Instruction manual HD 450BT
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KG Am Labor 1 30900 Wedemark Germany www.sennheiser.com Version: 05/20 A02 HD 450BT | 1 HD 450BT Around-ear headphones Model: SEBT4 Instruction manual 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: 05/20 A02 HD 450BT | 1 HD 450BT Around-ear headphones Model: SEBT4 Instruction manual 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.
Instruction manual HD 450BT
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.... 2 | HD 450BT in environments where Bluetooth® wireless transmission is permitted. Important safety instructions Important safety instructions ▷ Read this instruction manual carefully and completely before using the product. ▷ Always include this instruction manual when passing the product on the outside of the ear cups. ▷ Use only attachments/accessories/spare parts supplied or recommended by Sennheiser. ▷ Clean the product only with a soft, dry cloth. ▷ Use the product...
.... 2 | HD 450BT in environments where Bluetooth® wireless transmission is permitted. Important safety instructions Important safety instructions ▷ Read this instruction manual carefully and completely before using the product. ▷ Always include this instruction manual when passing the product on the outside of the ear cups. ▷ Use only attachments/accessories/spare parts supplied or recommended by Sennheiser. ▷ Clean the product only with a soft, dry cloth. ▷ Use the product...
Instruction manual HD 450BT
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... volume and the Bluetooth addresses of the app. Dispose of the product and is required for free via an Internet connection. When not using the product / rechargeable batteries for extended periods of time, charge them to sunlight and do not connect to provide and transfer suitable firmware updates: MAC address, Bluetooth Low Energy UUID, Bluetooth name of the product, firmware version of the product and version of paired devices. If the device...
... volume and the Bluetooth addresses of the app. Dispose of the product and is required for free via an Internet connection. When not using the product / rechargeable batteries for extended periods of time, charge them to sunlight and do not connect to provide and transfer suitable firmware updates: MAC address, Bluetooth Low Energy UUID, Bluetooth name of the product, firmware version of the product and version of paired devices. If the device...
Instruction manual HD 450BT
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... product and its attachments/accessories. Before putting into operation, please observe the respective country-specific regulations. 4 | HD 450BT It is considered improper use when the product is not liable for damages resulting from misuse or improper use /Liability These headphones have been designed as music playback and phone calls via Bluetooth wireless technology. They are not consistent with the USB specifications. Sennheiser is used for Bluetooth compliant devices...
... product and its attachments/accessories. Before putting into operation, please observe the respective country-specific regulations. 4 | HD 450BT It is considered improper use when the product is not liable for damages resulting from misuse or improper use /Liability These headphones have been designed as music playback and phone calls via Bluetooth wireless technology. They are not consistent with the USB specifications. Sennheiser is used for Bluetooth compliant devices...
Instruction manual HD 450BT
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... > "Service & Support". phones and for configuring the head- Package contents Package contents HD 450BT around-ear headphones Model: SEBT4 USB cable with USB-C connector Analog audio cable with 3.5 mm jack plug and 2.5 mm jack plug, length approx. 1.5 m Carry case Quick guide Safety guide Online you can find: • this detailed instruction manual and additional information www.sennheiser.com/download • the Sennheiser Smart Control app for additional functions www.sennheiser.com/smartcontrol A list of accessories can be found on the HD 450BT product...
... > "Service & Support". phones and for configuring the head- Package contents Package contents HD 450BT around-ear headphones Model: SEBT4 USB cable with USB-C connector Analog audio cable with 3.5 mm jack plug and 2.5 mm jack plug, length approx. 1.5 m Carry case Quick guide Safety guide Online you can find: • this detailed instruction manual and additional information www.sennheiser.com/download • the Sennheiser Smart Control app for additional functions www.sennheiser.com/smartcontrol A list of accessories can be found on the HD 450BT product...
Instruction manual HD 450BT
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Product overview Product overview HD 450BT 1 6 | HD 450BT 2 2 3 Right R Left L B A 0 9 8 7 C 4 65 Headband Ear cup joints Ear cups, steplessly adjustable On/off button for the headphones and the active noise cancellation ANC pressing for 4 seconds activates the Bluetooth pairing mode pressing 1x activates/deactivates ANC LED Input for charging when a cable is connected, flight mode is activated/Bluetooth is deactivated USB-C socket for analog audio cable;
Product overview Product overview HD 450BT 1 6 | HD 450BT 2 2 3 Right R Left L B A 0 9 8 7 C 4 65 Headband Ear cup joints Ear cups, steplessly adjustable On/off button for the headphones and the active noise cancellation ANC pressing for 4 seconds activates the Bluetooth pairing mode pressing 1x activates/deactivates ANC LED Input for charging when a cable is connected, flight mode is activated/Bluetooth is deactivated USB-C socket for analog audio cable;
Instruction manual HD 450BT
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... a device via Bluetooth flashes red/ blue are in Bluetooth pairing mode are not connected to a device via 3x flashes red 3x Bluetooth or the connection has been lost 3x flashes purple 3x ANC is activated/deactivated During phone calls LED flashes blue flashes red Meaning Incoming call Incoming call functions Voice assistant button Ear pads Speech microphones (2 pcs.) for phone calls Overview of the headphones is almost empty If the LED does not light up immediately during charging, clean...
... a device via Bluetooth flashes red/ blue are in Bluetooth pairing mode are not connected to a device via 3x flashes red 3x Bluetooth or the connection has been lost 3x flashes purple 3x ANC is activated/deactivated During phone calls LED flashes blue flashes red Meaning Incoming call Incoming call functions Voice assistant button Ear pads Speech microphones (2 pcs.) for phone calls Overview of the headphones is almost empty If the LED does not light up immediately during charging, clean...
Instruction manual HD 450BT
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... prompts The headphones output voice prompts for the following functions. Voice prompt "Power on" "Power off" "Device (1) (2) connected" "Lost connection" "Pairing" "Call rejected" "Call ended" "More than xx hours playtime" "Recharge headset" Meaning/headphones are switched on are switched off are connected to device 1 or 2 are not connected via Bluetooth are in Bluetooth pairing mode incoming call rejected call ended Rechargeable battery has the stated charge level Rechargeable battery is reached 8 | HD 450BT
... prompts The headphones output voice prompts for the following functions. Voice prompt "Power on" "Power off" "Device (1) (2) connected" "Lost connection" "Pairing" "Call rejected" "Call ended" "More than xx hours playtime" "Recharge headset" Meaning/headphones are switched on are switched off are connected to device 1 or 2 are not connected via Bluetooth are in Bluetooth pairing mode incoming call rejected call ended Rechargeable battery has the stated charge level Rechargeable battery is reached 8 | HD 450BT
Instruction manual HD 450BT
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Installing the Smart Control app on your smartphone via Bluetooth (> 12). Hold 4s HD 450BT | 9 Charging the rechargeable battery The headphones' rechargeable battery is not fully charged upon delivery. USB-C USB-A 2. "Sennheiser Smart Control" 3. adjust the sound to e.g. Connecting the headphones to a Bluetooth device Connect the headphones to your smartphone The Sennheiser Smart Control app allows you to use all functions and settings of the headphones and to your liking using the headphones for the first time, charge the rechargeable battery for...
Installing the Smart Control app on your smartphone via Bluetooth (> 12). Hold 4s HD 450BT | 9 Charging the rechargeable battery The headphones' rechargeable battery is not fully charged upon delivery. USB-C USB-A 2. "Sennheiser Smart Control" 3. adjust the sound to e.g. Connecting the headphones to a Bluetooth device Connect the headphones to your smartphone The Sennheiser Smart Control app allows you to use all functions and settings of the headphones and to your liking using the headphones for the first time, charge the rechargeable battery for...
Instruction manual HD 450BT
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... charge status: HD 450BT | 11 Once the headphones are being charged, the LED lights up (> 7). A complete charging cycle takes approx. 2 hours. In this case, however, the charging time may be ordered separately). Connect the USB-A connector to a corresponding socket of a USB power source (*to recharge the headphones ("Recharge headset"). Make sure that the USB power source is connected to music or make phone calls. Using the headphones Using the headphones Information on the rechargeable battery and the charging...
... charge status: HD 450BT | 11 Once the headphones are being charged, the LED lights up (> 7). A complete charging cycle takes approx. 2 hours. In this case, however, the charging time may be ordered separately). Connect the USB-A connector to a corresponding socket of a USB power source (*to recharge the headphones ("Recharge headset"). Make sure that the USB power source is connected to music or make phone calls. Using the headphones Using the headphones Information on the rechargeable battery and the charging...
Instruction manual HD 450BT
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... the instruction manual of the least used Bluetooth device will play your audio source supports one of up to use . If you have been paired. On switch-on the headphones for use the Bluetooth wireless connection, you must register both devices (headphones and e.g. Otherwise the headphones will be able to eight Bluetooth devices with Bluetooth 5.0. This process is fully charged 5x, then goes off . Using the headphones LED 5x Meaning lights up red Rechargeable battery is being charged flashes blue Rechargeable battery...
... the instruction manual of the least used Bluetooth device will play your audio source supports one of up to use . If you have been paired. On switch-on the headphones for use the Bluetooth wireless connection, you must register both devices (headphones and e.g. Otherwise the headphones will be able to eight Bluetooth devices with Bluetooth 5.0. This process is fully charged 5x, then goes off . Using the headphones LED 5x Meaning lights up red Rechargeable battery is being charged flashes blue Rechargeable battery...
Instruction manual HD 450BT
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Alternatively, you need to have the free Sennheiser Smart Control app installed on your smartphone to the headphones. HD 450BT | 15 Installing the Smart Control app To make full use your smartphone to scan the following Internet site: www.sennheiser.com/smartcontrol "Sennheiser Smart Control" ▷ Connect your smartphone. You hear the voice prompt "Lost connection". To delete the Bluetooth pairing list of the headphones, > 29. Download the app from the App...
Alternatively, you need to have the free Sennheiser Smart Control app installed on your smartphone to the headphones. HD 450BT | 15 Installing the Smart Control app To make full use your smartphone to scan the following Internet site: www.sennheiser.com/smartcontrol "Sennheiser Smart Control" ▷ Connect your smartphone. You hear the voice prompt "Lost connection". To delete the Bluetooth pairing list of the headphones, > 29. Download the app from the App...
Instruction manual HD 450BT
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... connected via Bluetooth, or the audio cable (provided that the ear cups properly fit around your headphones' sound quality is sufficiently charged). as motor or fan noise, is deactivated. 20 | HD 450BT Press and hold the on active noise cancellation ANC Due to ensure proper noise cancellation, do not cover the microphone openings of the ear cups. ANC is significantly reduced, but can simply use the headphones - Using the headphones Information on /off button...
... connected via Bluetooth, or the audio cable (provided that the ear cups properly fit around your headphones' sound quality is sufficiently charged). as motor or fan noise, is deactivated. 20 | HD 450BT Press and hold the on active noise cancellation ANC Due to ensure proper noise cancellation, do not cover the microphone openings of the ear cups. ANC is significantly reduced, but can simply use the headphones - Using the headphones Information on /off button...
Instruction manual HD 450BT
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... Bluetooth device. These sound settings are using the Smart Control app, i.e. Use the audio cable when: • wireless transmission is available, voice dialing may be activated). ▷ Ask the voice assistant your question or make a request. during aircraft take-off and landing, • the headphone's rechargeable battery is activated (* depending on the system or app on your audio source does not offer a Bluetooth connection. The active noise cancellation...
... Bluetooth device. These sound settings are using the Smart Control app, i.e. Use the audio cable when: • wireless transmission is available, voice dialing may be activated). ▷ Ask the voice assistant your question or make a request. during aircraft take-off and landing, • the headphone's rechargeable battery is activated (* depending on the system or app on your audio source does not offer a Bluetooth connection. The active noise cancellation...
Instruction manual HD 450BT
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... or within the warranty period, you suspect that the ear pad is displayed (> 7), stop using the product, disconnect it from the product. ▷ Do not use any Sennheiser service partner. Place the ear pad around the ear cup so that the rechargeable battery is obviously defective or if a charging error/battery error is fixed in rechargeable battery Sennheiser ensures and guarantees that the seam of the ear pad points downwards. 4. HD 450BT | 27 If...
... or within the warranty period, you suspect that the ear pad is displayed (> 7), stop using the product, disconnect it from the product. ▷ Do not use any Sennheiser service partner. Place the ear pad around the ear cup so that the rechargeable battery is obviously defective or if a charging error/battery error is fixed in rechargeable battery Sennheiser ensures and guarantees that the seam of the ear pad points downwards. 4. HD 450BT | 27 If...
Instruction manual HD 450BT
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Care and maintenance Installing firmware updates Firmware updates can be downloaded free of your product. ▷ Connect the headphones to ensure the best performance of charge from the Internet using the Sennheiser Smart Control app. Sennheiser recommends to always install the latest firmware version to your smartphone and start the Smart Control app (> 15). ▷ The app provides information on available firmware updates and guides you through the installation process. 28 | HD 450BT
Care and maintenance Installing firmware updates Firmware updates can be downloaded free of your product. ▷ Connect the headphones to ensure the best performance of charge from the Internet using the Sennheiser Smart Control app. Sennheiser recommends to always install the latest firmware version to your smartphone and start the Smart Control app (> 15). ▷ The app provides information on available firmware updates and guides you through the installation process. 28 | HD 450BT
Instruction manual HD 450BT
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... the Bluetooth transmission range Wireless calling and streaming are only possible in Bluetooth pairing mode. 1 ON 2 OFF Hold 2s ON Hold 4s "Pairing" Hold 5s HD 450BT | 29 FAQ/If a problem occurs ... If you immediately re-enter the Bluetooth transmission range, the connection is not listed in your smartphone. Restart the headphones by switching them off button and the 3-way multi-function button for assistance. The LED flashes...
... the Bluetooth transmission range Wireless calling and streaming are only possible in Bluetooth pairing mode. 1 ON 2 OFF Hold 2s ON Hold 4s "Pairing" Hold 5s HD 450BT | 29 FAQ/If a problem occurs ... If you immediately re-enter the Bluetooth transmission range, the connection is not listed in your smartphone. Restart the headphones by switching them off button and the 3-way multi-function button for assistance. The LED flashes...
Instruction manual HD 450BT
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... battery (if applicable) and/or the packaging indicates that the radio equipment type SEBT4 is available at the end of such marks by e.g. KG. Android and Google play are registered trademarks owned by Bluetooth SIG, Inc. Trademarks Sennheiser is a service mark of Google Inc. App Store is a registered trade mark of with permission. 32 | HD 450BT and other countries, used...
... battery (if applicable) and/or the packaging indicates that the radio equipment type SEBT4 is available at the end of such marks by e.g. KG. Android and Google play are registered trademarks owned by Bluetooth SIG, Inc. Trademarks Sennheiser is a service mark of Google Inc. App Store is a registered trade mark of with permission. 32 | HD 450BT and other countries, used...
Quick Guide HD 450BT
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... appareil compatible Bluetooth | Sincronizar y conectar con un dispositivo Bluetooth | 1 OFF OFF "Connected" "Lost connection" Emparelhar e ligar a um dispositivo Bluetooth | Met een Bluetoothapparaat pairen en verbinden | Abbinamento e collegamento a un dispositivo Bluetooth | Parring og tilslutning til en Bluetooth-enhed | Anslut till en Bluetooth-enhet 2 20 cm 3 "Pairing" Menu Bluetooth on Bluetooth off Menu Add Device Right R Hold 4s 4 HD 450BT Keyword: 0000 Menu Bluetooth on Bluetooth off USB-C USB-A Instruction manuals and product support Bedienungsanleitungen und...
... appareil compatible Bluetooth | Sincronizar y conectar con un dispositivo Bluetooth | 1 OFF OFF "Connected" "Lost connection" Emparelhar e ligar a um dispositivo Bluetooth | Met een Bluetoothapparaat pairen en verbinden | Abbinamento e collegamento a un dispositivo Bluetooth | Parring og tilslutning til en Bluetooth-enhed | Anslut till en Bluetooth-enhet 2 20 cm 3 "Pairing" Menu Bluetooth on Bluetooth off Menu Add Device Right R Hold 4s 4 HD 450BT Keyword: 0000 Menu Bluetooth on Bluetooth off USB-C USB-A Instruction manuals and product support Bedienungsanleitungen und...
Quick Guide HD 450BT
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...ıyla eşleştir ve bağla Bluetooth 1 OFF OFF "Connected" "Lost connection" Bluetooth Menyandingkan dan menghubungkan dengan perangkat Bluetooth 20 cm 2 3 "Pairing" Menu Bluetooth on Bluetooth off Menu Add Device Right R Hold 4s 4 HD 450BT Keyword: 0000 Menu Bluetooth on mobile phone. USB-C USB-A Audio cable 2.5 mm 3.5 mm Carry Case Kuulokkeiden lataaminen Ładowanie słuchawek | Kulaklık setini şarj etme Mengisi baterai...
...ıyla eşleştir ve bağla Bluetooth 1 OFF OFF "Connected" "Lost connection" Bluetooth Menyandingkan dan menghubungkan dengan perangkat Bluetooth 20 cm 2 3 "Pairing" Menu Bluetooth on Bluetooth off Menu Add Device Right R Hold 4s 4 HD 450BT Keyword: 0000 Menu Bluetooth on mobile phone. USB-C USB-A Audio cable 2.5 mm 3.5 mm Carry Case Kuulokkeiden lataaminen Ładowanie słuchawek | Kulaklık setini şarj etme Mengisi baterai...