Why is there no audio signal in my Sennheiser HD 4.40BT?
If you are not getting any audio signal in your Sennheiser Headphone, here are a few things to check: * Ensure your headphones are paired with your device. If they aren't, pair them again. * Increase the volume, as it might be too low. * Make sure your headphones are switched on.
What to do if Sennheiser HD 4.40BT does not respond to button presses?
If your Sennheiser Headphone isn't responding to any button presses, it might not be functioning properly. Try restarting the headphones by switching them off and then on again.
General| Impedance | 18 Ω |
|---|---|
| Ear coupling | Circumaural |
| Headphone frequency | 18 - 22000 Hz |
| Headphone sensitivity | 113 dB |
| Total Harmonic Distortion (THD) | 0.5 % |
| Microphone type | Built-in |
| Microphone frequency | 100 - 10000 Hz |
| Microphone direction type | Omnidirectional |
| Carrying case | Yes |
| Cables included | Audio (3.5mm) |
| Headset type | Binaural |
| Product type | Headset |
| Product color | Black |
| Wearing style | Head-band |
| Volume control | Digital |
| Recommended usage | Calls/Music |
| Bluetooth version | 4.0 |
| Bluetooth profiles | APT-X |
| Connectivity technology | Wired & Wireless |
| Headset connectors supported | 3.5mm stereo |
| Brand compatibility | Any brand |
| Number of products included | 1 pc(s) |
Protect hearing, keep away from pacemakers, keep out of reach of children.
Keep dry, avoid extreme temperatures, use genuine parts, clean with dry cloth.
For mobile devices with Bluetooth, not for unauthorized applications.
Warnings about battery abuse, proper disposal, charging, and temperature limits.
Closed circumaural design, Bluetooth, NFC, long battery life, foldable.
Explains Bluetooth, NFC, and aptX® audio coding for wireless communication.
Identifies parts like headband, ear cups, NFC panel, and LED indicators.
Explains pictograms used for various button press actions.
Details LED light patterns for operation, pairing, and call status.
Details functions of power, multifunction, and volume buttons with page references.
Instructions on how to increase or decrease the volume using the dedicated buttons.
Instructions for charging, including time, LED indicators, and battery status.
Step-by-step guide for connecting the charging cable and charging the device.
Steps for pairing via Bluetooth and NFC, including device compatibility.
Detailed NFC pairing process using a smartphone as an example.
Standard Bluetooth pairing steps, including PIN code and LED indications.
Procedure to deactivate Bluetooth and disconnect the headphones.
How to adjust the headband for optimal comfort and sound quality.
Procedures to switch the headphones on and off, including voice prompts and LED feedback.
Instructions on how to increase or decrease the volume using the dedicated buttons.
Instructions for playing music wirelessly via Bluetooth, including aptX support.
How to play/pause, skip tracks, fast-forward, and rewind music using controls.
Procedures for making, answering, rejecting, ending calls, and holding calls.
How to transfer calls between phone and headphones, and redialing functionality.
How to activate voice control for voice commands via Bluetooth.
How to connect and use the audio cable when Bluetooth is restricted.
Steps for replacing the ear pads for hygiene.
How to fold and store the headphones to prevent damage.
Information on battery replacement during and after the warranty period.
Table of common issues like no power, no audio, connection problems, and their fixes.
Explains Bluetooth transmission range limitations and re-establishing connection.
Steps to clear previously paired Bluetooth devices.
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