Keywords: HT4189, 4189, short range, audio cuts
Avantree HT4189 work range reaches up to 100ft/30m, which may varies due to different environment.
Here are the MOST common causes of short range/audio cut in-and-out：
1. Unstable Bluetooth connection
Occasionally a Bluetooth pairing can connect but for some reason it's unstable, e.g. headphones or BT transmitter connected to other unwanted BT devices. To fix this try clearing paired history of BOTH the transmitter and headphone.
2. Wireless Signal Interference
Other wireless devices in the vicinity of the transmitter may be affecting its range. To check whether this is the case try isolating the transmitter by temporarily turning off all other nearby wireless devices such as an Apple TV, a Chromecast stick, a Roku stick, any other RF audio transmitters etc.
You may test in one different room / environment: connect the transmitter by wire to a mobile phone then transmit a song to your Bluetooth headphones/speaker. In this way you can see the ‘true’ range of the transmitter. If it works well, then we need to troubleshoot which of the other wireless devices in the environment is affecting its performance. If the ‘true’ range is very short, then we might be looking at a defective unit, in which case we will send you a replacement.
3. Source issue
When you play an internet source from PC, Mac or cellphone, quite often, the audio cuts are Internet bandwidth / speed related. Please test with local source Bluetooth streaming and check again.
4. Affected by other cables
Keep the audio cable connecting the transmitter and your audio source separate from other cables, do not tangle it with other cables, e.g. TV power cable.
5. Do not place the transmitter behind TV/audio source.