1. Chigadzirwa Pamusoroview
The Avantree HT41866-Q system provides a wireless audio solution for TV listening, allowing two users to enjoy TV audio simultaneously with independent volume control. This system includes a Bluetooth transmitter and two pairs of neckband earbuds, designed for clear sound and minimal audio delay.
Zvinokosha:
- TV Kuenderana: Works with TVs featuring optical (TOSLINK), AUX (3.5mm), or built-in Bluetooth audio outputs.
- Dual Earbud Support: Connects two pairs of earbuds simultaneously for shared listening.
- Independent Volume Control: Each earbud pair has its own volume adjustments.
- Kunonoka Kwakaderera: Utilizes aptX Adaptive for audio-visual synchronization with less than 50ms delay.
- Nyore Setup: Automatic pairing between transmitter and earbuds after initial connection.
2. Package Zviri mukati
Tarisa kuti zvinhu zvese zvakanyorwa pazasi zvinosanganisirwa mupakeji yako:
- Audikast-3 Transmitter
- 2 Pairs of NB16-Q Earbuds
- 3 Type C Power & Charging Cables (for Transmitter & Earbuds)
- Optical Audio Cable
- AUX 3.5mm Audio Cable

Image: All components included in the Avantree HT41866-Q package, including the Audikast 3 transmitter, two pairs of NB16-Q earbuds (one black, one with red accents), optical audio cable, two Type C charging cables (1.5m and 0.5m), and an AUX 3.5mm audio cable.
3. Chigadzirwa Dhidhiyo
Familiarize yourself with the main components of your Avantree HT41866-Q system.

Mufananidzo: Kupfuuraview of the Avantree HT41866-Q system, showing the Audikast 3 transmitter, two pairs of neckband earbuds, and various connection cables (optical, 3.5mm AUX, USB-C).
Transmitter Ports:

Image: Close-up of the Avantree Audikast 3 transmitter showing the DCIN (power), OPTICAL, AUX, and ON/OFF switch ports. Below, a diagram indicates compatibility with TVs having optical (TOSLINK), AUX (3.5mm), or built-in Bluetooth, and incompatibility with TVs having HDMI port only or simultaneous playback through soundbar & earbuds.
- DCIN: Power input port (USB-C).
- OPTICAL: Digital audio input (TOSLINK).
- AUX: Analog audio input (3.5mm).
- VABISA/KUDZIMA: Power switch for the transmitter.
- Mabhatani Evhorumu (+/-): Adjust volume for connected earbuds.
- Pairing Buttons (1 & 2): Initiate pairing for Earbud 1 and Earbud 2.
4. Setup Guide
4.1. Connecting the Transmitter to Your TV
The Avantree Audikast-3 transmitter supports multiple audio input methods. Choose the method compatible with your TV.
Option A: Optical (TOSLINK) Connection (Recommended for Digital Audio)
- Connect one end of the optical audio cable to the OPTICAL OUT chiteshi paTV yako.
- Connect the other end of the optical audio cable to the OPTICAL input on the Audikast-3 transmitter.
- Connect the transmitter to a power source using one of the provided USB-C cables and a USB power adapter (not included).
- Turn on the transmitter. The 'OPT' indicator on the transmitter should light up.
- On your TV's audio settings, set the audio output to 'Optical' or 'External Speakers' and ensure the digital audio format is set to 'PCM' or 'Stereo'. Avoid 'Dolby Digital' or 'DTS'.
Option B: AUX (3.5mm) Connection (for Analog Audio)
- Connect one end of the 3.5mm AUX audio cable to the AUX OUT or Headphone Jack paTV yako.
- Connect the other end of the AUX audio cable to the AUX input on the Audikast-3 transmitter.
- Connect the transmitter to a power source using one of the provided USB-C cables and a USB power adapter.
- Turn on the transmitter. The 'AUX' indicator on the transmitter should light up.
- On some TVs, you may need to adjust the audio output settings to 'Headphone' or 'External Speakers'.
Option C: Direct Bluetooth Connection (for Smart TVs with Built-in Bluetooth)
For Smart TVs with integrated Bluetooth, the HT41866-Q earbuds can connect directly to the TV without the Audikast-3 transmitter. Refer to your TV's manual for specific Bluetooth pairing instructions.
- Ensure the earbuds are fully charged and powered on.
- Put the earbuds into pairing mode (refer to earbud specific instructions, usually by holding a button until an indicator flashes).
- On your Smart TV, navigate to the Bluetooth settings and search for new devices.
- Select 'Avantree NB16-Q' from the list of available devices to pair.
4.2. Pairing the Earbuds with the Transmitter
The earbuds and transmitter are designed for automatic pairing. If they do not connect automatically, follow these steps:

Image: Diagram illustrating the pairing process between the Avantree Audikast 3 transmitter and two pairs of neckband earbuds, showing arrows from the transmitter's pairing buttons to each earbud.
- Ensure the Audikast-3 transmitter is powered on and connected to your TV.
- Power on both pairs of NB16-Q earbuds.
- Press the '1' pairing button on the transmitter once. The '1' indicator will flash rapidly.
- Place the first pair of earbuds near the transmitter. They should automatically connect. The '1' indicator will turn solid blue.
- Repeat the process for the second pair of earbuds using the '2' pairing button on the transmitter. The '2' indicator will turn solid blue once connected.
- Once both earbuds are connected, you should hear audio from your TV through both pairs.
5. Operating Instructions
5.1. Volume Control
Each pair of NB16-Q earbuds features independent volume controls. Use the volume buttons on the neckband of each earbud to adjust your personal listening level.

Image: Close-up of the Avantree Audikast 3 transmitter showing the volume control buttons (+ and -) and an indication of a +6dB volume boost feature, useful when using optical audio.
The Audikast-3 transmitter also has volume buttons (+/-) which can provide a boosted volume of up to +6dB, useful for offsetting fixed output volumes when using an optical connection.
5.2. Simultaneous Listening
The HT41866-Q system allows two individuals to listen to TV audio simultaneously. Each person can adjust their own earbud volume for a personalized experience.

Image: A man and a woman sitting on a couch, both wearing Avantree neckband earbuds and smiling while watching TV. The Avantree Audikast 3 transmitter is visible on a table in the foreground, indicating shared TV audio.
5.3. Kuchaja maEarbuds
Connect the NB16-Q earbuds to a USB power source using the provided Type C charging cables. A full charge takes approximately 2 hours and provides up to 20 hours of battery life.
6. Kuchengeta
- Chengetedza mudziyo wakaoma. Kunaya kwemvura, hunyoro, uye marudzi ese ezvinwiwa kana mwando anogona kuve nemaminerari anoparadza maseketi emagetsi.
- Usashandise kana kuchengeta mudziyo munzvimbo dzine huruva, dzine tsvina. Zvikamu zvaro zvinofamba uye zvikamu zvemagetsi zvinogona kukuvadzwa.
- Usachengeta chigadziro munzvimbo dzinopisa. Kupisa kwakanyanya kunogona kupfupisa hupenyu hwemidziyo yemagetsi, kukuvadza mabhatiri, uye kuchinjika kana kunyungudutsa mamwe mapurasitiki.
- Usachengeta mudziyo munzvimbo dzinotonhora. Kana mudziyo wadzokera pakudziya kwayo, hunyoro hunogona kuumba mukati memudziyo uye kukuvadza mabhodhi emagetsi edunhu.
- Usaedze kuvhura mudziyo.
- Usadonhedze, kugogodza, kana kuzunza mudziyo. Kubata kwakashata kunogona kutyora mabhodhi edunhu emukati uye mechanics akanaka.
- Usashandise makemikari ane hasha, kuchenesa zvinonyungudutsa, kana mishonga yakasimba kuchenesa mudziyo.
7. Kugadzirisa matambudziko
7.1. No Audio from Earbuds
- Tarisa Makabatana: Ensure the Audikast-3 transmitter is correctly connected to your TV's audio output (Optical or AUX) and powered on.
- Magadzirirwo eOdhiyo yeTV: Verify your TV's audio output is set to the correct source (e.g., 'Optical' or 'Headphone') and the digital audio format is 'PCM' for optical connections.
- Earbud Power & Pairing: Confirm both earbuds are powered on and successfully paired with the transmitter (indicators should be solid blue).
- Mavhoriyamu Levels: Adjust the volume on both the earbuds and the transmitter.
7.2. Audio Delay / Lip-Sync Issues
- The HT41866-Q system uses aptX Adaptive for low latency. Ensure your TV's audio output is not processing the audio in a way that introduces additional delay.
- If using a Smart TV's built-in Bluetooth, ensure the TV supports a low-latency Bluetooth codec.
7.3. Maearbuds Haabatanidzwe
- Ensure both the transmitter and earbuds are in pairing mode (flashing indicators).
- Bring the earbuds closer to the transmitter.
- Try resetting both the transmitter and earbuds (refer to their respective manuals for reset procedures if needed).
8. Zvinotsanangurwa
| Feature | Detail |
|---|---|
| Model Name | HT41866-Q |
| Item Model Number | BTHT-41866-BLK |
| Brand | Avantree |
| Kubatana Technology | Bluetooth |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Mamita |
| Sravana Sameeralu Serial XNUMXth Audio Latency | 50 Milliseconds (aptX Adaptive) |
| Hupenyu hwebhatiri (Earbuds) | 20 Maawa |
| Kuchaja Nguva | 2 Maawa |
| Noise Control | Passive Noise Cancellation |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 10 mamirimita |
| Frequency Range | 20 Hz - 20,000 Hz |
| Impedance | 32 Ohm |
| Inowirirana Devices | TVs with optical (TOSLINK), AUX (3.5mm), or built-in Bluetooth audio outputs |
| Product Dimensions | 8.27 x 5.91 x 1.46 inches |
| Item Weight | 8.8 ounces |
9. Warranty uye Tsigiro
Avantree products typically come with a manufacturer's warranty. For specific warranty details, product registration, or technical support, please visit the official Avantree websaiti kana kubata basa ravo revatengi zvakananga.
You can often find support resources, FAQs, and contact information on the Avantree support page. Please have your product model number (HT41866-Q) and purchase details ready when contacting support.





