RHM K-112 Portable Karaoke Speaker User Manual

1. Features

• Ultra-large magnetic circuit high-sensitivity speaker with high penetrating power, low-frequency shock, and perfect medium-/high-frequency representation.
• Latest decoding chips supporting stable playback of MP3 from up to 32GB USB disk/TF card.
• FM radio reception: high-quality digital radio with automatic channel search and storage of up to 60 channels.
• 3.5mm AUX audio input for connection to a wide range of sound sources.
• Built-in high-capacity battery for up to 2 hours of consecutive playback.
• Microphone input with adjustable reverberation, voice, and Karaoke function for outstanding performance.
• Battery with built-in recharging protection for a long and stable service life.
• Built-in low battery and full recharging indication for user convenience.
• Belt/handle design for mobile use.
• Earphone output or external sound source output.
• Microphone input recording function to act as a personal business assistant.
• Bluetooth function.

2. Bluetooth Pairing Operation and Parameters

1. Power On/Mode Selection: Turn the power ON. Press the "MODE" button to enter Bluetooth mode; the display screen will show "BLUE".
2. Pairing: Switch on the Bluetooth function of your mobile phone and search for devices. Select "K-112" from the list and click to connect. Mobile phone connection does not require a password; if a password is needed, please input "0000" to proceed with pairing. After successful pairing, the speaker will emit a voice prompt.
3. Music Playback: Play music directly from your mobile phone; the sound will output beautifully from the speaker.

3. Recording

A storage device (USB/TF card) must be connected for recording.

1. Recording in AUX Mode: Connect a storage device (USB/TF card) and press the "MODE" key to enter AUX mode. Short press the "Record" key to start recording for a duration dependent on the storage capacity. During recording, the input signal should be at a proper strength.
2. Recording in FM Receiving Mode: Connect a storage device (USB/TF card) and press the "MODE" key to enter FM mode. Select your favorite radio station and short press the "Record" key to start recording. Keep the device in a proper location where the radio signal will be received best to ensure optimized recording performance.
3. Recording via External Microphone: Connect a storage device (USB/TF card) and short press the "RECORD" key to start recording. During recording, the "ECHO" knob should be tuned to the minimum. Recording in AUX or FM mode is available.

4. Functional Operations and Features (Device Controls)

Diagram Description: The diagram displays the front panel of the RHM K-112 speaker, featuring an LED screen, various control knobs, ports, and buttons. Key controls are numbered for reference.

1. LED Screen ?️:

Displays operational status and information.

2. Master Volume:

Regulates the overall volume output from the speaker in MP3/FM/AUX mode.

3. TF Port ?:

Reads audio files in MP3 format from a TF card with a capacity up to 32GB (FAT32 format).

4. USB Port ?:

Reads audio files in MP3 format from a USB storage device with a capacity up to 32GB (FAT32 format).

5. Previous Channel/Track ◀️:

In FM receiving status, short press to select the previous channel after a full station search. In USB/TF card reading status, short press to select the previous track.

6. Play/Pause ▶️/⏸️, Sequencing Modes, Mute ?:

• In USB/TF card reading status: Short press to play/pause. Long press to select one of two playback sequencing modes (All - play all tracks in sequence; ONE - repeat one track).
• In FM receiving status: Long press to execute a full search (recommended before using radio function; all found stations will be saved even after power-off).
• In AUX input/FM radio status: Short press to toggle between mute and normal volume.

7. Next Channel/Track ▶️:

In USB/TF card reading status, short press to go to the next track. In FM receiving status, short press to select the next channel after a full station search has been executed.

8. MODE/SHIFT:

Short press to toggle between USB/TF and FM receiving modes. Long press to toggle between recording folder and MP3 folder.

9. Recording/DEL [Record]/[Delete]:

Short press to enable recording (USB/TF storage device needs to be connected first). During recording, the "ECHO" knob should be tuned to the minimum. Long press to delete a recording file. Recording in AUX or FM mode is available.

10. EARPHONE Port ?:

Headphone output port. The "VOLUME" knob adjusts the output volume of the headset.

11. AUX IN ?:

External sound source input port (plug-and-play).

12. MIC IN ?:

Microphone input jack.

13. ECHO Knob [Echo]:

Microphone reverberation regulating knob.

14. BASS Knob [Bass]:

Bass frequency control knob.

15. TREBLE Knob [Treble]:

Treble frequency control knob.

16. Recharging Indicator Light ⚡:

When a recharger is connected, the red light turns on. When the device is fully recharged, the blue light turns on.

17. Power Button [Power]:

Short press to enter standby mode; short press again to resume. If no device is connected, the system displays "-NO-".

5. Operation Instructions on Remote Control

Diagram Description: The diagram shows a compact remote control with numbered buttons for operating the RHM K-112 speaker.

1. Power Button [Power]:

Short press to enter standby mode; short press again to resume. If no device is connected, the system shows "-NO-".

2. Volume Up ⬆️:

Functions as volume up on the master device.

3. Volume Down ⬇️:

Functions as volume down on the master device.

4. Play/Pause ▶️/⏸️:

Functions as Play/Pause on the master device.

5. Mode [Mode]:

Functions as Mode selection on the master device.

6. V+/V- Keys [Volume Up/Down]:

In USB/TF/FM/AUX mode, press them to increase/decrease volume.

7. Numeric Keys 0-9 [Numeric Keys]:

• In USB/TF card reading status: To play Track 12, just input numbers "1" and "2", and within 2 seconds the system will go to Track 12 and start playback. Any input of a number larger than the total available tracks is invalid.
• In FM status: To listen to channel 107.5MHz, just input "1075".

8. Environment Key [Environment]:

In USB/TF card reading status, short press to toggle among Square, Meeting, Home, Hall, and Personal modes (EQ presets).

9. Sequencing Key [Sequencing]:

In USB/TF card reading status, short press to toggle among four playback sequencing modes (All - play all tracks in sequence; RAND - play in random; ONE - repeat one track; FOL - repeat all tracks in a folder).

10. Mute Key ?:

In USB/TF/FM/AUX mode, short press to mute the device.

11. 100+ Key [100+]:

In MP3 mode (USB/TF card), short press to add "100" to the current track number.

6. Karaoke

Connect the microphone ? and enjoy wonderful singing.

CAUTION ⚠️:

The text below the caution symbol is not legible in the provided image crops.