How To Connect Rexton Hearing Aids To TV: A Technical Setup Guide For Seamless Audio

How To Connect Rexton Hearing Aids To TV: A Technical Setup Guide For Seamless Audio

Types of hearing aids | Rexton

To connect Rexton hearing aids to a television, users must utilize the Rexton Smart Transmitter 2.4 or a compatible Bluetooth-direct protocol such as ASHA for Android or MFi for iOS. This process involves pairing the hearing instruments during their initial three-minute power-up window to the transmitter via 2.4 GHz wireless technology, ensuring low-latency stereo streaming directly to the wearer's ears.


Hardware Synchronization and Pre-Connection Checklist

Before attempting to synchronize your Rexton hearing instruments with a television, it is critical to verify the hardware compatibility of both the audio source and the hearing aids. Rexton hearing aids, particularly those on the BiCore, M-Core, and MyCore platforms, utilize a proprietary 2.4 GHz wireless protocol that is distinct from standard Bluetooth "Classic" found in most smartphones. This allows for significantly lower battery consumption and reduced audio lag, which is essential for lip-syncing accuracy.

The most reliable method for TV connection involves the Rexton Smart Transmitter 2.4. This bridge device converts the television’s audio output (optical or analog) into a digital signal that the hearing aids can interpret. Without this transmitter, direct connection is only possible if your television supports the ASHA (Audio Streaming for Hearing Aids) protocol, which remains rare in the current smart TV market.



Technical Requirements and Inventory



  • Hearing Instrument Compatibility: Ensure your Rexton devices are Bluetooth-enabled (e.g., BiCore R-Li, M-Core R-Li, or Emerald models).
  • The Rexton Smart Transmitter 2.4: This is the primary hardware interface required for non-ASHA compatible televisions.
  • Audio Output Cables: You will need either a TOSLINK (Optical/Digital) cable, which is the gold standard for audio fidelity, or a 3.5mm to RCA adapter for older analog sets.
  • Power Supply: A standard USB power adapter or an active USB port on the back of the television to power the transmitter.
  • The Rexton App: Downloaded on a smartphone (iOS or Android) to manage the TV volume independently of the hearing aid's physical buttons.
  • Estimated Setup Time: 10 to 15 minutes.
  • Proximity Limit: Pairing must occur within 1 meter (3 feet) of the transmitter.

Step-by-Step Configuration of the Rexton TV Streaming System

The following procedure outlines the integration of the Smart Transmitter 2.4 into your home entertainment environment and the subsequent pairing of your hearing instruments.



Step 1: Physical Installation of the Smart Transmitter

The quality of your audio stream depends heavily on the physical connection between the TV and the transmitter. Locate the "Digital Audio Out" (Optical) port on the back of your television.



  1. Remove the protective plastic caps from both ends of the TOSLINK optical cable.
  2. Insert one end into the TV’s Optical Out port and the other into the "Toslink" input on the back of the Rexton Smart Transmitter.
  3. Connect the micro-USB power cable to the transmitter and plug the other end into a power source.
  4. Observe the LED indicators on the front of the transmitter. A steady green light typically indicates the device is powered on.

Pro-Tip: If using the optical connection, ensure your television’s audio output format is set to "PCM" or "Stereo" in the TV settings menu. Rexton transmitters generally do not decode multi-channel Dolby Digital or DTS bitstreams.



Step 2: Initializing the Pairing Window

Hearing aids enter a "discovery mode" only during the first few minutes after being powered on. To prepare your Rexton hearing aids for pairing, you must perform a power cycle.



  1. For Rechargeable Models: Place both hearing aids into the charger for five seconds, then remove them. This triggers the startup sequence.
  2. For Battery-Operated Models: Open the battery doors, wait five seconds, and then snap them shut.
  3. Once the devices are powered on, they will remain in pairing mode for exactly three minutes. You must complete Step 3 within this timeframe.


Step 3: Establishing the 2.4 GHz Wireless Link

With the hearing aids in discovery mode, you must now command the Smart Transmitter to look for the devices.



  1. Place both hearing aids in very close proximity to the Smart Transmitter (ideally touching or within a few inches).
  2. Press and hold the pairing button on the transmitter (usually located on the back or side, marked with a Bluetooth or "Pair" icon).
  3. Watch the LED display on the transmitter. It will flash blue to indicate it is searching.
  4. Once the pairing is successful, the LED will turn solid blue for a few seconds and then transition to a steady green or a different color indicating an active stream.
  5. Put the hearing aids in your ears. You should hear a confirmation tone or the TV audio immediately.


Step 4: Fine-Tuning via the Rexton App

To optimize the user experience, you should integrate the TV stream into the Rexton App on your smartphone.



  1. Open the Rexton App on your mobile device.
  2. Navigate to the "Programs" or "Connected Devices" section.
  3. You should now see a new program labeled "Television" or "TV Transmitter."
  4. Select this program to start the stream. The app allows you to adjust the balance between the TV audio and the surrounding room microphones, ensuring you can still hear a spouse or a doorbell while watching a movie.

Warning: Avoid placing the Smart Transmitter 2.4 directly behind the television or inside a metal cabinet. Metal and large electronic components can interfere with the 2.4 GHz signal, leading to audio dropouts or "crackling" sounds.


How to Use and Wear Rexton Hearing Aids | HearUSA Support

How to Use and Wear Rexton Hearing Aids | HearUSA Support

Technical Specifications and Connectivity Protocols

Rexton hearing aids utilize different transmission protocols depending on the accessory and the source device. Understanding these metrics helps in identifying why certain connections may feel superior to others.



Feature Rexton Smart Transmitter 2.4 Direct ASHA/MFi (Direct to TV) Smart Mic (Multi-Link)
Primary Protocol 2.4 GHz Proprietary BLE (Bluetooth Low Energy) Bluetooth Classic to 2.4 GHz
Audio Latency < 20 ms (Indistinguishable) 40 - 150 ms (Variable) 30 - 50 ms
Max Range 10 - 15 Meters 5 - 7 Meters 10 Meters
Audio Quality High-Fidelity Stereo Variable Mono/Stereo High-Quality Mono/Stereo
Power Consumption Low (Optimized for HA) Moderate High (Internal Mic usage)
Output Support Optical (TOSLINK) & RCA Software-based 3.5mm Jack only

Troubleshooting Common Rexton TV Connectivity Failures

Despite the robust nature of 2.4 GHz technology, environmental factors and software glitches can disrupt the streaming experience.



  • Audio Latency or Lip-Sync Delay



    • Root Cause: The television is processing audio internally (e.g., "Surround Sound" modes) before sending it to the transmitter.
    • Actionable Fix: Enter the TV’s "Expert Audio Settings" and enable "Game Mode" or "Bypass Mode" for the audio output. Ensure the digital output is set to PCM.
  • Intermittent Audio Cut-outs



    • Root Cause: Electromagnetic interference from a nearby Wi-Fi router or microwave, or the transmitter is placed too low to the ground.
    • Actionable Fix: Relocate the Smart Transmitter at least 3 feet away from the Wi-Fi router. Elevate the transmitter to a "line-of-sight" position relative to where you sit.
  • Hearing Aids Will Not Pair to Transmitter



    • Root Cause: The hearing aids are already actively connected to a smartphone’s Bluetooth, which is "locking" the pairing channel.
    • Actionable Fix: Temporarily turn off Bluetooth on your smartphone before attempting to pair the hearing aids with the TV transmitter. This releases the internal antenna to accept new pairing handshakes.
  • No Sound Despite Successful Pairing



    • Root Cause: The optical cable is not seated correctly, or the TV volume for "Digital Out" is muted/disabled.
    • Actionable Fix: Check for the red glow at the end of the optical cable to verify the TV is sending a signal. Ensure the TV's "Internal Speakers + Optical" setting is enabled if you want others in the room to hear the TV simultaneously.

Frequently Asked Questions



Can I connect my Rexton hearing aids directly to a Smart TV without a transmitter?

Direct connection is only possible if your TV supports the ASHA protocol (standard in some newer Sony and Samsung models) or if you are using an Apple TV 4K with MFi support. For the vast majority of users, the Smart Transmitter 2.4 is required to bridge the gap between standard TV Bluetooth and the specialized low-energy protocol used by hearing aids.



How many people can connect to a single Rexton Smart Transmitter?

One of the primary advantages of the Rexton Smart Transmitter 2.4 is its broadcast capability. An unlimited number of Rexton (and compatible Signia/Vibe) 2.4 GHz hearing aids can pair with a single transmitter simultaneously, making it ideal for households where multiple people wear hearing instruments.



Why does the volume change when I move to another room?

Rexton hearing aids utilize environmental sensors to adjust gain. If you move away from the transmitter, the signal strength drops, and the hearing aids may revert to your "Universal" or "Automatic" program. To maintain a consistent stream, remain within 30 feet of the transmitter and ensure no thick masonry walls are between you and the device.



Can I use the TV transmitter and my phone at the same time?

Yes, Rexton's multi-streaming capabilities allow the hearing aids to prioritize signals. If you are watching TV and receive a phone call, the hearing aids will typically pause or duck the TV audio to allow you to answer the call, then resume the TV stream once the call is terminated.

Enhance Your Auditory Experience

Optimizing your home theater with Rexton technology significantly reduces listening effort and improves speech intelligibility during complex media playback. For further assistance with advanced acoustic settings or firmware updates, consult your local hearing care professional to ensure your devices are running the latest software version.


Rexton TeleCare - remote hearing care | Rexton

Rexton TeleCare - remote hearing care | Rexton

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