Houl Zallee VOCBOOM
Houl Zallee VOCBOOM IPX7 Waterproof Bluetooth Speaker User Manual
Model: VOCBOOM
Brand: Houl Zallee
1. Introduction
Thank you for choosing the Houl Zallee VOCBOOM IPX7 Waterproof Bluetooth Speaker. This manual provides essential information for setting up, operating, and maintaining your speaker. Please read it thoroughly before use to ensure optimal performance and longevity of your device.

Image 1.1: Houl Zallee VOCBOOM IPX7 Waterproof Bluetooth Speaker.
2. Package Contents
Ensure all items are present upon unboxing:
- Houl Zallee VOCBOOM Bluetooth Speaker
- USB Charging Cable
- Auxiliary Audio Cable
- User Manual
3. Product Overview
Familiarize yourself with the speaker's components and controls.
3.1 Controls and Indicators

Image 3.1: Top control panel of the speaker.
- Power Button: Press and hold to power on/off. Short press to check battery status.
- Volume Down / Previous Track: Short press for volume down. Long press for previous track.
- Play/Pause / Call Control: Short press to play/pause music or answer/end calls. Long press to reject calls. Double press for True Wireless Stereo (TWS) pairing.
- Volume Up / Next Track: Short press for volume up. Long press for next track.
- Bluetooth Indicator: Flashes when pairing, solid when connected.
- Battery Indicator: Shows current battery level.
3.2 Ports

Image 3.2: Side ports protected by a waterproof cover.
- USB-A Output Port: For charging external devices (power bank function).
- AUX-in Port: For wired audio connection using the auxiliary cable.
- USB-C Charging Port: For charging the speaker. Ensure the waterproof cover is securely closed when not in use.
4. Setup
4.1 Initial Charging
Before first use, fully charge the speaker. Connect the provided USB charging cable to the USB-C port on the speaker and a compatible USB power adapter (not included). The battery indicator lights will show charging progress. A full charge provides up to 32 hours of playtime, depending on volume and content.

Image 4.1: Speaker demonstrating its power bank function.
4.2 Power On/Off
- To Power On: Press and hold the Power Button for 2-3 seconds until you hear an audible prompt.
- To Power Off: Press and hold the Power Button for 2-3 seconds until you hear an audible prompt.
5. Operating Instructions
5.1 Bluetooth Pairing
The speaker will automatically enter Bluetooth pairing mode when powered on for the first time or if no device is connected. The Bluetooth indicator will flash rapidly.
- Ensure the speaker is powered on and in pairing mode.
- On your mobile device, enable Bluetooth and search for available devices.
- Select "VOCBOOM" from the list.
- Once connected, the Bluetooth indicator will be solid blue, and you will hear a confirmation tone.

Image 5.1: Connecting a device via Bluetooth 5.0.
5.2 True Wireless Stereo (TWS) Pairing
To achieve 80W stereo sound, you can pair two VOCBOOM speakers together.
- Ensure both speakers are powered on and not connected to any Bluetooth device.
- On one speaker (this will be the primary speaker), double-press the Play/Pause button. The speaker will enter TWS pairing mode.
- The primary speaker will search for the secondary speaker. Once connected, you will hear a confirmation tone, and the Bluetooth indicator on both speakers will be solid blue.
- Now, connect your mobile device to the primary speaker via Bluetooth as described in Section 5.1.

Image 5.2: Two speakers paired for True Wireless Stereo experience.
5.3 Music Playback
- Play/Pause: Short press the Play/Pause button.
- Volume Up/Down: Short press the Volume Up (+) or Volume Down (-) buttons.
- Next/Previous Track: Long press the Volume Up (+) button for the next track, or the Volume Down (-) button for the previous track.
5.4 Hands-free Calling
When connected via Bluetooth, the speaker's built-in microphone allows for hands-free calls.
- Answer Call: Short press the Play/Pause button.
- End Call: Short press the Play/Pause button.
- Reject Call: Long press the Play/Pause button.
5.5 AUX-in Mode
Connect an external audio device using the provided 3.5mm auxiliary cable. The speaker will automatically switch to AUX-in mode. Volume control can be managed via the speaker or the connected device.
5.6 USB Playback/Charging
- USB Playback: Insert a USB flash drive with audio files into the USB-A port. The speaker will automatically detect and play the music.
- Charging External Devices: Connect your smartphone or other small device to the USB-A output port using its charging cable. The speaker will act as a power bank.
6. Maintenance
6.1 Cleaning
Wipe the speaker with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure all ports are dry before closing the waterproof cover.
6.2 Waterproofing Care
The speaker is IPX7 rated, meaning it can be submerged in water up to 1 meter (3.3 feet) for 30 minutes. To maintain its waterproof integrity:
- Always ensure the rubber cover for the charging and AUX ports is securely closed before exposing the speaker to water.
- Do not expose the speaker to salt water or chemicals for extended periods. Rinse with fresh water after exposure to salt water.
- Avoid extreme temperatures.

Image 6.1: Speaker demonstrating IPX7 waterproof capability.
6.3 Storage
Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
7. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Speaker does not power on. | Ensure the battery is charged. Connect to a power source and try again. |
| Cannot pair via Bluetooth. | Ensure the speaker is in pairing mode (flashing blue indicator). Turn off and on your device's Bluetooth. Forget "VOCBOOM" in your device's Bluetooth settings and try pairing again. Ensure no other devices are connected to the speaker. |
| No sound or low volume. | Adjust volume on both the speaker and your connected device. Ensure the device is playing music. Check AUX cable connection if in AUX mode. |
| TWS pairing fails. | Ensure both speakers are not connected to any other Bluetooth device. Place speakers close to each other. Double-press the Play/Pause button on one speaker to initiate TWS pairing. |
| Charging external devices is slow or not working. | Ensure the speaker has sufficient battery charge. Use a compatible USB cable for your external device. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | VOCBOOM |
| Brand | Houl Zallee |
| Speaker Type | Portable Bluetooth Speaker (Subwoofer) |
| Connectivity Technology | Bluetooth 5.0 with EDR, Auxiliary, USB |
| Audio Output Mode | Surround Sound (2.1 Channel Configuration) |
| Speaker Maximum Output Power | 40 Watts (60W Peak) |
| Drivers | 2x 15W Full-range, 2x 5W Tweeters, 2x Passive Radiators |
| Playtime | Up to 32 Hours (varies by volume/content) |
| Charging Time | Not specified, but supports USB-C charging |
| Water Resistance Level | IPX7 (submersible up to 1m for 30 min) |
| Built-in Microphone | Yes, for hands-free calls |
| Power Bank Function | Yes, via USB-A output port |
| Material | Acrylonitrile Butadiene Styrene (ABS), Metal |
| Item Weight | 4.66 pounds |
| Package Dimensions | 14.92 x 7.99 x 5.16 inches |
9. Warranty and Support
The Houl Zallee VOCBOOM speaker comes with a limited warranty. For detailed warranty information, please refer to the product packaging or contact Houl Zallee customer support. For technical assistance or further inquiries, please visit the official Houl Zallee website or contact their customer service team.
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