1. Introduction
Thank you for choosing the Greadio Boombox CD and Cassette Player. This versatile audio system combines classic and modern features, allowing you to enjoy music from various sources including CDs, cassette tapes, FM radio, Bluetooth devices, USB drives, and TF cards. With its portable design and long-lasting rechargeable battery, it's perfect for use at home or on the go. This manual provides detailed instructions to help you get the most out of your device.
Image 1.1: The Greadio Boombox CD and Cassette Player, showcasing its main unit, included remote control, and a visual representation of its 5000mAh battery capacity.
2. Safety Information
- Power Source: Use only the specified Type-C charging cable and a compatible 5V 2A adapter (not included) for charging. Do not use damaged cables or adapters.
- Water and Moisture: Do not expose the unit to rain, moisture, or immerse it in water. Keep it away from liquids.
- Heat: Avoid placing the unit near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Ventilation: Ensure proper ventilation. Do not block any ventilation openings.
- Cleaning: Unplug the unit before cleaning. Use a dry, soft cloth. Do not use liquid cleaners or aerosol cleaners.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
- Battery Safety: The unit contains a built-in lithium-ion battery. Do not disassemble, puncture, or expose the battery to extreme temperatures.
3. Setup
3.1 Unpacking
Carefully remove all components from the packaging. Ensure you have the following items:
- Greadio Boombox CD and Cassette Player
- Type-C Charging Cable
- Remote Control
- User Manual (this document)
3.2 Powering the Device
The boombox features a built-in 5000 mAh rechargeable lithium-ion battery for portable use. For initial use or when the battery is low, connect the supplied Type-C charging cable to the unit's Type-C port and the other end to a 5V 2A USB power adapter (not included) or a compatible USB port.
- A full charge takes approximately 2.5 hours.
- Once fully charged, the unit provides approximately 5-8 hours of continuous playback depending on the mode (e.g., Bluetooth: 8 hours, CD/TF/USB: 5 hours, FM: 8 hours).
- The power bar display on the unit indicates the current battery level.
Image 3.1: Visual representation of the 5000mAh battery capacity and charging specifications, including fast charging and playtime.
4. Operating Instructions
4.1 General Controls
The boombox can be operated using the control buttons on the unit or the included remote control. Familiarize yourself with the buttons for power, volume, mode selection, playback controls, and EQ settings.
4.2 CD Player Operation
The CD player supports CD, CD-R, CD-RW, MP3, and WMA formats.
- Open the CD compartment lid.
- Place a CD with the label side facing up.
- Close the CD compartment lid.
- Press the FUNC. button to select CD mode.
- Press the PLAY/PAUSE button to start playback.
- Use the PREV/NEXT buttons to skip tracks.
- Playback Modes: The unit supports Normal Play, Single Cycle, Full Cycle, Random Play, and A-B Repeat. Programming playback is also supported.
Image 4.1: The boombox ensures smooth, skip-free playback and is compatible with various CD formats, including programmable and repeatable options.
4.3 Cassette Player Operation
The boombox features a cassette player and recorder.
- Open the cassette compartment.
- Insert a cassette tape.
- Press the FUNC. button to select Tape mode.
- Use the playback controls (PLAY, STOP, FWD, REW) for tape operation.
- Recording: The unit can record from CD, AUX, USB, Bluetooth, and Radio modes onto a blank cassette tape. Note: Voice recording is not supported in Tape mode.
Image 4.2: The boombox allows users to "Give Your Tapes A New Lease of Life" by playing, recording, and using them for learning, though voice recording is not supported.
4.4 Bluetooth Functionality (Transmitter & Receiver)
The boombox features Bluetooth 5.1 for both transmitting and receiving audio.
4.4.1 Bluetooth Receiver Mode
Connect your mobile phone, tablet, or computer to the boombox to play audio wirelessly.
- Press the FUNC. button to select Bluetooth mode (the display will show "BLUE").
- On your device, enable Bluetooth and search for "Greadio GB-W16".
- Select the boombox to pair. Once connected, you can stream audio to the boombox.
4.4.2 Bluetooth Transmitter Mode
Stream audio from the boombox (CD, Tape, Radio, USB, TF, AUX) to Bluetooth headphones, earbuds, or speakers.
- Ensure your Bluetooth receiving device (headphones, speaker) is in pairing mode.
- On the boombox, select the desired audio source (CD, FM, etc.).
- Press and hold the Bluetooth button on the boombox to enter transmitter pairing mode. The boombox will search for nearby Bluetooth devices.
- Once connected, audio will be transmitted to your Bluetooth device.
Image 4.3: The boombox functions as both a Bluetooth transmitter (sending audio to headphones/speakers) and a Bluetooth receiver (playing audio from phones/tablets).
4.5 FM Radio Operation
The boombox features an FM radio with a 360° retractable antenna for optimal reception.
- Extend the telescopic antenna fully for best reception.
- Press the FUNC. button to select FM Radio mode.
- Use the SCAN button for automatic station search and storage.
- Alternatively, use the PREV/NEXT buttons for manual tuning.
- The FM frequency range is 87.5-108 MHz.
Image 4.4: The enhanced antenna provides wide frequency coverage and strong signal reception for various FM broadcasts.
4.6 USB and TF Card Playback
The unit supports playback from USB flash drives and TF (Micro SD) cards.
- Insert a USB drive into the USB port or a TF card into the TF card slot.
- Press the FUNC. button to select USB or TF mode.
- The unit will automatically begin playing compatible audio files (MP3, WMA).
- Use the playback controls (PLAY/PAUSE, PREV/NEXT) to manage playback.
Image 4.5: The boombox offers multi-mode playback with dedicated ports for AUX, USB, and TF cards, providing massive resource compatibility.
4.7 AUX Input
Connect external audio devices (e.g., MP3 players, smartphones) via the AUX input.
- Connect one end of a 3.5mm audio cable (not included) to the AUX port on the boombox.
- Connect the other end to the headphone jack or audio output of your external device.
- Press the FUNC. button to select AUX mode.
- Control playback from your external device.
4.8 Sleep Timer
The sleep timer allows the unit to automatically turn off after a set period.
- Press the SLEEP button on the remote control.
- Repeatedly press the button to cycle through available sleep times (10-120 minutes).
- The unit will automatically power off after the selected duration.
Image 4.6: Overview of the boombox's 9-in-1 features, including CD player, Bluetooth, 5000mAh battery, cassette player, FM radio, USB/Micro SD card, A-B repeat, AUX, sleep timer, and programmable functions.
5. Maintenance
5.1 Cleaning
- Always unplug the unit from the power source before cleaning.
- Use a soft, dry cloth to wipe the exterior surfaces.
- For stubborn stains, lightly dampen the cloth with water and a mild detergent, then wipe dry immediately.
- Do not use abrasive cleaners, waxes, or solvents as they may damage the finish.
- For the CD lens, use a specialized CD lens cleaner.
- For the cassette head, use a cotton swab lightly dampened with isopropyl alcohol.
5.2 Storage
When not in use for extended periods, store the boombox in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for a long time, it is recommended to fully charge the battery every 3-6 months to maintain its lifespan.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Battery is depleted. Power cable not connected properly. | Charge the unit using the Type-C cable. Ensure the Type-C cable is securely connected to both the unit and the power source. |
| No sound from speakers. | Volume is too low. Incorrect mode selected. External device not connected properly (AUX). | Increase the volume. Press the FUNC. button to select the correct input mode (CD, Tape, FM, BT, USB, TF, AUX). Check AUX cable connection. |
| CD skipping or not playing. | CD is dirty or scratched. CD inserted incorrectly. | Clean the CD with a soft, lint-free cloth. Try another CD. Ensure the CD is placed correctly with the label side facing up. |
| Cassette tape not playing/recording. | Tape is tangled or damaged. Incorrect mode for recording. | Check the tape condition. Ensure you are in the correct source mode (CD, AUX, USB, Bluetooth, Radio) for recording to tape. Voice recording is not supported. |
| Poor FM radio reception. | Antenna not extended. Weak signal area. | Fully extend and adjust the telescopic antenna. Try repositioning the unit or the antenna. |
| Bluetooth pairing issues. | Device too far. Bluetooth not enabled on source/receiving device. Boombox not in pairing mode. | Move devices closer. Ensure Bluetooth is active on both devices. For receiver mode, select "BLUE" mode. For transmitter mode, press and hold the Bluetooth button. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Greadio |
| Model Number | GB-W16 |
| Color | Black |
| Connectivity Technology | Auxiliary, Bluetooth, USB |
| Compatible Devices | Bluetooth speakers, Personal computer, Tablet, Mobile phone, Headphones/earbuds |
| Battery Composition | Lithium-ion |
| Rechargeable Battery | Yes (5000 mAh) |
| Item Dimensions (L x W x H) | 19.2 x 19.2 x 13.1 cm (approx. 7.56 x 7.56 x 5.16 inches) |
| Item Weight | 2.99 pounds (approx. 1.36 kg) |
| Power Source | 5000 mAh rechargeable battery |
| Speaker Type | Stereo |
| Power Output | 3 Watts |
| FM Frequency Range | 87.5-108 MHz |
| CD Compatibility | CD, CD-R, CD-RW, MP3, WMA |
| Bluetooth Version | 5.1 |
Image 7.1: The boombox features dual 5W stereo sound with a shockproof design, offering a wider soundstage and reduced noise, along with various EQ settings.
8. Warranty and Support
Greadio provides the following warranty and support for your boombox:
- 15-Day Refund Policy: If you are not satisfied with your purchase, you may be eligible for a refund within 15 days.
- 12-Month Warranty: The product is covered by a 12-month warranty from the date of purchase, covering manufacturing defects.
- Lifetime Service: Greadio is committed to providing lifetime technical support and customer service for this product.
- For any problems or questions, please contact Greadio customer support. Contact information can typically be found on the product packaging or the official Greadio website.
