How to Add and Use with a 2nd Pair of Headphones of HT4186 – Avantree Support

Step 1. Turn the TV OFF (Smart TV streaming service affect pairing)

Step 2. Turn on the HT4186 Set

2.1. Power ON the Audikast Plus transmitter.

2.2. Power ON the NB16 Headphone.

2.3. Wait for them to re-connect. The LED indicator on the headphone and the transmitter will both turn SOLID BLUE.

Step 3. Pair the transmitter with the 2^nd Headphone

3.1. Get your 2^nd pair of Headphones into Bluetooth Pairing Mode.

! NOT only turn it on. You need to manually push it into pairing mode. (Most Bluetooth devices enter pairing mode automatically when pairing with the 1^st device. But when pair with a 2^nd device, you need to manually push it into the pairing mode.)

For Avantree headphones, the LED flashes RED & BLUE under the pairing mode. You should also hear a "Pairing" voice prompt from the headphones.

Non-Avantree Headphones: Look it up by Brand or google it. For example, search “Sony XM4 Bluetooth Pairing mode” and you will find “To pair a second or subsequent device, press and hold the (power) button of the headset for 7 seconds or more to enter pairing mode.

3.2. Get the Transmitter into Bluetooth Pairing Mode.

Press & Hold button ”2”/ "B" until you see the Bluetooth indicator flashing RED & BLUE.

3.3. Put them close to each other and WAIT for them to pair & connect.

Once connected, the Bluetooth icon close to "2" / "B" on the transmitter will turn SOLID BLUE.

Step 4. Reconnect during Future Use:

4.1. Turn on the transmitter and NB16 headphones. Wait for them to connect first.

4.2. Then turn on the 2^nd headphones. Wait for 5-10 sec and they will re-connect.

(If not, click the MFB button on the 2^nd headphone and Wait for 5-10 seconds. Or click the "2" / "B" on the transmitter and Wait for 5-10 seconds. They should re-connect.)

Tips: If you prefer to use the 2^nd pair of headphones ONLY the next time, please follow this procedure:

a) Turn on the HT4186 Set, let them connect; b) Turn on the 2^nd pair of headphones and wait for it to connect; c) Turn off the NB16 Headphone & use the 2^nd headphones only

If this guide does not help, please contact us at support@avantree.com with the following info:

1.Brand and make of your 2^nd pair of headphones.

2.The LED status & voice prompt of the headphones’ pairing mode

3.Confirm your TV was off. No working Wifi device within 2 feet range

4.Confirm your Headphone is not connected with another Bluetooth devices, e.g. Cellphone

5.Which one gets out of the pairing mode first, the transmitter or the headphone?

We will get back to you within 1 working day.