Introduction
Thank you for purchasing the G Keni Portable Cassette Player Boombox. This device allows you to enjoy your favorite cassette tapes, listen to AM/FM radio, and even record audio. Its portable design and versatile power options make it ideal for both home and on-the-go use. Please read this manual carefully to ensure proper operation and maintenance of your device.

Figure 1: G Keni Portable Cassette Player Boombox, front view.
What's in the Box
- AC Cord x1
- Cassette Player x1
- Operating Manual x1
Setup
Powering the Device
Your G Keni Boombox can be powered in two ways:
- AC Power: For indoor use, connect the included AC power cord to the "AC-IN" jack on the back of the unit and plug the other end into a standard wall outlet.
- Battery Power: For portable use, open the battery compartment on the back of the unit. Insert 4 x C cell batteries (not included), ensuring correct polarity (+/-). Close the battery compartment securely.

Figure 2: The boombox can be powered by an AC cord or 4 C-cell batteries (not included).
Operating Instructions
Cassette Player Operation
- Loading a Tape: Press the "CLOSE" button on the front of the unit to open the cassette compartment. Insert a cassette tape with the open edge facing you, then close the compartment firmly.
- Playback: Press the PLAY button to start playback.
- Pause: Press the PAUSE button to temporarily stop playback. Press again to resume.
- Stop/Eject: Press the STOP/EJECT button to stop playback and eject the tape.
- Fast Forward: Press the F.FWD button to fast forward the tape.
- Rewind: Press the REW button to rewind the tape.

Figure 3: The cassette player allows you to play your old tapes and record new audio.
Cassette Audio Recording
The G Keni Boombox features a built-in microphone for recording audio directly to a cassette tape.
- Insert a blank or recordable cassette tape into the compartment.
- Press the RECORD button (red button) along with the PLAY button simultaneously to begin recording. The built-in microphone will capture external sounds.
- To record from the radio, first tune to your desired station, then press RECORD and PLAY simultaneously.
- Press the STOP/EJECT button to stop recording.
AM/FM Radio Operation
- Select Band: Use the AM/FM switch on the top of the unit to select your desired radio band.
- Tune Station: Rotate the "TUNING" knob on the side of the unit to find your desired radio station. Extend the telescopic antenna for improved FM reception.
- Antenna: For optimal FM reception, fully extend the telescopic antenna. For AM reception, rotate the unit for best signal.

Figure 4: The boombox features strong AM/FM radio reception (FM: 88-108MHz, AM: 530-1710KHz).
Volume Control and Headphone Jack
- Volume: Adjust the "VOL" knob on the side of the unit to increase or decrease the volume.
- Headphone Jack: For private listening, plug 3.5mm headphones (not included) into the headphone jack on the side of the unit. The internal speaker will automatically mute when headphones are connected.

Figure 5: Enjoy personal listening time with the 3.5mm earphone jack.
Video 1: An overview of the G Keni Portable Cassette Player Boombox, demonstrating its features and ease of use.
Maintenance
- Keep the unit away from direct sunlight, heat sources, and excessive dust or moisture.
- Clean the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Regularly clean the cassette player's head and pinch roller using a specialized cassette head cleaner to ensure optimal sound quality and tape longevity.
- If not using the unit for an extended period, remove the batteries to prevent leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | AC cord not connected properly / Batteries drained or incorrectly inserted. | Check AC cord connection. Replace batteries or ensure correct polarity. |
| Poor radio reception | Antenna not extended / Weak signal area / Interference. | Fully extend the telescopic antenna. Try repositioning the unit. Move away from other electronic devices. |
| Cassette tape not playing / distorted sound | Tape incorrectly inserted / Dirty tape heads / Worn out tape. | Ensure tape is inserted correctly. Clean tape heads. Try a different tape. |
| Recording not working | RECORD and PLAY not pressed simultaneously / Tape write-protect tab engaged. | Press both buttons together. Check if the tape's write-protect tab is broken off (cover with tape if needed). |
Specifications
- Model Number: KT-3B
- Product Dimensions: 8.94 x 2.99 x 4.92 inches
- Item Weight: 1.9 pounds
- Connectivity Technology: Auxiliary
- Color: Black
- Speaker Type: Stereo
- Power Source: AC Powered or 4 x C cell batteries (not included)
- Radio Frequencies: AM/FM

Figure 6: Key dimensions and control layout of the G Keni Boombox.
Warranty and Support
G Keni offers a 12-month warranty for this product. In addition, a 30-day money-back guarantee is provided. For any inquiries or support, please contact G Keni customer service. We are committed to providing high-quality products and ensuring customer satisfaction.
For further assistance, please visit the G Keni Store on Amazon.





