This document is an instruction manual for a rechargeable speaker series, providing details on its operation, technical specifications, and safety guidelines.

Function Description:

The device is a rechargeable speaker designed for audio playback and karaoke. It supports various input sources including AUX, Micro SD, USB, and Bluetooth. It also features an FM radio tuner and recording capabilities. The speaker is portable, powered by a built-in DC 7.4V battery or an AC/DC adapter.

Important Technical Specifications:

Power Output: 50 Watts
Frequency Response: 40Hz-22KHz +/-3dB
FM Frequency: 87.5-108MHz
Driver: 6.5" Woofer, 1" Tweeter
Power Source 1 (Battery): DC 9V 2000mAh
Power Source 2 (Adapter): AC/DC Adapter 100-240V 50/60Hz
Bluetooth Pair Name: iR-4000
Wireless Microphone Range: Up to 10 meters

Usage Features:

Remote Control Functions:

The remote control provides comprehensive control over the speaker's functions:

Mute: Silences the audio output.
Mode: Switches between different input modes (e.g., FM, Bluetooth, AUX, USB, Micro SD).
Repeat: Repeats the current track or playlist.
Scan (Play/Pause): Initiates scanning for FM stations or plays/pauses audio playback.
Previous/Next: Navigates to the previous or next track/station.
EQ (Equalizer): Adjusts sound equalization settings.
Volume Turn Down/Up: Controls the master volume.
Number Of Tracks: Likely used for direct track selection.
Play/Record: Initiates playback or recording.
Record: Dedicated button for recording.

Control Panel Functions:

The speaker's control panel offers direct access to key features:

Microphone Volume: Adjusts the volume of the connected microphone.
Mode/BT Pairing: Switches modes and initiates Bluetooth pairing.
Previous/Play/Pause/Next: Controls audio playback and navigation.
Echo: Adjusts the echo effect for the microphone.
AUX Input: Port for connecting external audio devices via an audio cable.
Micro SD Port: Slot for playing audio from a Micro SD card.
USB Port: Slot for playing audio from a USB drive.
DC 9V Input: Power input for charging and AC operation.
Microphone and Guitar Input: Ports for connecting microphones or guitars.
REC/REPLAY: Initiates recording or replays recorded audio.
OFF/ON: Power switch for the unit.
Volume: Master volume control.

Operating Instructions:

Connecting with Sound Source: To play music, connect an audio cable from the sound source device to the AUX input.
Powering On: For AC/DC adapter use, place the POWER button in the ON position. For DC 7.4V battery use, place the POWER switch in the ON position and ensure AC power is disconnected. Adjust volume knobs as needed.
KARAOKE MODE: Plug a microphone into the MIC input port and move the MIC switch to the "on" position. The optimal wireless microphone distance is 10 meters, and a minimum of 3 meters from the device is recommended to avoid feedback.
FM Radio Tuning: Repeatedly press MODE until FM radio mode is selected. Press the play button once to search and program stations. Use the Previous/Next buttons to navigate preset stations.
Bluetooth Connection:
1. Repeatedly press MODE until "Blue blinking" appears on the MP3 player.
2. Enable Bluetooth search mode on your phone or device.
3. Select "iR-4000" from the list of available devices to pair. "Blue" will be displayed steadily upon successful connection.
4. Press Play/Pause to start playback. Use Previous/Next to navigate audio files.

Maintenance Features:

Battery Guidelines:

Initial Charge: Charge the device for 4-6 hours before first use.
Low Battery Indication: A blinking green indicator light signifies low battery. The unit should be charged immediately. A steady green light indicates a full charge.
Battery Longevity: It is recommended to charge the device within 24 hours of a low battery indication to prolong battery life and prevent longer charging times.

Safety Guidelines:

Electric Shock Risk: Do not open or dismantle the speaker. Refer all maintenance to qualified authorized repair personnel. Opening the device voids the warranty and poses a risk of electric shock.
Power Supply: Only use the provided AC/DC adapter or the built-in DC 9V battery. Using other power supplies can damage the speaker and void the warranty.
Environmental Exposure: Do not expose the equipment to rain, moisture, strong sunlight, or high temperatures.
Object Placement: Do not place objects (especially liquid-containing ones) on the equipment to prevent damage.
External Amplifier: Do not connect the equipment to an exterior amplifier to prevent damage to the sound system.
Volume Level: Play the equipment at an adequate sound volume level to avoid hearing damage or equipment damage.
Overheating: Use the equipment in a well-ventilated environment to prevent overheating.
Power Cable Protection: Ensure the power cable is not stepped on or pressed by heavy objects, and do not drag it forcefully.
Extended Non-Use: Remove the power cable from the outlet and power off the unit when not in use for extended periods.

Troubleshooting:

No Sound:
- Check power plug insertion and power switch position.
- Verify audio cable connection.
- Ensure speaker volume is at an adequate level.
- If in battery mode, try plugging into a wall outlet to confirm the battery is charged.
Karaoke with Sharp Noise:
- Adjust the distance between the device and the wireless microphone.
- If using two wireless microphones simultaneously, increase the distance between them.

Equipment Noise:

The unit has a distortion prevention feature. If unwanted noise occurs, remove and reinsert connected audio cables one at a time. Maintain a distance of 2-3 feet from each cable.

Antimagnetic:

Keep the speaker at a safe distance (2-3 feet) from other magnetic devices like CRT monitors, TVs, and mobile phones to prevent unwanted distortion.

In the Box:

1 Power Adapter
1 User Manual
1 Remote Control

iROCKER IR-4000 - 页 2

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