Sennheiser HD 350BT Instruction Manual
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Sennheiser HD 350BT Instruction Manual

Around-ear headphones, bluetooth audio transmitter
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User Manual of Product 1:
Sennheiser HD 350BT Wireless foldable Headphones, Black
User Manual of Product 2:
Sennheiser 508258 BT T100 Bluetooth Audio Transmitter for
Hi-Fi or Home Entertainment Black

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  • Page 1 User Manual of Product 1: Sennheiser HD 350BT Wireless foldable Headphones, Black User Manual of Product 2: Sennheiser 508258 BT T100 Bluetooth Audio Transmitter for Hi-Fi or Home Entertainment Black...
  • Page 2 Use the search function, the navigation (left) or the following links: Start “Product overview” “Getting started” “Using the headphones” “FAQ/If a problem occurs ...” “Specifications” Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark Germany www.sennheiser.com Version: 10/20 A03 HD 350BT | 1...

  • Page 3: Important Safety Instructions

    Preventing damage to health and accidents ▷ Protect your hearing from high volume levels. Permanent hearing damage may occur when headphones are used at high volume levels for long periods of time. Sennheiser headphones sound exceptionally good at low and medium volume levels. ▷...
  • Page 4 This product stores individual settings such as the volume and the Bluetooth addresses of paired devices. This data is required for the operation of the product and is not transferred to Sennheiser or com- panies commissioned by Sennheiser and is not processed.
  • Page 5 Sennheiser does not accept liability for damage arising from misuse or improper use of this product and its attachments/accessories. Sennheiser is not liable for damages to USB devices that are not con- sistent with the USB specifications. Sennheiser is not liable for damages resulting from the loss of con- nection due to flat or overaged rechargeable batteries or exceeding the Bluetooth transmission range.

  • Page 6: Package Contents

    • the Sennheiser Smart Control app for configuring the head- phones and for additional functions www.sennheiser.com/smartcontrol A list of accessories can be found on the HD 350BT product page at www.sennheiser.com. Contact your local Sennheiser partner: www.sennheiser.com > “Service & Support”.

  • Page 7: Product Overview

    Model: SEBT3 Left Right Headband Ear cup joints Ear cups, steplessly adjustable On/off button pressing for 4 seconds activates the Bluetooth pairing mode USB-C socket for charging Volume – button (volume down) Volume + button (volume up) 6 | HD 350BT...
  • Page 8 Incoming call and the rechargeable flashes red battery of the headphones is almost empty If the LED does not light up immediately during charging, clean the charging contacts and charge the headphones until the LED lights up again (> 11). HD 350BT | 7...
  • Page 9 Rechargeable battery is empty. Recharge the headphones. Notes on beeps/acoustic signals The headphones output beeps/acoustic signals for the following functions. Acoustic signal Meaning/headphones... 2x low-pitched beep minimum volume is reached 2x low-pitched beep maximum volume is reached 8 | HD 350BT...

  • Page 10: Getting Started

    USB-A 2. Installing the Smart Control app on your smartphone The Sennheiser Smart Control app allows you to use all functions and settings of the headphones and to e.g. adjust the sound to your liking using the equalizer (> 15).
  • Page 11 Getting started 4. Putting the headphones on and adjusting the headband For good sound quality and best possible wearing comfort, the head- band can be adjusted to properly fit your head (> 17). 10 | HD 350BT...

  • Page 12: Using The Headphones

    (“Recharge headset”). Sennheiser recommends using the supplied USB cable and a com- patible standard USB power supply for charging the headphones. While the headphones are being charged, you can still listen to music or make phone calls.

  • Page 13: Information On The Bluetooth Wireless Connection

    If you pair the headphones with the ninth Bluetooth device, the saved connection profile of the least used Bluetooth device will be over- written. If you want to re-establish a connection with the overwritten Bluetooth device, you have to pair the headphones again. 12 | HD 350BT...
  • Page 14 Using the headphones Paired and connected Bluetooth device Paired Bluetooth device (currently not connected) HD 350BT | 13...
  • Page 15 All active Bluetooth devices in the proximity of your Bluetooth device are displayed. 5. From the list of found Bluetooth devices, select “HD 350BT”. If necessary, enter the default pin code “0000”. 6. If pairing was successful, you hear the voice prompt “Device (1) connected”.

  • Page 16: Installing The Smart Control App

    Installing the Smart Control app To make full use of all the settings and functions of the headphones, you need to have the free Sennheiser Smart Control app installed on your smartphone. Download the app from the App Store or Google Play and install it on your smartphone.

  • Page 17: Switching The Headphones On

    If Bluetooth is activated and the headphones cannot find a paired Bluetooth device within a few minutes, you hear the voice prompt “Lost connection”. The LED flashes red 3x. The headphones switch to standby mode. 16 | HD 350BT...

  • Page 18: Switching The Headphones Off

    – your ears are comfortably covered by the ear pads, – you feel even, gentle pressure around your ears, – a snug fit of the headband on the head is ensured. For optimal sound quality, the ear pads must completely surround your ears. Left Right HD 350BT | 17...
  • Page 19 Voice prompt Meaning “Recharge headset” The rechargeable battery is empty. Recharge the rechargeable battery (> 11). “More than xx hours The remaining battery charge is playtime” displayed in hours. “Recharge headset“ “More than xx hours playtime“ 18 | HD 350BT...

  • Page 20: Adjusting The Volume

    The following music playback functions are only available when the headphones and the device are connected via Bluetooth. Some smartphones or music players may not support all functions. Right Playing/pausing music ▷ Press the center of the 3-way multi-function button 1x. HD 350BT | 19...
  • Page 21 ▷ Dial the desired number on your smartphone. If your smartphone does not automatically transfer the call to the headphones, select “HD 350BT” as the output device on your smartphone (see the instruction manual of your smartphone if necessary). 20 | HD 350BT...
  • Page 22 Press 1x Puts the active call on hold and accepts an incoming call Press 2x Ends the active call and accepts an incoming call Press 2x Toggles between active call and call on hold HD 350BT | 21...

  • Page 23: Using The Voice Assistant/Voice Dialing

    In the Smart Control app, select the desired sound effects. The sound effects are stored in the headphones. These sound settings are active even without using the Smart Control app, i.e. when you are using another Bluetooth device. 22 | HD 350BT...

  • Page 24: Storing And Transporting The Headphones

    Using the headphones Storing and transporting the headphones ▷ Fold up the headphones. HD 350BT | 23...

  • Page 25: Care And Maintenance

    Replacing the ear pads For reasons of hygiene, you should replace the ear pads from time to time. Spare ear pads are available from your Sennheiser partner. 1. Peel the ear pad up and away from the ear cup. 2. Assign the right ear pad to the right ear cup and the left ear pad to the left ear cup.

  • Page 26: Installing Firmware Updates

    Care and maintenance Installing firmware updates Firmware updates can be downloaded free of charge from the Inter- net using the Sennheiser Smart Control app. Sennheiser recom- mends to always install the latest firmware version to ensure the best performance of your product.
  • Page 27 If a problem occurs that is not listed in the FAQ section or if the prob- lem cannot be solved with the proposed solutions, please contact your Sennheiser partner for assistance. To find a Sennheiser partner in your country, search at www.sennheiser.com > “Service & Support”. Leaving the Bluetooth transmission range Wireless calling and streaming are only possible in the Bluetooth transmission range of your smartphone.

  • Page 28: Specifications

    Bluetooth Version Bluetooth 5.0 compatible, class 1, BLE Transmission frequency 2,402 MHz to 2,480 MHz GFSK, π/4 DQPSK, 8DPSK Modulation Output power 12.6 mW (max) Profiles HSP, HFP, AVRCP, A2DP Codec aptX, aptX LL, AAC, SBC HD 350BT | 27...

  • Page 29: Manufacturer Declarations

    Manufacturer Declarations Manufacturer Declarations Warranty Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months on this product. For the current warranty conditions, please visit our website at www.sennheiser.com or contact your Sennheiser partner. In compliance with the following requirements •...
  • Page 30 Qualcomm Technologies International, Ltd., registered in the United States and other countries, used with per- mission. Other product and company names mentioned in the user documen- tation may be the trademarks or registered trademarks of their respective holders. HD 350BT | 29...
  • Page 31 Manufacturer Declarations 30 | HD 350BT...
  • Page 32 BT T100 Bluetooth® Audio Transmitter Instruction Manual...
  • Page 33 2 | Bluetooth® Audio Transmitter...

  • Page 34: Table Of Contents

    Contents Contents Important safety instructions ..............2 The Bluetooth® Audio Transmitter .............. 4 Features ......................4 Package includes ..................6 Product overview ...................7 Overview of the transmitter ................ 7 Getting started ..................... 8 Setting up the Bluetooth® Audio Transmitter ...........8 Connecting the Bluetooth® Audio Transmitter to an audio source ..9 Powering the transmitter ................

  • Page 35: Important Safety Instructions

    Always keep the product dry and do not expose it to extreme temperatures to avoid corrosion or deformation. Only use attachments/accessories/spare parts supplied or recom- mended by Sennheiser. Clean the product only with a soft, dry cloth. Use the product with care and store it in a clean, dust-free environment.
  • Page 36 It is considered improper use when this product is used for any application not named in the associated instruction manuals and product guides. Sennheiser does not accept liability for damage arising from abuse or misuse of this product and its attachments/accessories.

  • Page 37: The Bluetooth® Audio Transmitter

    The Bluetooth® Audio Transmitter The Bluetooth® Audio Transmitter The Bluetooth® Audio Transmitter delivers precise sound reproduction through Qualcomm® aptX™ audio technology. Expect an even better audio-video experience at home through your favorite headphones. Features • Supports Qualcomm® aptX™ for true Hi-Fi sound •...
  • Page 38 The Bluetooth® Audio Transmitter Bluetooth The Bluetooth® Audio Transmitter complies with the Bluetooth 4.2 standard and is compatible with all Bluetooth 1.1, 1.2, 2.0, 2.1, and 3.0 devices with Advanced Audio Distribution Profile (A2DP). aptX With aptX audio coding, you can be assured of crisp, pure and full stereo sound.

  • Page 39: Package Includes

    Digital optical cable Analog audio cable Quick Quick guide Guide Safety Safety guide Guide A list of accessories can be found at www.sennheiser.com. For information on suppliers, contact your local Sennheiser partner: www.sennheiser.com > “Sales Partner”. 6 | Bluetooth® Audio Transmitter...

  • Page 40: Product Overview

    Product overview Product overview Overview of the transmitter Analog Analog Analog Analog Input Input Input Input Digital Optical Digital Optical Digital Optical Digital Optical USB-B USB-B 3.5 mm 3.5 mm 3.5 mm 3.5 mm Selection Selection Selection Selection Power Power Power Power Multifunction button...

  • Page 41: Getting Started

    Getting started Getting started Setting up the Bluetooth® Audio Transmitter Choose a suitable place near your audio source. Avoid placing the transmitter and other wireless devices too close to one another to prevent interference. Do not place the transmitter close to metal objects such as shelf bars, reinforced concrete walls, etc.

  • Page 42: Connecting The Bluetooth® Audio Transmitter To An Audio Source

    Getting started Connecting the Bluetooth® Audio Transmitter to an audio source You can simultaneously connect 2 different audio sources (e.g. a TV or PC and a stereo hi-fi system) to the transmitter. The transmitter features a digital as well as an analog audio input. If you connect 2 audio sources, you can toggle between them using the Input Selection switch (see page 15).
  • Page 43 Getting started Connection to an audio source using the digital optical cable To achieve the best possible listening experience, we recommend that you connect the Bluetooth® Audio Transmitter to your home cinema or hi-fi system using the supplied digital optical cable. Your Bluetooth®...
  • Page 44 Getting started Connection to an audio source using the 3.5 mm analog audio cable Some TV models mute the loudspeakers when you connect the transmitter to the headphone socket. Check in the menu of your TV to see if the muting function can be deactivated.

  • Page 45: Powering The Transmitter

    Getting started Powering the transmitter 1. Connect the USB micro B plug of the supplied USB power cable to the USB-B port of the transmitter. 2. Connect the USB plug to the USB port of your TV or PC. For older TV models without built-in USB port, connect the USB plug to an external USB power adapter and connect to the power source.

  • Page 46: Pairing The Transmitter With The Headphones

    Pairing the transmitter to the headphones 1. Set your headphones to pairing mode. If you are using Sennheiser headphones, the headphones’ LED usually flashes blue and red during pairing. 2. Press the the Multifunction button on the transmitter for 4 seconds.

  • Page 47: Using The Transmitter

    Using the transmitter Using the transmitter Switching the transmitter on The transmitter goes into pairing mode when switched on for the first time. 1. Press the Multifunction button for 2 seconds. The LED lights up red. Hold Switching the transmitter off 1.

  • Page 48: Selecting An Audio Input

    Using the transmitter Selecting an audio input If both the analog and the digital audio input are connected to an audio source, the transmitter allows you to toggle between the two inputs. WARNING Danger due to high volume levels! Listening at high volume levels can lead to permanent hearing defects.

  • Page 49: Connecting The Transmitter With The Headphones

    Using the transmitter Connecting the transmitter to the headphones Connect the headphones to the transmitter to watch a movie or listen to music from your TV, PC, or home entertainment system. 1. Switch the paired headphones on. 2. Switch the transmitter on. The LED lights up red.

  • Page 50: Playing Music/Videos

    Using the transmitter Playing music/videos If your audio source and headphones support the aptX or aptX LL codec, the Bluetooth® Audio Transmitter plays your music wirelessly in stunning audio quality. If the audio source and headphones do not support any of these audio codecs, the audio is played in standard quality.

  • Page 51: Care And Maintenance

    Care and maintenance Care and maintenance CAUTION Liquids can damage the electronics of the product! Liquids entering the housing of the product can cause a short- circuit and damage the electronics. Keep all liquids away from this product. Do not use any solvents or cleaning agents. To clean the Bluetooth®...

  • Page 52: Troubleshooting

    You may also contact your local Sennheiser service partner for assistance. To find a Sennheiser service partner in your country, visit www.sennheiser.com. Bluetooth® Audio Transmitter | 19...

  • Page 53: Clearing The Previously Paired Setting

    Troubleshooting Leaving the Bluetooth transmission range Wireless streaming is only possible in the Bluetooth transmission range of your Bluetooth devices. The transmission range largely depends on environmental conditions such as wall thickness, wall composition etc. With a free line of sight, the transmission range of most Bluetooth devices is up to 30 meters.

  • Page 54: Specifications

    Specifications Specifications BT T100 Bluetooth® Audio Transmitter Input voltage & current 5 V⎓ 500 mA Number of transmission channels Occupied bandwidth 1 channel 1 MHz Frequency response 20 Hz - 20 kHz Weight 85 g Temperature range operation: 0 to 40°C (32 to 104°F) Dimensions 93 x 93 x 27 mm (approx.) Bluetooth...

  • Page 55: Trademarks

    Trademarks The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Sennheiser electronic GmbH & Co. KG is under license. Qualcomm aptX and aptX Low Latency are products of Qualcomm Technologies International, Ltd.
  • Page 56 Sennheiser electronic GmbH & Co. KG Am Labor 1, 30900 Wedemark, Germany www.sennheiser.com Publ. 04/18, A01...

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