AirPulse AU-4 Wireless Bluetooth Speaker Instruction Manual

1. Introduction

Thank you for choosing the AirPulse AU-4 Wireless Bluetooth Speaker. This compact and versatile speaker is designed to deliver high-quality audio for various environments, including home offices, living rooms, and professional settings. Please read this manual carefully to ensure proper setup and operation.

Key Features:

• Powerful digital amplifier and advanced DSP technology, delivering 35 watts of power through a 4-inch extended-range driver.
• Compact and durable design with a sturdy MDF cabinet and hand-crafted simulated leather finish.
• Superior sound quality with powerful deep bass, clear mids, and crisp highs.
• Versatile connectivity options including Bluetooth, AUX input, and Line input.
• Compatible with various devices such as smartphones, tablets, CD players, DJ mixers, laptops, and MP3 players.

2. What's in the Box

Upon unpacking your AirPulse AU-4 speaker, please ensure all items listed below are present:

• AirPulse AU-4 Speaker
• Power Cable
• User Manual

Image: AirPulse AU-4 speaker with its power cable and user manual.

3. Product Overview

The AirPulse AU-4 features a robust and aesthetically pleasing design, reminiscent of a vintage amplifier. Its compact size makes it suitable for various placements.

Image: Front view of the AirPulse AU-4 speaker, highlighting its grille and AirPulse logo.

Image: The compact AirPulse AU-4 speaker integrated into a home environment.

Control Panel Layout:

The top panel of the AU-4 speaker houses all the essential controls and input ports. Familiarize yourself with these components for optimal use.

Image: Close-up of the AU-4's top control panel, showing input jacks, toggle switches, and rotary knobs.

• AUX IN: 3.5 mm Stereo Input for connecting smartphones, tablets, and other audio devices.
• LINE IN: 6.35mm (1/4 Inch) Stereo Input for musical instruments like acoustic guitars, electric basses, and keyboards.
• RESET / PLAY/PAUSE: In Bluetooth mode, push down to pause or resume music playback. Push up and hold for 3 seconds to reset Bluetooth pairing.
• INPUT MODE SWITCH (AUX / Bluetooth / LINE): Toggle between AUX, Bluetooth, and Line input modes.
• POWER ON/OFF: Toggle switch to turn the speaker on or off.
• BASS Dial: Adjusts the low-frequency output.
• TREBLE Dial: Adjusts the high-frequency output.
• VOLUME Dial: Controls the overall output volume.
• Bluetooth Indicator: Flashing blue light indicates Bluetooth is on and awaiting connection. Steady blue light signifies a successful Bluetooth connection.
• Power Indicator: Illuminates when the speaker is powered on.

4. Setup

4.1 Power Connection

1. Ensure the speaker's power switch is in the OFF position.
2. Connect the provided power cable to the AC input port on the back of the speaker.
3. Plug the other end of the power cable into a suitable AC power outlet.

4.2 Bluetooth Pairing

1. Turn on the speaker using the POWER ON/OFF switch.
2. Set the INPUT MODE SWITCH to the Bluetooth position (middle). The Bluetooth indicator light will flash blue, indicating it's ready for pairing.
3. On your audio device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
4. Select "AU-4" from the list of devices to connect.
5. Once connected, the Bluetooth indicator light will turn solid blue.
6. To pair with a new device, push up and hold the RESET button for 3 seconds until the Bluetooth indicator flashes again.

4.3 AUX / Line-In Connection

1. Turn on the speaker using the POWER ON/OFF switch.
2. For AUX input, connect a 3.5mm stereo cable from your audio device to the AUX IN port on the speaker. Set the INPUT MODE SWITCH to the AUX position (up).
3. For Line input, connect a 6.35mm (1/4 inch) stereo cable from your musical instrument to the LINE IN port on the speaker. Set the INPUT MODE SWITCH to the LINE position (down).

5. Operating Instructions

5.1 Power On/Off

• To turn on the speaker, push the POWER ON/OFF toggle switch upwards. The power indicator light will illuminate.
• To turn off the speaker, push the POWER ON/OFF toggle switch downwards. The power indicator light will turn off.

5.2 Adjusting Audio

• VOLUME: Rotate the VOLUME dial clockwise to increase volume and counter-clockwise to decrease it.
• BASS: Rotate the BASS dial to adjust the level of low frequencies.
• TREBLE: Rotate the TREBLE dial to adjust the level of high frequencies.

6. Specifications

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Avoid using abrasive cleaners or solvents.
• Storage: When not in use for an extended period, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
• Handling: Handle the speaker with care to prevent damage. Avoid dropping or subjecting it to strong impacts.

8. Troubleshooting

If you encounter any issues with your AirPulse AU-4 speaker, please refer to the following common troubleshooting steps:

• No Power: Ensure the power cable is securely connected to both the speaker and a working power outlet. Check if the power switch is in the ON position.
• No Sound: Verify the volume is turned up on both the speaker and your connected audio device. Ensure the correct input mode (Bluetooth, AUX, or Line) is selected. Check all audio cable connections.
• Bluetooth Not Connecting: Make sure the speaker is in Bluetooth pairing mode (flashing blue light). Try resetting the Bluetooth connection on the speaker by holding the RESET button for 3 seconds. Ensure your device's Bluetooth is enabled and "AU-4" is selected.
• Distorted Sound: Lower the volume on both the speaker and your audio device. Check if the audio source is of good quality. Adjust the Bass and Treble dials to see if it improves sound clarity.

9. Warranty and Support

For warranty information and technical support, please refer to the documentation included with your product or visit the official Airpulse website. Keep your purchase receipt as proof of purchase for any warranty claims.