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EN-BTHT-5150-V1.3.2

Avantree

Created on March 27, 2025

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Ensemble

Interactive Setup Guide

Version 1.3.2

Advanced Setup & FAQs

Buttons & Indicators

Initial Setup

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Buttons & Indicators

Ensemble headphones deliver crystal-clear TV sound for an immersive, effortless listening experience.

Headphones:

OFF / ON

Microphone

Play/Pause/Reconnect/ Pair

LED indicator

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Buttons & Indicators

The Ensemble transmitter streams TV audio to its headphones without lip-sync delays and doubles as a charging dock.

Transmitter:

Power Port

Optical Input from TV

AUX Input from TV

OFF / ON

Continue to setup

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⚠️ Important Notice

If you're not satisfied with the sound, try switching to a different mode by pressing and holding both the '+' and 'Play' buttons.

Got it

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⚠️ Important Notice

Failure to set the TV to PCM may cause loud "machine gun" noise.

Got it

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What's in the box?

✔ Ensemble Headphones

✔ Transmitter / Charging Dock

✔ USB Adapter

✔ Optical Audio Cable

✔ Type C Power Cable for Transmitter

✔ AUX 3.5mm Audio Cable

Continue

Buttons & Indicators

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Connect via optical

1️⃣ Plug one end of the cable into TV’s "Optical Digital Audio Out" port. 2️⃣ Plug the other end into transmitter’s "Optical" port.

Connected

I don't have optical

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Plug in the transmitter

⚡Plug the USB-C cable & adapter into a power source near the TV.

Continue

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Select the right audio settings

📺 Using your TV remote, go to: ➡ Settings → Sound → Sound Output. ✅ Select Optical.

Not sure how? Visit our TV Sound Settings Guide

Continue

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Make sure "PCM" is selected

✅ Change "Audio Format" to PCM.

Not sure how? Visit our TV Sound Settings Guide

Continue

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Power on the transmitter and headphones

1️⃣ Power ON:

Slide both power switches to "ON."

2️⃣ Check LEDs:

Transmitter: 🔵 Flashing blue.
Headphones: 🔴🔵 Flashing red & blue.

Continue

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Hold them close & wait for connection

1️⃣ Wait for 5-10 seconds. 2️⃣ Once connected, the LEDs will turn solid blue 🔵.

Connected

Troubleshoot

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Test for sound

🔊 Play a TV show or movie and check for sound through the headphones. ✅ Tip: To stop sound from your TV speakers, go to Settings → Audio and select "TV Speakers Off."

Continue

Troubleshoot

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If there’s no sound...

🔍 Check the cable connections and make sure they are fully plugged in. 🎛️ Make sure the TV’s audio output is set to the correct source (optical, AUX, or RCA). ⚙️ Try changing the TV’s audio format to PCM (for optical connections). 🔄 Restart the TV, transmitter, and headphones.

Continue

Need help

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Keep the transmitter OFF

Ensure the transmitter's power switch is in the "OFF" position.

Continue

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Select the right audio settings

📺 Using your TV remote, go to: ➡ Settings → Sound → Sound Output. ✅ Select Bluetooth Speaker List.

Not sure how? Visit our TV Bluetooth Settings Guide

Continue

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Pair your headphones

1️⃣ Power ON:

Slide the power switch to "ON."
LED will flash 🔴🔵 (pairing mode).

2️⃣ If LED Is Not Flashing:

Press & hold <button> until the LED flashes 🔴🔵.

Continue

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Select "Avantree AS50"

🔍 Select your headphones from the TV’s Bluetooth list. 🔗 Wait for "Connected" message.

Connected

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Test for sound

🔊 Play a TV show or movie and check for sound through the headphones. ✅ Tip: To stop sound from your TV speakers, go to Settings → Audio and select "TV Speakers Off."

Continue

Troubleshoot

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For next use

After turning on the headphones, simply press the button once. They will reconnect to the last used device — no need to pair again each time.

Got it

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If there’s no sound

Continue

Need help

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Connect via AUX

1️⃣ Plug one end of the AUX cable into the TV’s 🎧 headphone jack. 2️⃣ Plug the other end into the transmitter’s "AUX" port.

Connected

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Plug in the transmitter

⚡Plug the USB-C cable & adapter into a power source near the TV.

Continue

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Select the right audio settings

📺 Using your TV remote, go to: ➡ Settings → Sound → Sound Output. ✅ Select Headphones.

Continue

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Power on the transmitter and headphones

1️⃣ Power ON:

Slide both power switches to "ON."

2️⃣ Check LEDs:

Transmitter: 🔵 Flashing blue.
Headphones: 🔴🔵 Flashing red & blue.

Continue

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Hold them close & wait for connection

1️⃣ Wait for 5-10 seconds. 2️⃣ Once connected, the LEDs will turn solid blue 🔵.

Connected

Troubleshoot

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Connect via RCA

⚠️ Note

RCA adapter is NOT included.
Use RCA ports labeled "Audio Out."
Contact us for a free RCA to AUX adapter if needed.

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Troubleshooting

If they fail to connect, check which device has stopped blinking.

Headphones stopped blinking first

Both are blinking but never connect

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Turn Bluetooth OFF on nearby devices

Your headphones might have connected to another device. Turn Bluetooth off on nearby devices to re-enter pairing mode.

Bluetooth is off

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Reset the transmitter

1️⃣ Press & hold the middle button for 5 seconds until the LED flashes 🔴🔵. 2️⃣ Double-tap the middle button to reset.

Transmitter is reset

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Reset the headphones

1️⃣ Press & hold + & - for 10 seconds until the LED flashes & turns off. 2️⃣ Headphones will auto re-enter pairing mode 🔄🎧.

Continue

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Lock the headphones to the transmitter

✅ Headphones & transmitter will connect (solid 🔵 LEDs). ✌️ Double-tap the transmitter's middle button to lock for auto-reconnection.

Connected

Need help

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Other connection options

AUX

BLUETOOTH

HDMI ARC

RCA

Not listed

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If your TV only has an HDMI ARC port...

You'll need to either purchase the HAX05 to connect your Ensemble, or exchange your Ensemble for the HDMI ARC-supporting Oasis Plus.

Otherwise, you'll need to connect your Ensemble another way.

Connect another way

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Reach out to us for help!

You can email us directly at support@avantree.com, or click the button below to redirect to our support page. We'll get back to you within 1 business day!

Get support

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You're done!