Introduction
Thank you for choosing the ALPOWL SDRD-307 Portable Karaoke Machine. This system is designed to provide high-quality audio for various entertainment purposes, including home parties, meetings, weddings, and outdoor activities. Featuring a powerful PA system, wireless microphones, and multiple connectivity options, the SDRD-307 offers a versatile and enjoyable audio experience. Please read this manual carefully to ensure proper setup, operation, and maintenance of your device.
Figure 1: The ALPOWL SDRD-307 Portable Karaoke Machine, showcasing its compact design and included wireless microphones.
Setup
1. Unpacking and Components
Carefully remove all components from the packaging. Ensure all items listed below are present:
- 1 x ALPOWL SDRD-307 Karaoke Speaker System
- 2 x UHF Wireless Microphones
- 1 x USB Charging Cable
- 1 x AUX Cable
- 2 x Sponge Covers for Microphones
- 1 x Performer's Manual (this document)
Figure 2: All components included in the ALPOWL SDRD-307 package.
2. Charging the Device
Before first use, it is recommended to fully charge both the speaker and the wireless microphones. The speaker features a built-in 7.4V/2000mAh Li-ion battery, and each microphone has a 3.7V/1500mAh Li-ion battery.
- Charging the Speaker: Connect the provided USB charging cable to the speaker's charging port and plug the other end into a compatible USB power adapter (not included). The charging indicator will illuminate.
- Charging the Microphones: The speaker acts as a charging station for the microphones. Simply place the wireless microphones into their designated slots on top of the speaker. Ensure they are properly seated for charging to begin.
A full charge provides up to 3.5 hours of continuous music playback at maximum volume. The USB port on the speaker also functions as a power bank, allowing you to recharge your smartphone or tablet.
Figure 3: Charging the speaker and microphones. The speaker's USB port can also charge external devices.
Operating Instructions
1. Power On/Off
To power on the karaoke machine, locate the power button on the unit and press it. To power off, press and hold the power button.
2. Bluetooth Connection
The SDRD-307 features Bluetooth 5.0 for wireless audio streaming with a working range of up to 33 feet (10 meters).
- Turn on your ALPOWL Karaoke Machine and switch it to Bluetooth mode. The unit will indicate it is ready for pairing.
- On your Bluetooth-enabled smart device (smartphone, tablet, laptop), search for Bluetooth devices and select "SDRD" from the list to connect.
- Once connected, you can play music from your device through the karaoke machine.
Figure 4: Simple two-step process for connecting your device via Bluetooth.
3. Other Input Modes
In addition to Bluetooth, the SDRD-307 supports the following input methods:
- AUX Input: Connect external audio devices using the provided AUX cable.
- TF/USB Input: Insert a TF card or USB drive into the respective slots to play audio files directly.
4. Microphone Usage and Controls
The system includes two UHF wireless microphones for dual singing. Each microphone offers real-time monitoring of status, power, volume, mixing, and EQ settings.
- Power Switch: Turn on each microphone using its dedicated power switch.
- Volume Control (VOL+/-): Adjust the microphone's output volume.
- Echo Control (ECH+/-): Add or reduce echo effect to your vocals.
- Equalizer (EQ): Adjust the tonal balance of your voice.
- A=B Function: This function allows for quick pairing or channel switching between microphones.
Figure 5: Detailed view of the wireless microphone controls for voice customization.
Figure 6: Overview of the main unit and microphone controls.
5. Sound Field Effects
The ALPOWL Karaoke Machine offers multiple sound field effects to enhance your audio experience:
- Standard
- Pop Music
- Rock Music
- Classical Music
- Treble Boost
- Bass Boost
Use the 'MODE' button on the main unit to cycle through these effects.
6. Voice Cancel Function
The "voice cancel" function allows you to remove the lead vocals from a song with a single press, making it ideal for karaoke. Refer to the main unit's controls for this specific button.
7. Recording Function
When a USB drive or TF card is inserted, the system can record audio streamed through the microphone. This allows you to capture your performances.
8. Colorful Karaoke Lights
The SDRD-307 features a 7-color karaoke light design to create a vibrant atmosphere. These lights can be activated or changed via controls on the main unit.
Figure 7: The karaoke machine with its dynamic 7-color light effects.
Maintenance
1. Cleaning
To maintain the appearance and functionality of your karaoke machine:
- Wipe the exterior surfaces with a soft, dry cloth.
- Do not use abrasive cleaners, waxes, or solvents as they may damage the finish.
- Keep the speaker grilles free from dust and debris.
2. Storage
When not in use for extended periods, store the device in a cool, dry place away from direct sunlight and extreme temperatures. Ensure the microphones are securely docked or stored to prevent damage.
3. Battery Care
To prolong battery life:
- Avoid fully discharging the batteries frequently.
- Charge the device regularly, even if not in frequent use, to prevent deep discharge.
- Do not expose the device to extreme heat or cold, as this can degrade battery performance.
Troubleshooting
This section addresses common issues you might encounter with your ALPOWL SDRD-307 Karaoke Machine.
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Battery is depleted. | Connect the device to a power source using the USB charging cable and allow it to charge for at least 30 minutes before attempting to power on again. |
| Microphone does not work or turn on. | Microphone battery is depleted or not properly charged. Microphone is not paired. | Ensure the microphone is fully charged by placing it in the speaker's charging slot. Verify the microphone's power switch is in the 'ON' position. If issues persist, try re-pairing the microphone with the main unit (refer to microphone instructions for specific pairing steps if needed). |
| No sound from speaker. | Volume is too low. Incorrect input mode selected. Device not properly connected. | Increase the volume on both the karaoke machine and the connected audio source. Ensure the correct input mode (Bluetooth, AUX, USB/TF) is selected. Verify all cables are securely connected. |
| Bluetooth connection issues. | Device is out of range. Interference. Pairing failed. | Ensure your device is within 33 feet (10 meters) of the karaoke machine. Turn off other Bluetooth devices to reduce interference. Delete "SDRD" from your device's Bluetooth list and attempt to re-pair. |
| Sound distortion or crackling. | Volume too high. Weak battery. Interference. | Reduce the volume. Ensure both the speaker and microphones are fully charged. Move away from other electronic devices that may cause interference. |
Specifications
| Feature | Specification |
|---|---|
| Brand | ALPOWL |
| Model Number | 307 |
| Product Dimensions | 35 x 21 x 15 cm |
| Item Weight | 2.63 kg |
| Speaker Output Power | 2 x 15W |
| Speaker Battery | 7.4V/2000mAh Li-ion |
| Microphone Battery | 3.7V/1500mAh Li-ion |
| Connectivity Technology | Bluetooth 5.0, USB, TF card, 3.5mm AUX |
| Bluetooth Range | Up to 33 ft (10 meters) |
| Compatible Devices | Smartphone, Tablet, Laptop, PC, Speakers, Headphones |
| Special Features | Portable, Voice Cancel Function, Multiple Sound Field Effects, Recording Function, Power Bank Function, Colorful LED Lights |
Warranty and Support
ALPOWL is committed to 100% customer satisfaction. If you encounter any issues or have questions regarding your SDRD-307 Portable Karaoke Machine, please do not hesitate to contact our customer service team.
We offer a 45-day refund or replacement policy for faulty products. Please refer to your purchase documentation for specific contact information or visit the official ALPOWL support page.
