TC417

Top Questions

• Avantree TV Headphones Troubleshooting for no sound / not working.

  Avantree Wireless Transmitter / TV Headphone Set is not working for you, no sound? Troubleshooting Tips:

  ·       Headphone and Transmitter Base should be well Connected

  1.     Avantree headphone should say "Welcome to Avantree. Connected." and shows Solid Blue light.

  2.     Transmitter should show Solid Light indicating ‘Connected’?

  3.   How to connect to Apple Airpods Max, Pro, Bose, Beats, Jabra, Plantronics, Sennheiser, Sony...

  ·       Proper Audio Signal should be sent to the Transmitter (95% issues are here)

  o   Is your transmitter signal detecting LED SOLID (Signal coming through OK) or Flashing (No Valid Signal)?      

  o   Check Your TV setting again (Samsung TV, LG TV, Sony TV, Vizio TV…)

  o   For AUX / RCA connections

  •  Use your headphone with a wire to listen. If no sound, then no signal coming from that port

  •  Transmitter base is set to AUX

  o   For Optical connection,

  •  Transmitter base is set to OPT

  •  Make sure your TV HDMI ARC port is not connected

  •  Unplug and Plug the optical cable from transmitter

  •  Start your Netflix / Amazon Prime Program first before change to PCM

  •  Contact your TV manufactory and ask “How to change the TV setting so i can get audio signal out of my port?”

  ·       More complicated set up? Check How to use with Sound Bar & AV Receiver Set up Guide here 

  •          Using a Samsung Smart TV? Check this FAQ

  For further assistance, please contact us via support@avantree.com  

   

  If you contact us via email, please try to provide the following images for quick diagnosis:

  1. Photo of the transmitter box and headphone, both turned on with their LED lights (Solid Blue?)

  2. Photo of TV Audio output ports & TV HDMI ports 

  3. Photo of TV Screen with Sound Settings page - with Digital Optical Out selected (if you use optical cable)

  4. Photo of TV Screen with HDMI in & Out Audio Format both set to PCM 

  5. If you also have AV Receiver and Soundbar connected, please draw a simple diagram how you connect them and the audio signal flow. (Note: The following diagram is just for your reference, you can draw it by hand.)

   

  We will get back to you within 1 working day.

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• Audio Delay / Lag - Visual Not Synced with Audio, Echo with TV Speaker

  Audio latency is, essentially, the time it takes for audio data to move from your audio source to your headphones. Wired headphones produce an imperceptible amount of lag—about 5-10ms worth. Within this 5-10ms window, your phone or computer processes the digital audio data, converts said data to an analog audio signal, and then streams the signal through your headphones or speakers.

  Bluetooth devices spend a lot more time to do this “processing”. The source device compresses the data and wirelessly transmits it. Then the headphones or speakers receive the data and decompresses it.

  The wireless communication program is called a “Codec”. It acts like a specific language that the sender and the receiver agree to communicate with. Different codecs lead to different audio delay times.

  Bluetooth Audio Codec	Audio delay
  aptX™ HD	≥ 250ms
  aptX™ Low Latency	~ 40ms
  aptX™	~ 70ms
  FastStream	~ 40ms
  SBC (Sub Band Codec)	~ 220ms

   

  To benefit from the lowest amount of audio delay, BOTH the sender and the receiver must support either the aptX Low Latency or the Fast Stream Codec. If only one side supports aptX Low Latency but the other side does not, the streaming will use the next available codec supported by both devices, such as SBC or aptX. You will find that your Bluetooth audio and TV speaker audio are not in sync.

   

  How do you confirm whether your Bluetooth headphones support the aptX Low Latency or FastStream codec? Simply check its specifications in its product listing or manual. Apple Headphones and nearly all true wireless earbuds do not support aptX Low Latency. Some headphones claim that they do, unless they are a reputable brand, you still need to double check from  Certified aptX Low Latency device list from www.aptx.com.

   

  There is another factor that you need to keep in mind regarding audio delay, which is Codec priority. Many Bluetooth devices have a Codec "priority" list, meaning that it prioritizes using some Codecs over others when connecting to other devices. For example, the DG80 Dongle's Codec priority goes like this: 1.FastStream, 2.aptX low latency, 3.aptX, 4.SBC. When connecting with other devices, the dongle will go through these codecs one by one until it finds one that is supported by the device it's connecting to.

   

  Where this gets tricky is if you are connecting multiple devices to each other. Bluetooth devices will use the lowest common denominator supported by all devices, not necessarily the fastest codec. This can result to a slower codec being used, even though your headphones support a faster codec. Read more here.

   

  If you suspect that this is an issue, a fix is to factory reset / clear the pairing history of the devices experiencing audio delay. This may fix the issue.

   

  What if my headphone is not low latency supported? You have the following options:

  1. Change to a Low Latency supported headphone;

  2. Get a headphone / transmitter Set. We have plenty of options HERE. 

  3. Live with the slight lip sync delay. 

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• Can't Pair with my Bluetooth Headphones, Speaker

  If you are unable to connect a Bluetooth headphone / speaker to your Avantree transmitters, try the following:

  1.     Turn your smart TV, as well as other close by wi-fi device off to avoid interference. 

  2.     Make sure the previous paired devices, e.g. Mobile Phone, PC, are Bluetooth-off.

  3.     Make sure you put the Bluetooth headphones / speakers into PAIRING MODE (most people failed here!)

  4.     Factory Reset (Clear pairing history!! Not only turn on / off) BOTH devices and try again. 

  5.     If you tried all above but still cannot pair, there might be an unknown aggressive Bluetooth device in your environment. You may try the pairing process in a different location. If both devices are portable, take them into your car, drive a bit away from home, and use car cigarette lighter as the power source and pair them up.

  Normally, if the transmitter / adapter leaves the pairing mode first, it indicates you have something else in the environment disturbing the pairing. Please clear pairing history of the transmitter or try from a different location)

  If the Bluetooth headphone / speaker leaves the pairing mode first, it indicates previous paired device is not turned off. Please check the manual and clear the pairing history of the device. 

  If both devices stay in pairing mode for a long time but not connected, it is most likely caused by wi-fi interference.

   

  If it is still not working, please submit the Cannot Pair Verification Form, and we will get back to you within 1 working day. 

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• How to Connect to a TV / AV Receiver, etc.
  Television, AV Receiver, Non-Bluetooth Laptop/Computer

  • Connecting to a TV

    Step 1: Connect the TC417 to a power source using the Micro-USB cable we provided, and long-press the power button for about 3 seconds to power it ON.

    

    
    
    

    Step 2: Make sure that the TX/RX switch is at the "TX" position.

    The LED indicator should now be flashing GREEN.

    

    
    
    

    Step 3: Pairing your Headphones / Speaker to TC417.

    Please refer to THIS ARTICLE for a more detailed step-by-step instruction.

    
    
    

    Step 4: Connecting to TV.

    The TC417 supports Digital Optical, Auxiliary (3.5mm,) and RCA (RED/WHITE.) Please check and see which one your TV supports; any ONE of the three will work.

    • Option A - Digital Optical
      • Take the Optical Cable that we provided in the box, and plug one end of it into the "Digital Audio Out" or "Optical" port on the back of your TV.
      • 
      • Plug the other end of the cable into the Optical Port labeled "SPDIF IN" on the back of your TC417 transmitter.
      • 
      • Make sure that the SPDIF/AUX Switch on the side has been set to "SPDIF" position.
      • 
      • Go to your TV's SOUND settings, make sure that the AUDIO OUTPUT has been set to "EXTERNAL SPEAKER." Some TVs automatically complete this step for you, some don't.
      • 
      • Also in your TV's SOUND settings, make sure that the AUDIO FORMAT has been set to "PCM." Some TVs automatically complete this step for you, some don't.
      • 

    • Option B - Auxiliary (3.5mm)
      • Take the 3.5mm Auxiliary Cable that we provided in the box, and plug one end of it into the "HEADSET" or "3.5mm AUDIO OUT" port on the back of your TV.
      • 
      • Plug the other end of the cable into the AUX Port on the back of your TC417 transmitter.
      • 
      • Make sure that the SPDIF/AUX Switch on the side has been set to "AUX" position.
      • 
      • Go to your TV's SOUND settings, make sure that the AUDIO OUTPUT has been set to "HEADSET." Some TVs automatically complete this step for you, some don't.
      • 
    • Option C - RCA (RED / WHITE)
      • Please note that ONLY the ones that are labeled "AUDIO OUT" can be used; the other ones won't work.
      • Plug the RED/WHITE end of the RCA Cable into the RCA AUDIO OUT port on the back of your TV.
      • 
      • Plug the BLACK end of the RCA Cable into the AUX Port on the back of your TC417 transmitter.
      • 
      • Make sure that the SPDIF/AUX Switch on the side has been set to "AUX" position.
      • 
      • Go to your TV's SOUND settings, make sure that the AUDIO OUTPUT has been set to "EXTERNAL SPEAKER." Some TVs automatically complete this step for you, some don't.
      • 
        
        

    Now you should be good to go! Please either refer to the Video Tutorials below or email us at support@avantree.com if you have more questions!

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  • Connecting to an AV Receiver

    While TC417 CAN be used with most AV Receiver, please DO NOT PLUG THE TC417 INTO ANY OF THE RED / WHITE PORTS ON THE BACK OF A RECEIVER! This may permanently damage the product.
    
    

    Step 1: Connect the TC417 to a power source using the Micro-USB cable we provided, and long-press the power button for about 3 seconds to power it ON.

    

    
    
    

    Step 2: Make sure that the TX/RX switch is at the "TX" position.

    The LED indicator should now be flashing GREEN.

    

    

    Step 3: Pairing your Headphones / Speaker to TC417.

    Please refer to THIS ARTICLE for a more detailed step-by-step instruction.

    

    Step 4: Connecting to AV Receiver

    There are 2 ways to connect the Oasis plus to your AV Receiver: DIGITAL OPTICAL OUT, or PHONES.

    • Option A - DIGITAL OPTICAL
      • Take the Optical Cable that we provided in the box, and plug one end of it into the "Digital Audio Out" or "Optical Out" port on the back of your AV Receiver.
      • 
      • Plug the other end of the cable into the Optical Port labeled "SPDIF IN" on the back of your TC417 transmitter.
      • 
      • Make sure that the SPDIF/AUX Switch on the side has been set to "SPDIF" position.
      • 
    • Option B - PHONES (Usually on the front of the AV Receiver)
      • Take the 3.5mm Auxiliary Cable that we provided in the box, and plug one end of it into the PHONES Port on your AV Receiver. You'll need to use a 6.35mm to 3.5mm converter here (needs to be purchased separately.)
      •  
      • Plug the other end of the cable into the AUX Port on the back of your TC417 transmitter.
      • 
      • Make sure that the SPDIF/AUX Switch on the side has been set to "AUX" position.
      • 

    
    For more questions, please send us an email at support@avantree.com, we'll have someone assist you as soon as possible.

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• How to Pair with a Bluetooth Headphone / Speaker

  Step 1: Connect the TC417 to a power source using the Micro-USB cable we provided, and long-press the power button for about 3 seconds to power it ON.

  

  
  
  

  Step 2: Make sure that the TX/RX switch is at the "TX" position.

  The LED indicator should now be flashing GREEN.

  

  
  
  

  Step 3: Getting the TC417 into "Bluetooth Pairing Mode."

  • First-Time Use: If the TC417 is brand new, and this is your first time using it, it should automatically enter pairing mode when you turn it on. You'll see the LED indicator flashing GREEN rapidly.
  • Non-First-Time Use: If this is NOT the first time you've used it, simply enter it into pairing mode manually by Pressing & Holding the "Pair" Button for 2 seconds. You'll see the LED indicator flashing GREEN rapidly.

  
  
  

  Step 4: Put your Bluetooth Headphones / Speaker into Bluetooth Pairing Mode as well.

  Avantree Headphones/Speakers/Receivers: The LED indicator on the Headphone/Speaker/Receiver flashing RED & BLUE.

  Non-Avantree Devices: Look it up by Brand.
  
  

  Step 5: Keep your headphone / speaker close to TC417, and give them a few seconds.

  Sometimes it may take up to 30 seconds for the two devices to successfully connect, so please be patient.

  Once successfully paired, you'll see the LED indicators stop flashing and turn SOLID GREEN.

  
  
  

  For your Next Use:

  There's no need to re-pair the TC417 each time.

  The TC417 automatically reconnects to the MOST RECENTLY PAIRED device, given that both the TC417 and the device have been turned ON. It may take up to 20 seconds or so to reconnect, please be patient.

  If they don't reconnect automatically, please do so manully through your Headphones / Speaker. Please refer to your Headphone/Speaker's user manual for a more detailed instruction.
  
  

  Reconnecting to TWO Devices (Dual Connection)

  • Turn your first device (headphones / speaker) ON.
  • Wait for a few seconds, and turn the TC417 ON.
  • After the first device has successfully reconnected, turn the second device ON.
  • If case the auto-reconnection fails, you may try manual reconnection through your headphones / speaker.
    
    

  If you're still confused, you may either refer to one of the Video Tutorials below, or email us at support@avantree.com, we'll have someone assist you immediately.

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• Can I have audio through my TV's Speakers AND Wireless Headphones at the Same Time?

  Hearing audio through the TV speaker AND the headphones at the same time

  If you'd like to get sound on both your TV speakers AND headphones at the same time, it DEPENDS on whether the TV is able to support getting sound out to two sources simultaneously. It is NOT related to the transmitter. The transmitter receieves the sound from your TV's output and streams it over to your Bluetooth headphones or speakers.

  However, if you connect the transmitter to your TV via OPTICAL port and you can see the following options under the SOUND OUTPUT settings on your TV...

  

  You can actually get sound simultaneously! Follow these steps:

  1. Go to SOUND OUTPUT and change this to OPTICAL / EXTERNAL SPEAKER
  2. Once there's sound going out into the headphones, go back to SOUND OUTPUT and change this back to TV SPEAKER

  If your TV doesn't support simultaneous output to both the TV speakers and headphones, here are some alternative methods you can consider:

  For Audio Transmitter Users:

  Solution 1: Connect the Transmitter to a TV box / AV Receiver instead

  If you have a TV box (DirecTV, Xfinity, Bluray Player, etc.), you should be able to find audio output ports on the back of them. Try to connect the Avantree transmitter directly here instead of the TV. This method essentially allows you to "go around" the TV's built-in speakers.

  Con: will not work on streaming apps if you have a Smart TV or streaming device

  

  For all users:

  Solution 2: For users with TV Sondbar / AV Receiver

  2.1 Use Transmitters with Passthrough Function

  If you have a Soundbar or Stereo Receiver, check your transmitter to see if it supports passthrough. If not, you can return your current product and consider purchasing one of these: Orbit, Oasis Plus, Opera, Medley 6018, HT5009, HT5006, Duet, or Quartet.

  Our industry leading "Passthrough" function allows you to put the transmitter/base between a TV and an external speaker and have audio come out from both devices AT THE SAME TIME.

  

  

  2.2 Use Audio splitter/extractor

  • For AUX Output - Use an audio splitter (e.g. Avantree TR302) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is a 3.5mm audio splitter

  

  • For Optical AUDIO OUT - Use an optical splitter (e.g. J-Tech splitter) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is an optical audio splitter.

  

  • For HDMI ARC OUT - Use an HDMI Audio Extractor (e.g. HAX05) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is an ARC supported HDMI audio extractor.

  

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