How to Connect Bluetooth Speaker to Projector

Why Connect a Bluetooth Speaker to Your Projector?

Most projectors — even expensive ones — have weak built-in speakers. A 5W mono speaker simply cannot deliver the audio experience that matches a 100-inch picture. Connecting a Bluetooth speaker gives you rich, room-filling sound without running extra cables. Here is exactly how to do it.

Method 1: Pair via Projector’s Built-in Bluetooth

Many modern smart projectors (XGIMI, Dangbei, BenQ, Hisense Laser TV, ViewSonic M series) have Bluetooth audio output built in. Follow these steps:

  1. Turn on your Bluetooth speaker and put it in pairing mode (usually by holding the Bluetooth button until the LED flashes rapidly).
  2. On the projector, go to Settings → Bluetooth (or Audio → Bluetooth Output).
  3. Enable Bluetooth and wait for the device list to populate.
  4. Select your speaker from the list and confirm pairing.
  5. Audio will now route to the external speaker. You may need to set the speaker as the default audio output in Settings → Sound → Audio Output.

Note: Not all projectors with Bluetooth for input (remote, keyboard) also support Bluetooth audio output. Check your projector’s spec sheet for “Bluetooth audio output” specifically.

Method 2: 3.5mm Audio Jack (Universal Option)

If your projector has a 3.5mm audio output jack (most do), and your speaker has a 3.5mm input:

  1. Connect a 3.5mm stereo cable from the projector’s audio out to the speaker’s aux in.
  2. Set the projector’s audio output to Line Out in the audio settings.
  3. Adjust volume from the speaker directly.

If your Bluetooth speaker doesn’t have a 3.5mm aux input, use a Bluetooth audio transmitter — plug it into the projector’s 3.5mm output and it wirelessly sends audio to your Bluetooth speaker. These are inexpensive and widely available online.

Method 3: HDMI ARC

If you have a soundbar or Bluetooth speaker with HDMI ARC support:

  1. Connect the soundbar to your projector’s HDMI ARC port using an HDMI cable.
  2. Enable ARC in both the projector and soundbar settings.
  3. Audio will be sent back through the HDMI cable to the soundbar.

This method offers the best audio quality and syncs volume control. It works well with smart projectors that have an HDMI ARC port (common on Hisense Laser TVs and higher-end models).

Method 4: Optical Audio (TOSLINK)

Some projectors have an optical audio output. If your speaker or soundbar has an optical input, use a TOSLINK cable. This provides clean digital audio without compression. Add a Bluetooth transmitter to the optical port if needed for wireless transmission.

Which Projectors Support Bluetooth Audio Output?

  • Yes — Bluetooth audio out: XGIMI Horizon, Dangbei Mars Pro, BenQ TK700, Hisense Laser TV, ViewSonic M2e
  • No — Bluetooth input only (for remotes): Many standard DLP projectors, Epson home theatre models
  • Check the manual for the exact phrase “Bluetooth audio output” or “Bluetooth speaker pairing”

Common Issues and Fixes

  • Speaker pairs but no audio: Check Settings → Audio Output and switch from built-in speakers to Bluetooth.
  • Audio lag/sync issues: Enable aptX Low Latency on the transmitter and speaker if supported. Alternatively, use the 3.5mm method for zero delay.
  • Speaker keeps disconnecting: Move the speaker within 5 metres of the projector; walls and interference can affect Bluetooth range.
  • Only one channel of audio: Ensure you’re using a stereo 3.5mm cable and the projector output is set to stereo, not mono.

Also See

Browse Bluetooth Speakers for Home Theatre on Amazon India ↗

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