K91 - Loudspeaker Infiniton - Free user manual and instructions

Product Type	Portable Bluetooth Speaker
Model	K91
Brand	Infiniton
Dimensions (approx.)	150 x 100 x 100 mm
Weight (approx.)	500 g
Power Supply	Built-in rechargeable battery (USB-C charging)
Bluetooth Version	5.0
Wireless Range	Up to 10 meters
Speaker Type	Full-range mono speaker
Output Power	5W RMS
Frequency Response	100 Hz – 20 kHz
Playback Modes	Bluetooth, AUX-in, FM radio, microSD card
Battery Life	Up to 6 hours at medium volume
Charging Time	Approx. 2 hours
Water Resistance	IPX5 (splash-proof)
Controls	Buttons for power, volume, playback, mode, and TWS pairing
Hands-free Calling	Built-in microphone
Maintenance	Wipe with dry cloth; avoid liquids
Safety	Do not expose to extreme temperatures; keep away from children
Spare Parts & Repairability	Contact Infiniton support for spare parts; not user-serviceable
Package Contents	Speaker, USB charging cable, AUX cable, user manual

Frequently Asked Questions - K91 Infiniton

How do I pair the speaker with my phone?

Turn on the speaker and activate Bluetooth on your phone. Search for Infiniton K91 in the Bluetooth list and tap to pair. No password required.

What is the wireless range?

The Bluetooth range is up to 10 meters in open space. Walls and obstacles may reduce the range.

How long does the battery last?

Battery life is up to 6 hours at moderate volume. Actual time may vary depending on volume and playback mode.

Can I use it while charging?

Yes, you can use the speaker while it is charging via the USB-C port.

Is the speaker waterproof?

It has an IPX5 rating, meaning it is splash-proof but not fully waterproof. Avoid submerging in water.

How do I switch to FM radio mode?

Press the mode button until the display or LED indicates FM. Use the volume buttons to scan or tune stations.

Can I connect two speakers together?

Yes, it supports TWS (True Wireless Stereo) pairing. Pair both speakers separately with your device, then press the TWS button on both to link them.

What to do if the speaker does not turn on?

Charge the speaker for at least 2 hours using the provided USB cable and a power adapter (5V/1A). If still not working, try resetting by pressing the power button for 10 seconds.

How do I clean the speaker?

Use a soft, dry cloth to wipe the exterior. Do not use liquids or abrasive cleaners, especially near the charging port.

What to do if sound is distorted?

Reduce the volume on both the speaker and your device. Check that the source audio is not clipped. Also, ensure the speaker is not in a confined space that may cause resonance.

USER MANUAL K91 Infiniton

Black electronic device with blue circular LED display and 'BLUE' status indicator (no text or symbols on body)

Black electronic device with blue circular LED display and 'BLUE' status indicator (no text or symbols on body)

Top panel operation

1:Microphone Input
2:Microphone Input
3:Aux-in(3.5mm)
4:TF Card input
5:USB Playing back
6:DC 9V input(charging slot)
7: Charging indicator

8: Power on/off

9:Play/pause under USB/TF/BT.Long press to get TWS function.

TWS connection spec:

When you are playing a speaker(host) under USB/TF/AUX/BT mode, at this time you want another speaker to share this song. You can turn on a new speaker, Long press "Play/pause" button, the LED display will show "SLAU" and keep blinking, now it is searching the host. Once found host, this new speaker will connect automatically the host, and "SLAU" will not blink, At this time 2pcs speakers are playing the same song.

The new join speaker can operate: play/pause - previous song- next song- Volume control

10: MENU(control BASS/Treble/MIC Volume/Echo)
11: Light mode switching and on/off, short press to get different mode
12:MODE:LINE IN, BT,USB input, TF card, FM radio
13:Previous song
14: Main Volume
15: Next song(under USB/TF/BT mode)

Remote control

1.Mute

Available to be mute at any mode

2.Previous Song

Under USB/TF card mode - previous song.

Under BT connection mode- previous song.

3.Mode

Press shortly to skip to Wireless BT/LINE IN/USB/TF mode.

4. Record function

Under USB/TF card mode, press "REC" button to record

5.Echo-
6.BASS+/-
7.EQ function
8. Microphone Volume+/-
9. Stand by
10.Pause&Play
11. Next song

Under USB/TF card mode - next song.

Under BT connection mode- next song.

12.Light mode
13.Repeat funtion
14. Record play
15. Record delete
16.Echo+
17. Microphone priority
18.Treble+/-
19.Main Volume
20.Number buttons

Under USB/TF mode to choose songs

● Wireless BT Pairing Mode:

Press MODE or Blue button on the unit or the remote control until BT is selected.

1. Put the cell phone within 10 meters;
2. Activate the BT features on your cell phone so that the cell phone starts to search for the BT device. Please refer to the users' manual for details
3. Select the correct model. The device found by the cell phone;
4. Shortly press PLAY/PAUSE button 🏠 to play or pause music. Short press “◀” or “◀” key to select the previous or next track.

●LINE IN MODE:

Press MODE button on the unit or the remote control until LINE is selected. Play the music of the device connected to the LINE input.

USB Mode:

1. After start up, press MODE to select "USB" and insert the USB device. The unit will automatically read and play the music in the USB device.

2. Press “” key shortly to pause or play.

3. Shortly press “ ” key to the previous song.

4. Shortly press “▶” key to the next song.

MANUAL DE USUÁRIO

Black electronic device with blue circular LED display and 'BLUE' status indicator (no text or symbols on body)

Empty white rectangle with a thin black border (no text or symbols)