1. Introduction
Thank you for choosing the Lenoxx Sound Wave CA 305 Amplified Speaker. This portable audio system is designed to provide high-quality sound and versatile playback options, including Bluetooth connectivity, USB and Micro SD card inputs, FM radio, and a microphone for karaoke. This manual provides essential information for the safe and efficient operation of your device. Please read it thoroughly before use and retain it for future reference.
2. Safety Instructions
- Do not expose the device to rain or moisture to prevent fire or electric shock.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Only use attachments/accessories specified by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way.
3. Package Contents
Verify that all items listed below are included in your package. If any items are missing or damaged, please contact your retailer.
- Lenoxx Sound Wave CA 305 Amplified Speaker
- Microphone
- Power Adapter
- Remote Control
- Shoulder Strap
- Auxiliary Audio Cable

Figure 3.1: Included accessories for the Lenoxx Sound Wave CA 305. This image displays a wired microphone, a compact remote control, a power adapter, a shoulder strap with metal clips, and an auxiliary audio cable.
4. Product Overview
4.1. Front View

Figure 4.1: Front view of the Lenoxx Sound Wave CA 305 Amplified Speaker. The speaker features a carbon fiber-like finish, a large central speaker with a blue ring and silver grille, and a smaller tweeter to the right. A carrying handle is visible at the top.
4.2. Control Panel

Figure 4.2: Top-down view of the control panel for the Lenoxx Sound Wave CA 305. This panel includes a digital display, various buttons for mode selection and track control, knobs for volume, treble, echo, and microphone volume, and ports for USB, Micro SD (TF), AUX, DC 9V power input, and microphone input. A power switch and charging LED are also visible.
The control panel on the top of the speaker provides access to all functions. Familiarize yourself with the following components:
- Digital Display: Shows current mode, track number, and FM frequency.
- Mode Button: Switches between Bluetooth, USB, Micro SD, FM Radio, and AUX modes.
- Volume Knob: Adjusts the main speaker volume.
- Treble Knob: Adjusts the high-frequency sound output.
- Echo Knob: Adjusts the echo effect for the microphone.
- Mic Volume Knob: Adjusts the microphone input volume.
- USB Port: For USB flash drives.
- TF (Micro SD) Card Slot: For Micro SD memory cards.
- AUX Input (P2): For connecting external audio devices via a 3.5mm cable.
- MIC Input: For connecting the included microphone.
- DC 9V Input: For connecting the power adapter.
- Power Switch: Turns the speaker on or off.
- Charging LED: Indicates charging status.
- Playback Controls: Play/Pause, Previous Track, Next Track, Record.
5. Setup
5.1. Charging the Speaker
- Connect the included power adapter to the DC 9V input port on the speaker.
- Plug the power adapter into a standard electrical outlet (Bivolt compatible).
- The Charging LED will illuminate to indicate that the speaker is charging.
- Allow approximately 4 hours for a full charge. The LED may change color or turn off when fully charged (refer to specific model behavior).
Note: The speaker can be operated while charging.
6. Operating Instructions
6.1. Power On/Off
To turn the speaker on, slide the Power Switch to the "ON" position. To turn it off, slide the switch to the "OFF" position.
6.2. Mode Selection
Press the Mode button repeatedly to cycle through available input sources: Bluetooth, USB, Micro SD, FM Radio, and AUX. The digital display will indicate the current mode.
6.3. Bluetooth Operation
- Turn on the speaker and select Bluetooth mode using the Mode button. The display will show "BLUE" or a similar indicator, and a pairing tone may sound.
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
- Search for available Bluetooth devices. You should find "CA 305" or "Lenoxx CA 305" in the list.
- Select "CA 305" to pair. Once successfully paired, a confirmation tone will sound.
- You can now play audio from your device through the speaker. Use your device's controls or the speaker's playback buttons (Play/Pause, Previous/Next) to manage music.
6.4. USB / Micro SD Playback
- Insert a USB flash drive into the USB port or a Micro SD card into the TF card slot. Ensure the card is inserted correctly.
- The speaker will automatically switch to USB or Micro SD mode and begin playing MP3 audio files. If it does not switch automatically, press the Mode button to select the correct source.
- Use the Play/Pause, Previous Track, and Next Track buttons to control playback.
6.5. FM Radio Operation
- Press the Mode button to select FM Radio mode. The display will show the FM frequency.
- To auto-scan and save available stations, press and hold the Play/Pause button. The speaker will scan and store stations automatically.
- Use the Previous Track and Next Track buttons to navigate through the saved FM stations.
6.6. AUX Input
- Connect one end of the 3.5mm auxiliary audio cable to the AUX input port on the speaker.
- Connect the other end of the cable to the audio output (headphone jack) of your external device.
- Press the Mode button to select AUX mode.
- Control playback and volume from your external device.
6.7. Microphone and Karaoke Function
- Connect the included microphone to the MIC input port on the speaker.
- Adjust the microphone volume using the Mic Volume knob.
- Adjust the echo effect using the Echo knob for a karaoke-like experience.
- Ensure the main volume is set appropriately to avoid feedback.
6.8. Recording Function
The CA 305 features a recording function, allowing you to record your microphone input directly to a connected USB drive or Micro SD card.
- Ensure a USB drive or Micro SD card is inserted into the speaker.
- Connect the microphone to the MIC input.
- Press the Record button (often labeled "REC" or indicated by a microphone icon). The speaker will begin recording audio from the microphone.
- Press the Record button again to stop recording. The recorded file will be saved to the USB drive or Micro SD card.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the speaker. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use for extended periods, store the speaker in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in use.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Battery is discharged; Power adapter not connected; Power switch is off. | Charge the speaker; Ensure power adapter is securely connected; Slide power switch to "ON". |
| No sound. | Volume is too low; Incorrect mode selected; Device not paired (Bluetooth); Cable not connected (AUX). | Increase volume; Press Mode button to select correct source; Re-pair Bluetooth device; Check AUX cable connection. |
| Bluetooth pairing fails. | Speaker not in pairing mode; Device too far; Interference; Incorrect device selected. | Ensure speaker is in Bluetooth mode; Move device closer; Avoid obstacles; Select "CA 305" from device list. |
| USB/Micro SD not playing. | Incorrect file format (only MP3 supported); Drive/card not inserted correctly; Corrupted files. | Ensure files are MP3; Reinsert drive/card; Try a different drive/card or files. |
| Microphone not working. | Microphone not connected; Mic Volume knob too low; Microphone switch off. | Connect microphone securely; Increase Mic Volume; Ensure microphone switch is ON. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Lenoxx |
| Model | CA305 |
| Connectivity | Bluetooth, USB, Micro SD (TF Card), AUX (P2), Microphone Input |
| Audio Playback | MP3 |
| Special Features | Karaoke function, Recording function, FM Radio |
| Power Input | Bivolt (AC 100-240V, DC 9V) |
| Battery Life (Average) | 4 Hours |
| Product Dimensions | 15.5 x 42.5 x 30 cm |
| Product Weight | 3.08 g |
Note: The listed product weight of 3.08 g appears to be a typographical error. Actual weight is likely 3.08 kg or 3080 g.
10. Warranty and Support
For warranty information and technical support, please refer to the warranty card included with your product or visit the official Lenoxx website. Keep your purchase receipt as proof of purchase for any warranty claims.
If you encounter any issues not covered in the troubleshooting section, please contact Lenoxx customer service for assistance.