Owner`s Manual
Preparation
Connections
Operation
Troubleshooting
Appendix
.
Contents
AH-GC20
GLOBE CRUISER™ Over-ear Headphones/
Wireless Noise-Cancelling Headphones
Owner’s Manual
You can print more than one page of a PDF onto a single sheet of paper.
1
Contents
Preparation
Connections
Operation
4
5
5
5
5
6
7
9
Listening to music
Listening to music using a Bluetooth connection
Listening to music using a wired connection
Decreasing outside noise (Noise cancell function)
Conducting phone calls
Making a call
Answering an incoming call
Ending a call
Using the call waiting function
Ignoring an incoming call
Switching a call from the headphones to a mobile phone
Other operations
Information
Airplane use
Storage in the carrying case
Connections
Bluetooth operation
Pairing
Registering (Pairing) and connecting a Bluetooth device
Reconnecting paired devices
Deleting pairing information
Turning the power on
Turning the power off
Wearing the headphones
Simultaneously connecting multiple Bluetooth devices (Multipoint
function)
Appendix
Operation
Preparation
Unpacking
Features
Sound quality
Functions
Telephone Calls
Features and functions
Charging
Using Audio Guidance (Notification Sounds)
Troubleshooting
11
11
11
13
14
15
15
16
17
2
19
19
20
21
22
22
22
22
23
23
23
24
25
25
25
Contents
Preparation
Connections
Operation
Troubleshooting
Troubleshooting
26
Appendix
Precautions for Use
Disposal of these headphones
Trademark information
Specifications
28
29
29
30
3
Troubleshooting
Appendix
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
.
.
.
.
Unpack your new AH-GC20 and verify that the following items are included.
Quick Guide
.
Precautions on the use of
headphones
Audio cable (approx. 1.3 m)
.
USB cable (for charging: Approx. 0.5 m)
.
.
Conversion plug for aircraft use
6.3 mm Conversion adapter
Carrying case
.
DEN
ON
Accessory pouch
4
Notes on radio
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Features
Sound quality
Telephone Calls
0 These headphones are compatible with a wide range of codecs,
0 You can also make hands-free phone calls by pairing these
including the high sound quality aptX, AAC and SBC. These
headphones automatically select the optimum compatible codec
for your Bluetooth device (smartphone or tablet) so you can
enjoy high-grade wireless sound. Additionally, aptX is Low
Latency compatible so you can enjoy videos and gaming without
audio lag.
headphones to a Bluetooth compatible mobile phone. Equipped
with CVC (Clear Voice Capture) technology which suppresses
echoes enabling low-noise phone calls.
Functions
0 You can enjoy listening to music wirelessly by connecting these
headphones to your Bluetooth device. Playback operations and
volume adjustment can be performed for the paired audio device
using the headphones.
0 When the noise cancelling function is turned on, you can hear
clear audio sound even if you are in a noisy location such as
inside a train.
0 You can connect to an audio device that is not equipped with
Bluetooth using the supplied cable, or in case Bluetooth is not
allowed or the battery runs out.
5
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Features and functions
qw
w
D Charge/NC (Noise Cancell) indicator
0 Blinks red according to the charging status. (v p. 7)
0 Lights white when the noise cancelling function is on. (v p. 21)
q
E Charging port
Connect the supplied USB cable to charge the headphones.
F Stereo mini jack (3.5 mm)
Connection socket for the supplied audio cable.
e
r
t
G Control button
0 Turns the power on/off and pairs the headphones with Bluetooth
devices. (v p. 11)
0 Operates the audio device that is connected using Bluetooth.
(v p. 19)
H Bluetooth Indicator
Indicates the connection status with the Bluetooth device.
y
u
R
Q0
L
J Call microphone
K Call button
Controls call operations on the paired mobile phone. (v p. 22)
Q1
.
i
o
I Volume button (+/–)
Adjusts the volume up and down. (v p. 19)
A L/R Indicator
B Noise cancelling microphone
C Noise cancelling function toggle switch
Turns the noise cancelling function on/off.
6
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Charging
When using the headphones for the first time after purchase or when the
remaining battery is low, connect the headphones to a computer or a USB
to AC power adapter (not included) using the supplied USB cable.
0 You can connect the headphones to a device using the supplied audio cable to
enjoy listening to music even if the batteries are drained. (v p. 20)
0 The headphones can be used for approximately 20 hours of music playback when
fully charged.
0 You can listen to music from a paired Bluetooth device or make phone calls even
during charging. In this case, noise may occur in the audio from the headphones
depending on the type of computer used.
NOTE
or
.
0 When connecting the USB cable to the charging port, be sure to match the cable
connector with the shape of the socket. Forcing the connector into the socket will
cause damage.
0 A rating of the charging output should be DC 5 V, 2.4 A or less.
0 The usable time of the headphones differs depending on the temperature of the
environment in which they are used and method of use.
0 The power turns off when the USB cable is connected to the headphones during
use. Turn on the power again to continue using the headphones.
The Charge/NC indicator blinks during charging. It takes approximately 3
hours to charge the headphones. (The duration time differs depending on
the charging output.)
.
FF
ON O
100 % charged
: Lights red
50 - 99 % charged : Blinks red at 2-second intervals
0 - 49 % charged
: Blinks red slowly
7
Preparation
Contents
Connections
Operation
o Checking the remaining battery power
When the power is on (“Turning the power on” (v p. 15)), press the
Call button twice to check the remaining battery power.
L
.
R
Remaining battery
Indicator
Beep sound
90 – 100 %
Blinks four times
Four times
60 – 89 %
Blinks three times
Three times
30 – 59 %
Blinks twice
Twice
10 – 29 %
Blinks once
Once
0 The remaining battery power cannot be checked when a phone call is in
progress.
0 When the amount of remaining battery is running low, the indicator
flashes red at three second intervals together with a beeping sound.
0 If the battery runs out during use, a beeping sound is heard and the
power of the headphones turns off.
8
Troubleshooting
Appendix
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Using Audio Guidance (Notification Sounds)
You are notified when an operation has completed correctly by a “beep” or “audio guidance”. The default notification sound is a “beep”. You can switch the
notification sound using the following procedure.
o Switching to Audio Guidance Mode
2
Press and hold the call button and “+” volume button
together for more than 5 seconds.
0 The beep sound is heard and the notification sound is switched to
Press and hold the call button and “-” volume button
together for more than 5 seconds.
0 The beep sound is heard and the notification sound is switched to
audio guidance.
L
End the audio playback or phone call on connected
Bluetooth device, or turn off the Bluetooth function of
the connected Bluetooth device.
the beep sound.
L
R
.
2
1
.
1
o Switching to beep mode
End the audio playback or phone call on connected
Bluetooth device, or turn off the Bluetooth function of
the connected Bluetooth device.
9
R
Preparation
Contents
Connections
Operation
o Switching the Audio Guidance Language
The audio guidance language can be selected from the following
languages. (The default audio guidance language is “English”)
English, Japanese, Chinese, German, French, Italian, Spanish
1
2
End the audio playback or phone call on connected
Bluetooth device, or turn off the Bluetooth function of
the connected Bluetooth device.
Press and hold the call button and control button
together.
0 Audio in each language is played in order while the buttons are
pressed down.
Release the buttons when the language that you want
to select is played.
0 A message informing you that the settings are complete is heard.
Push
L
R
.
3
10
Troubleshooting
Appendix
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Bluetooth operation
Pairing
Registering (Pairing) and connecting a
Bluetooth device
You need to register (pair) a Bluetooth device with the headphones in
advance in order to enjoy listening to wireless music or make phone calls.
You can connect to a Bluetooth device any time after it has been paired.
1
Turning on Bluetooth on your mobile device
NOTE
Pairing needs to be done again in the following cases.
0 When 9 or more devices have been paired with the headphones
These headphones can store pairing information from a maximum of 8 devices.
When 9 or more devices are paired, the new pairing information overwrites the oldest
pairing information in order from the oldest information onwards.
Multiple Bluetooth devices cannot be played back at the same time.
.
Bluetooth ON
0 For details, see the Owner’s Manual of the Bluetooth device that
you want to connect.
11
Contents
Connections
Operation
3
When the headphones power is off, press and hold the
control button for approximately 4 seconds
Troubleshooting
Appendix
Select “DENON AH-GC20” from the list of devices
displayed on the screen of your Bluetooth device
Push
DENON AH-GC20
4 Sec
.
0 The Bluetooth indicator flashes red and blue alternately indicating
.
2
Preparation
When the headphones are paired and connected to an audio device
by Bluetooth, the Bluetooth indicator on the headphones lights blue
for approximately 5 seconds to indicate that the Bluetooth
connection is complete.
that the headphones are in pairing registration mode.
12
Contents
4
Preparation
Connections
Operation
Troubleshooting
Appendix
Reconnecting paired devices
Playing back music on the Bluetooth device
Music played back on the connected Bluetooth device is output from
the headphones.
1
Turning on Bluetooth on your mobile device
0 If the power is on, turn the power off before pairing.
0 The headphones pairing registration mode is cancelled if pairing is not completed
within 3 minutes. In this case, press and hold the control button for more than 5
seconds to turn the power off, and then try pairing again.
0 If you are requested to enter a PIN code (pass key), enter “0000” (four zeros).
.
Bluetooth ON
0 For details, see the Owner’s Manual of the Bluetooth device that
you want to connect.
2
Press and hold the control button for 1 second to turn
the headphones power on
Push
.
1 Sec
0 A beep sound is heard and the Bluetooth indicator lights purple
for approximately 1 second.
0 The Bluetooth function turns on when the power is turned on.
13
Contents
3
Preparation
Connections
Operation
Troubleshooting
Appendix
Deleting pairing information
The headphones automatically connect via Bluetooth
to the Bluetooth device
Delete pairing information if you have made a mistake entering pairing
information or when re-pairing a device.
If the device is not connected, select “DENON AH-GC20” from the
list of devices displayed on the screen of your Bluetooth device.
1
Press and hold the volume + button for more than 5
seconds when the headphones are in pairing
registration mode with the Bluetooth device
0 A beep sound is heard, the Bluetooth indicator flashes purple 5 times,
and the pairing information is deleted.
.
DENON AH-GC20
0 The Bluetooth indicator on the headphones lights blue for
approximately 5 seconds when the Bluetooth connection is
complete.
Playing back music on the Bluetooth device
.
4
Music played back on the connected Bluetooth device is output from
the headphones.
14
Contents
Preparation
Connections
Operation
Turning the power on
Appendix
Turning the power off
Turn on the Bluetooth function of the Bluetooth device that you want to
connect to beforehand.
1
Press and hold the headphones control button for
approximately 1 second
Press and hold the control button for more than 5
seconds
Push
Push
1 Sec
.
5 Sec
0 A beep sound is heard and the Bluetooth indicator lights purple
.
1
Troubleshooting
0 When the pairing information is deleted, the headphones
for approximately 1 second.
automatically switch to pairing registration mode when the power
is turned on.
0 A beep sound is heard and the Bluetooth indicator lights purple
for approximately 1 second.
0 The power turns on and Bluetooth function turns on.
0 The headphones automatically connect via Bluetooth to the
Bluetooth device when the device is already paired with the
headphones. (v p. 13)
0 If the audio cable is connected when the headphones power is on, the power
automatically turns off.
0 A small amount of power is consumed even when the power is off.
0 If the indicator does not light even when the control button is pressed, the batteries
are exhausted. Charge the batteries.
15
Contents
Preparation
Connections
Operation
Wearing the headphones
Adjust the slider to the preferred length.
L
.
R
NOTE
0 Be careful not to trap your fingers, etc. in the moving parts.
0 Do not pull the slider too forcefully.
0 In order to hear the best quality sound, be sure that the ear pads correctly cover
both the left and right ears. If there are gaps between your ears and the
headphone ear pads, sound will leak and the bass level and effectiveness of the
noise cancelling function will be reduced.
16
Troubleshooting
Appendix
Contents
Preparation
Connections
Operation
Simultaneously connecting multiple
Bluetooth devices (Multipoint function)
2
Troubleshooting
Turn off the Bluetooth function of the headphones and
then register (pair) the 2nd Bluetooth device
Two Bluetooth devices can be simultaneously connected to the
headphones, but of these only one device can be used to listen to music
or make phone calls at any time. It is convenient to connect devices that
you use frequently so that you do not need to re-connect each time you
want to switch devices.
Push
4 Sec
o Connecting to a second Bluetooth device
Turn off the Bluetooth function of the paired (first)
Bluetooth device (For details, see the Owner's Manual
of the Bluetooth device that you connected.)
.
1
Appendix
0 See “Registering (Pairing) and connecting a Bluetooth
device” (v p. 11) for details on how to pair devices.
0 The Bluetooth indicator on the headphones lights blue for
approximately 5 seconds when the Bluetooth connection is
complete.
17
Contents
Connections
Operation
Troubleshooting
Appendix
o Switching Bluetooth playback devices
Turn on the Bluetooth function of the 1st Bluetooth
device, and select “DENON AH-GC20” from the list of
devices displayed on the screen
1
2
Stop or pause playback on the current playback device
Start playback on the device that you want to listen to
o Call standby
Simultaneous call standby is possible, but the device that receives the call
first takes priority. Calls cannot be made simultaneously.
DENON AH-GC20
.
3
Preparation
0 This procedure connects two Bluetooth devices to the
headphones.
18
Preparation
Contents
Connections
Operation
Troubleshooting
Appendix
Listening to music
Select track
When using the headphones wirelessly, make sure the Bluetooth function
is set to ON for the Bluetooth device. (For details, see the Owner's Manual
of the Bluetooth device that you connected.)
Next track: Slide in the B direction (towards back of the head)
Previous track: Slide in the C direction (towards face)
Listening to music using a Bluetooth
connection
w e
.
The paired Bluetooth device is controlled using the control button.
Continue sliding towards B for fast-forward playback, and continue sliding
towards C for rewind playback.
NOTE
When the headphones are connected using the audio cable, the Bluetooth function is
automatically turned off and the Bluetooth device cannot be controlled using the
headphones.
Volume adjustment
Increase volume (*1): Press D
Decrease volume (*2): Press E
Playback/pause
Press A once
q
Push
t
.
r
.
The Bluetooth indicator flashes blue during playback.
z1 When the maximum volume is reached, a “beep-beep” sound is heard. The
volume cannot be increased further.
z2 When the minimum volume is reached, a “beep-beep” sound is heard. The
volume cannot be decreased further.
19
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Listening to music using a wired
connection
0 These headphones are compatible with SCMS-T content security standards. You
can use these headphones with SCMS-T compatible mobile phones or devices.
0 In order to listen to music via a Bluetooth connection, the connected Bluetooth
device needs to be A2DP (Advanced Audio Distribution Profile) compatible. (*)
0 In order to control playback on the Bluetooth device, the connected Bluetooth
device need to be AVRCP (Audio Video Remote Control Profile) compatible. (*)
Use the provided audio cable when you are not allowed to use the
Bluetooth function or when the battery runs out.
.
z For details on profiles that the Bluetooth device is compatible with, see the
Bluetooth device Owner’s Manual.
0 The noise cancelling function can be used when the headphones are
connected by the cable as long as the battery remains charged.
NOTE
0 The call operations and audio device playback operations that are available when
connected using Bluetooth cannot be used when the headphones are connected
using the cable.
0 The noise cancellation function may not operate when the headphones are used
with certain portable devices that are equipped with a digital amplifier.
20
Contents
Preparation
Connections
Operation
Decreasing outside noise (Noise
cancell function)
Turn the noise cancelling function toggle switch on.
.
FF
ON O
The Charge/NC indicator lights white when the switch is turned on.
21
Troubleshooting
Appendix
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Conducting phone calls
Calls can be made while you are wearing the headphones. You can hear
the caller’s voice through the headphones, and your voice is picked up by
the built-in microphone in the headphones. The paired Bluetooth
compatible mobile phone is controlled using the Call button.
Answering an incoming call
When an incoming call is received, audio playback is paused and the ring
tone is heard.
Press the call button once to answer the call.
Ending a call
.
Press the call button once during the call.
When a call is ended, playback of the paused track is restarted.
When the headphones are connected using the audio cable, the Bluetooth
function is automatically turned off and calls cannot be made using the
headphones.
Making a call
Dial operations are done on the paired mobile phone. Audio playback is
paused and the call is connected.
22
Contents
Preparation
Connections
Operation
Using the call waiting function
Appendix
Ignoring an incoming call
If you receive a call while another call is already in progress, you can place
the current call (call A) on hold and switch to the new call (call B).
Press and hold the call button for approximately 3 seconds when an
incoming call is received.
Switching a call from the headphones
to a mobile phone
NOTE
Some of mobile phones may not be compatible with these functions.
1
Troubleshooting
Press the Call button once while the call is in progress.
Switch the current call to the mobile phone.
Press the call button three times.
0 This places the current call (call A) on hold and switches to the
new call (call B).
NOTE
The switch operation cannot be used when a call waiting call is received. Switch
using the mobile phone.
When the new call (call B) ends, the unit returns to the call that was on hold (call A).
o To return to the call that is on hold (call A)
1
Press and hold the Call button for around 3 seconds
during the current call (call B).
0 This places the current call (call B) on hold and switches to the
call that was previously on hold (call A).
23
Contents
Preparation
Connections
Operation
Other operations
Incoming call
detected
Answer
In standby mode/
During audio
playback
Voice dial/
Press and hold the call
Voice activated call button
Call in progress
Press the call button once
End call
Press the call button once
Mute on/off
Press the call button twice
0 Press the volume button to adjust the volume of the caller’s voice.
0 The connected Bluetooth device needs to be compatible with either HSP (Headset
Profile) or HFP (Hands-free Profile) in order to use the headphones for conducting
phone calls. (*)
0 The Bluetooth device needs to be compatible with either HFP or HSP and A2DP in
order to conduct calls during audio playback. (*)
z For details on profiles that the Bluetooth device is compatible with, see the
Bluetooth device Owner’s Manual.
24
Troubleshooting
Appendix
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Information
Storage in the carrying case
Airplane use
Remove the cable and plug from the headphones, fold and insert them
into the case.
Use the supplied audio cable and conversion plug for aircraft use in order
to listen to the on-board audio services on an aircraft.
NOTE
NOTE
0 The supplied conversion plug may not be usable depending on the type of aircraft.
0 Do not use these headphones when the use of electric devices on the aircraft is
prohibited, or when the use of personal headphones to listen to on-board music
services is prohibited.
Do not force them into the carrying case. Doing so may damage the headphones.
25
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Troubleshooting
If the headphones do not operate correctly, first check the following items.
Symptom
Cause / Solution
Page
The Bluetooth function of the
headphones does not switch
on.
0 Connect the headphones to a computer using the supplied USB cable to charge the battery.
7
Cannot pair a Bluetooth
device.
0 Move the Bluetooth device that you want to connect closer to the headphones.
-
Cannot connect using
Bluetooth.
0 Check that the power of the headphones is switched on.
15
0 Check that the power of the Bluetooth device is on and the Bluetooth function is enabled.
11
0 Check whether the Bluetooth device is in sleep status.
-
0 Pair the devices again.
11
0 Remove the cable from the headphones if the headphones and Bluetooth device are connected using a
20
0 Check that the power of the headphones is switched on.
15
0 Check that the power of the Bluetooth device is on and the Bluetooth function is enabled.
11
0 Select A2DP as the Bluetooth connection profile on the transmitting Bluetooth device. For details, see the
-
0 Check that audio is being played back on the Bluetooth device.
-
0 Increase the volume. Increase the volume on the Bluetooth device if it is necessary to adjust the volume
19
0 Pair the devices again.
11
cable. The Bluetooth function of the headphones is automatically turned off when the headphones are
connected using a cable.
Sound is not output from the
headphones when connected
using Bluetooth.
Owner’s Manual of the Bluetooth device.
on the Bluetooth device.
26
Contents
Preparation
Connections
Symptom
Operation
Troubleshooting
Appendix
Cause / Solution
Cannot operate the Bluetooth 0 Remove the cable from the headphones if the headphones and Bluetooth device are connected using a
device using the headphones.
cable. The Bluetooth function of the headphones is automatically turned off when the headphones are
connected using a cable.
0 The headphones are reset when the supplied USB cable is connected to the headphones. Pairing
Page
20
-
information with Bluetooth devices is not deleted even when the headphones are reset.
Cannot hear the caller’s voice. 0 When listening to audio through the headphones, press the call button to switch to the call.
22
0 Check that the power of the headphones is switched on.
15
0 Check that the power of the Bluetooth device is on and the Bluetooth function is enabled.
11
0 Select HSP or HFP as the Bluetooth connection profile on the transmitting Bluetooth device. For details,
-
0 Check that the Bluetooth device is set to handle calls through the headphones. For details, see the
-
0 Increase the incoming call volume.
24
0 Increase the volume on the Bluetooth compatible mobile phone.
-
see the Owner’s Manual of the Bluetooth device.
Owner’s Manual of the Bluetooth device.
27
Contents
Preparation
Connections
Operation
Troubleshooting
Appendix
Precautions for Use
0 Be sure to read the Owner’s Manual of the device that you want to connect.
0 Check the volume settings when using the headphones on public transport or in public places and make sure you do not disturb people around you.
0 These headphones are not guaranteed to work with all combinations of Bluetooth devices/mobile phones.
0 These headphones do not support connection with all Bluetooth devices/mobile phones.
0 Bluetooth wireless technology can communicate over a distance of approximately 10 m. However, obstructions (people, metallic objects, walls, etc.)
and radio wave conditions affect the range in which communication is possible.
0 The Bluetooth device that you want to connect must support the same profile as these headphones in order to use the Bluetooth function. For details on
profiles that the Bluetooth device is compatible with, see the Bluetooth device Owner’s Manual.
0 Due to features of Bluetooth wireless technology, playback of audio on the headphones is slightly delayed compared to the voice/audio playback on the
transmitting device.
28
Contents
Preparation
Connections
Operation
Disposal of these headphones
Troubleshooting
Appendix
Trademark information
.
The rechargeable battery built into these headphones can be recycled.
Contact the Denon Customer Service Center for details on disposing of
these headphones.
.
The Bluetooth® word mark and logos are registered trademarks owned
by Bluetooth SIG, Inc. and any use of such marks by D&M Holdings Inc.
is under license. Other trademarks and trade names are those of their
respective owners.
©2013 CSR plc and its group companies.
29
Contents
Preparation
Connections
Operation
Specifications
o Headphone section
Type:
Dynamic type
Drive units:
40 mm
Input impedance:
100 Ω/ohms (Power on)
Sensitivity:
102 dB/mW
Maximum input:
1,000 mW
Playback frequency:
5 – 40,000 Hz
o Bluetooth section
Compatible standards:
Bluetooth 4.0 dual mode
Transmission power:
Max. transmission power 10 mW (Class 1)
Compatible profiles:
A2DP/AVRCP/HSP/HFP
A2DP codec support:
aptX Low Latency/aptX/AAC/SBC
Continuous playback time
Bluetooth function ON +
noise cancellation function ON:
Approx. 20 hours
30
Troubleshooting
Appendix
Contents
Preparation
Connections
Operation
Troubleshooting
o General
Operating temperature range:
Power supply:
Weight:
5 ℃ - 40 ℃
DC 3.7 V (internal lithium polymer rechargeable battery)
275 g
z For purposes of improvement, specifications and design are subject to change without notice.
31
Appendix
www.denon.com
32
D&M Holdings Inc.
3520 10367 00ADB
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