Marshall Acton III Pairing Guide: Phone Setup

This guide walks you through the complete setup and pairing process for the Marshall Acton III Bluetooth speaker with your phone. You’ll learn how to power it on, enter pairing mode, connect via Bluetooth, and use the companion app for extra features. We’ll also cover common mistakes, troubleshooting tips, and frequently asked questions to ensure a smooth experience.

What You’ll Need

• Your Marshall Acton III speaker
• The power cable (included) and a power outlet
• A smartphone with Bluetooth enabled (iOS or Android)
• Optional: The Marshall Bluetooth app (recommended for firmware updates and EQ control)

Step-by-Step

1. Power On the Speaker: Connect the included power cable to the back of the Acton III and plug it into a wall outlet. Press the power button (located on the top panel, next to the volume knob) to turn it on. The LED indicator near the power button will light up.
2. Enter Pairing Mode: Press and hold the Bluetooth button (the one with the Bluetooth icon, located on the top panel) for about 2 seconds until the LED indicator starts blinking blue rapidly. This means the speaker is now discoverable.
3. Open Bluetooth Settings on Your Phone: On your phone, go to Settings > Bluetooth (or the equivalent). Make sure Bluetooth is turned on.
4. Select the Speaker: In the list of available devices, look for “Marshall Acton III” (it may appear as “Acton III” or “Marshall Acton III”). Tap on it to initiate pairing.
5. Confirm Pairing (if prompted): Your phone may ask you to confirm a pairing code. If so, ensure it matches the code shown on the speaker (usually 0000 or a random number) and confirm.
6. Wait for Connection: Once paired, the LED on the speaker will stop blinking and remain solid (usually white or blue). You’ll also see a notification on your phone confirming the connection.
7. Play Audio: Play any audio from your phone. It should now come through the Acton III. Adjust volume using your phone or the speaker’s volume knob.
8. Optional: Set Up the Marshall Bluetooth App: Download the Marshall Bluetooth app from the App Store or Google Play. Open the app, and it should automatically detect your speaker. Follow the in-app instructions to connect, update firmware, and adjust EQ settings.

Common Mistakes

• Not holding the Bluetooth button long enough: A quick tap won’t enter pairing mode. You must hold it for about 2 seconds until the LED blinks.
• Speaker already connected to another device: If the speaker was previously paired with another phone or tablet, it may auto-connect to that device instead of your new one. Turn off Bluetooth on the old device or disconnect it first.
• Phone’s Bluetooth cache is stale: Sometimes your phone remembers a previous pairing that’s no longer valid. Forget the device in your Bluetooth settings and try again.
• Ignoring the app: The app can help with firmware updates that fix connectivity issues. Skipping it might leave you with a buggy experience.
• Placing the speaker too far from the phone: Bluetooth range is about 10 meters (30 feet) with clear line of sight. Walls and interference can reduce this.

Tips

• Use the app for EQ control: The Marshall Bluetooth app allows you to adjust bass, treble, and volume for a more personalized sound.
• Keep the speaker’s firmware updated: The app will notify you of firmware updates. These often improve Bluetooth stability and add features.
• Name your speaker: In the app, you can rename the speaker to something like “Living Room” to avoid confusion if you have multiple Marshall devices.
• Use the AUX input for non-Bluetooth devices: The Acton III has a 3.5mm AUX input on the back, great for turntables or wired sources.
• Turn off Bluetooth when not in use: This saves battery on your phone and prevents accidental reconnections.

Troubleshooting

• Speaker not appearing in Bluetooth list: Ensure the speaker is in pairing mode (LED blinking). If not, repeat Step 2. Also, check that your phone’s Bluetooth is discoverable and that you’re within range.
• Pairing fails or drops immediately: Move the speaker closer to your phone, away from other electronic devices (like Wi-Fi routers or microwaves) that may cause interference. Restart both the speaker (power off/on) and your phone’s Bluetooth.
• Audio stutters or cuts out: This is usually a range or interference issue. Move closer, or ensure no other Bluetooth devices are competing for the same frequency. Also, check if the speaker’s battery is low (if using battery-powered mode, though Acton III is mains-powered, so ensure the power cable is securely connected).
• Speaker connects but no sound: Check your phone’s volume and the speaker’s volume knob. Also, ensure the speaker’s input is set to Bluetooth (the LED should indicate it). If you were using AUX, switch back to Bluetooth.
• Can’t connect to the app: Make sure your phone’s Bluetooth is on and the speaker is powered. Close and reopen the app. If it still fails, restart the speaker and try again.
• Factory reset: If all else fails, perform a factory reset. With the speaker on, press and hold the Bluetooth and volume down buttons simultaneously for about 10 seconds until the LED flashes. This clears all pairings. Then repeat the pairing process.

Frequently Asked Questions

Can I pair two phones at the same time?

No, the Acton III supports only one active Bluetooth connection at a time. You can switch between devices by disconnecting one and connecting the other.

How do I reset the speaker to factory settings?

Press and hold the Bluetooth button and the volume down button simultaneously for about 10 seconds until the LED flashes. This will clear all paired devices and reset the speaker.

Does the Acton III support aptX or LDAC?

No, it supports standard SBC and AAC codecs, which are fine for most listeners. For high-resolution audio, use the AUX input with a wired source.

Can I use the speaker while it’s charging?

Yes, the Acton III is mains-powered, so it operates while plugged in. There’s no battery to charge.

Why does my speaker keep disconnecting?

This is often due to interference or distance. Try moving the speaker closer, removing obstacles, and ensuring no other Bluetooth devices are causing interference. Also, update the firmware via the app.

Can I connect via AUX and Bluetooth simultaneously?

No, the speaker will prioritize the last input selected. If you plug in an AUX cable, it will switch to AUX and ignore Bluetooth until the cable is removed.

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