000 Hz Continuous playback time (noise cancellation function on): Approx.
  • Page 18 3520 10657 00ADA Copyright © 2019 D&M Holdings Inc. All Rights Reserved.

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