SUB-ZERO NH300BT Noise Cancelling Headphones User Manual

SUB-ZERO NH300BT Noise Cancelling Headphones

WARNING!

• Do not open cover. No user-serviceable parts inside. Refer servicing to qualified service personnel
• Do not place the product in a location near a heat source such as
• a radiator, or in an area subject to direct sunlight, excessive dust, mechanical vibration or shock
• The product must not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on the product No naked flame sources, such as lighted candles, should be
• placed on the product
• Allow adequate air circulation and avoid obstructing vents (if present) to prevent internal heat build-up. The ventillation must not be impeded by covering the appliance with items such as
• newspapers, table-cloths, curtains etc.

INTRODUCTION

Thank you for purchasing the SubZero NH300BT Bluetooth Noise Cancelling Headphones. To get the most out of your product, please read this manual carefully.

BOX CONTENTS

•  1 x SubZero NH300BT Bluetooth Noise Cancelling Headphones
•  1 x Zipped carry case
•  1 x 3.5mm TRS Jack cable
•  1 x USB charging cable
•  1 x Airplane entertainment system adapter

FEATURES

• Active noise cancelling technology, with comfortable padded design.
• Foldable and travel-friendly, with carry case and airplane adapter.
• Stay connected – make and receive mobile calls wirelessly.
• Wireless Bluetooth listening with 25 hours of battery life.
• Passive mode available to conserve battery life.

FUNCTIONS

1.  ANC ON/OFF

   •  Turns the Active Noise Cancellation feature on or off.

2.  VOLUME DECREASE / PREVIOUS SONG

   •  To decrease the volume, tap the volume down key.
   • To select the previous song, press and hold the volume down key

3.  MULTIFUNCTION BUTTON

   •  BLUETOOTH ON/OFF: When Bluetooth is off, press and hold the button until you hear an ascending tone. When Bluetooth is on, firstly ensure no audio is being emitted through the headphones, then press and hold the button until you hear a descending tone.
   •  ANSWER/END CALL: When a phone call comes in, short press the button to answer it, or long press for 2 seconds to reject the call. To end a call, short press the button again.
   •  PLAY/PAUSE: To play a song, select the track in your paired music player and press the Play/ Pause key on the headset. To pause or resume playing a song, press the Play/Pause key again.

4.  VOLUME INCREASE / NEXT SONG

   •  To increase the volume, tap the volume up key. There will be beep tone when maximum volume is reached.
   • To select the next song during playback, press and hold the volume up key

5.  MIC

   • Microphone for voice calls and Active Noise cancellation.

6.  3.5mm JACK INPUT

   • Connect the supplied 3.5mm Jack cable to use the headphones in a wired configuration with suitable audio devices.

7.  LED

   • RED = Charging.
   • BLUE = Bluetooth is connected.
   • GREEN = Active Noise Cancellation is on.
   • ALTERNATING BLUE/RED = Bluetooth in pairing mode.
   • LED BLUE/GREEN = Bluetooth connected & Active Noise Cancellation is on.

8.  USB C CONNECTION

   • Connect the supplied USB C power cable here. Please ensure a suitable power source is used, such as a computer/laptop or USB
     mains adapter.

9. Adjust the headband length manually, there is

10.  3cm of extension.

11. Align the headband so it sits centrally on the user’s head.

12. Readjust the headband so the headphone driver cups sit over the ears and the unit fi ts comfortably on your head.

CHARGING THE BATTERY
The headset contains a micro USB input that can be used to connect to your computer or other charging device. Plug the micro USB end of the included cable into the connector on the left earphone, then plug the other end into your computer or charging device. The indicator light will turn red whilst charging, when fully charged this light will change to blue. Charge time is around 3 hours on an empty battery.

ACTIVE NOISE CANCELLING
Hold the ANC button for 1 second, the green LED light will turn on indicating that the noise cancelling feature is turned on, this is available in both wired and wireless modes. Hold the ANC button for 1 more second to disable this mode.

BLUETOOTH ON/OFF AND PAIRING
To turn on Bluetooth mode, hold the MFB button for 3 seconds, this will engage Bluetooth searching mode and display blue and red flashing lights. To turn off this mode, hold for a further 3 seconds. To pair, ensure that your phone or other Bluetooth device is switched on. Switch on the headset and activate pairing mode as described above, activate the Bluetooth feature on your device and select the SZ-NH300BT option. When successfully connected the blue light will remain static. If the headset has been previously paired with another device, the headphones will automatically connect to the device when headset is switched on. If the headphones do not pair within 30 seconds, the Bluetooth pairing mode will be deactivated. Press the MFB button again to reactivate pairing mode To disconnect the headset from your device, switch off the headset or disconnect in the Bluetooth menu of your device.

ADJUSTING VOLUME
Turn the volume up or down using a long press on the volume +/- buttons whilst listening to music or during a call. When you reach maximum volume a warning tone will play.

APPLICATION
The SubZero SZ-NH300BT Noise Cancelling Headphones can make and receive calls hand
free with a compatible mobile phone. The device should be within 10 metres of the headphones. This headset is compliant with Bluetooth Specification 4.1 support with the following profiles: Headset Profile (HSP) V.16, Hands-free Profile (HFP) V.15, Advanced Audio Distribution Profile (A2DP) V1.0 and Audio Video Remote Control Profile (AVRCP) V1.4 Input Rating 5V DC, 0.5a.

CALLS
To make a call, use your mobile phone in the normal way when the headset is connected via the Bluetooth. Quickly press the MFB twice to call the last number in your call list. When receiving a phone call quickly press MFB to answer or hold for 1.5 seconds to reject the call. To end a call, press the MFB at any time.

LISTENING TO MUSIC
To listen to music, connect the headphones to a phone or compatible music player that supports A2DP Bluetooth. The available music functions depend on your Bluetooth devices. If you receive or make a call whilst listening to music, the music will pause until the call ends.
To play a song, select the music player and press the play/pause key. To skip to the next track, press the volume up key quickly. To skip to a previous song, quickly press the volume down button. To increase the volume, press and hold the corresponding key.

PASSIVE MODE
You can use the SZ-NH300BT headphones as wired headphones to save battery life. Simply input the included cable into the bottom of the
left headphone and connect to your MP3 player or computer.

LOW BATTERY
When the battery voltage is low there will be a warning beep every 60 seconds. When the battery is too low it will switch off automatically.

SPECIFICATIONS

• Driver ………….. 40mm
• Impedance ……… 32Ω
• Driver Unit
• Frequency ………. 20Hz – 20kHz
• Headset Sensitivity … 97dB+/-3dB
• Microphone
• Sensitivity ……….. -42dB
• Bluetooth Version …. Bluetooth V4.1
• Radio Frequency
• Coverage ……….. 2.402gHz – 2.480gHz
• Transmit Range …… 10 Metre
• (without obstruction) Active Noise
• Cancelling ………. Up to 20 – 25db between
• Status Indication. . . . . . LED (Blue slow flash under
• Bluetooth mode)
• Pairing Products. . . . . . Bluetooth computer HFP,
• A2DP, AVRCP Bluetooth
• protocol, USB Bluetooth
• adapter, Bluetooth cell
• phone, etc
• Battery. . . . . . . . . . . . . . Rechargeable Lithium ION
• Battery, 3.7v 300mAH
• Charge. . . . . . . . . . . . . . Computer USB interface,
• Output DC 5V/300Ma
• Charger
• Charging Time. . . . . . . 2 hours
• Operating Hours . . . . . 25 hours of wireless listening
• and 100 hours of
• Standby Time

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