1. Introduction
The SX91 Professional Digital Mixer is a versatile audio solution designed for live streaming, podcasting, gaming, karaoke, and studio recording. It features a multi-channel design, voice changing capabilities, and a range of sound effects to enhance your audio experience. This manual provides detailed instructions on how to set up, operate, and maintain your SX91 mixer.
2. Package Contents
Please check the box for the following items:
- SX91 Professional Digital Mixer
- User Guide
- USB-C to USB-A Cable (for charging/PC connection)
- USB-C to USB-C Cable (for OTG connection)
- 3.5mm Audio Cable (for external audio sources)
3. Key Features
- Bluetooth Accompaniment: Wireless connection for background music.
- Long Lasting Endurance: Built-in 3000mAh battery for extended use.
- Sound Changing Effect: Multiple voice modulation options.
- Dodge Function: Automatically reduces background music when speaking.
- Noise Reduction Chip: Intelligent noise reduction for clear audio.
- One-Click Cancellation of Original Song: Easily remove vocals from tracks for karaoke.
- Power Display: Visual indicator of battery level.
- Monitoring Ear Return: Real-time audio monitoring through headphones.
- Wide Compatibility: Supports mobile phones, computers, and tablets.
- 12 Types of Electronic Tones: Various electronic audio modes.
- Multi-Platform Live Streaming: Supports simultaneous streaming on two mobile phones.
- 15 Types of Live Streaming Sound Effects: A variety of effects for dynamic broadcasts.
4. Setup Guide
Before first use, please tear off the protective film from the mixer's surface.
4.1 Connecting Microphones
- 48V XLR Microphone: Connect a 48V condenser microphone to the XLR (3-PIN) port labeled "48V XLR microphone" on the left side of the mixer. Ensure the 48V phantom power switch is activated if your microphone requires it.
- Moving Coil Microphone: Connect a moving coil microphone using a 6.35mm TRS or TS cable to the port labeled "Moving coil microphone".
- Standard Microphone: Connect a standard microphone using a 3.5mm TRS cable to the port labeled "Microphone".
4.2 Connecting Headphones/Speakers
- Headphones: Connect your headphones to the 3.5mm TRRS port labeled "Headset" for monitoring, or to the 3.5mm TRS port labeled "Headphones/Speakers" for playback.
- Speakers: Connect external speakers to the 3.5mm TRS port labeled "Headphones/Speakers" for audio output.
4.3 Connecting External Audio Sources (Accompaniment)
Use a 3.5mm audio cable to connect external audio source devices (e.g., another phone, MP3 player) to the "Accompaniment" port for inputting background music or other audio signals.
4.4 Connecting to Mobile Phones/Computers (Live Streaming & Recording)
- Live Streaming (Mobile): Connect your mobile phone to the "Live Streaming" 3.5mm TRRS port using the appropriate cable. The mixer supports simultaneous live streaming on two mobile phones.
- OTG Live Streaming/Charging/PC Live: Use the Type-C interface to connect to your mobile phone or computer for live streaming, recording, and playing accompaniment. This port also allows simultaneous charging of the mixer and the connected phone/sound card.
5. Operating Instructions
Familiarize yourself with the control panel layout:
- Previous song: Navigate to the previous track.
- Switch (Power): Long press to turn the mixer on/off.
- Bluetooth: Activates Bluetooth for wireless accompaniment.
- 48V phantom power supply: Toggles 48V power for condenser microphones.
- Next song: Navigate to the next track.
- High pitch adjustment (Treble): Adjusts high frequencies for bright and penetrating vocals.
- Midrange adjustment (Mediant): Adjusts mid frequencies for clearer sound quality.
- Bass adjustment: Adjusts low frequencies for a fuller, deeper, and powerful voice.
- Monitor volume: Controls the volume of the audio heard through monitoring headphones.
- Instrument volume: Adjusts the volume of connected musical instruments.
- Special effects volume: Controls the intensity of the selected special effects.
- Professional mode: Activates a professional audio processing mode.
- KTV mode: Optimizes settings for karaoke.
- Shouting mode: Enhances voice for shouting effects.
- Original singing mode: Preserves original vocal quality.
- Leading Singing Mode: Specific mode for lead vocals.
- Electronic audio mode: Applies electronic tone effects.
- Mute mode: Mutes all audio output.
- Internal playback mode: For internal audio routing.
- Dodge: Activates intelligent evasion, automatically reducing background music when speaking.
- Noise reduction: Activates one-click noise reduction to eliminate background noise and music soundtrack.
- Special effects buttons: Trigger various warm-up sound effects (e.g., Slap on the face, Applause, Kiss, Laughter, Sadness, Opening, Pit Song, Despise).
- Total microphone volume: Adjusts the overall volume of all connected microphones.
- Reverbation volume: Controls the amount of reverb effect.
- Custom special effects buttons: Four customizable buttons for personal sound effects.
- Recording volume: Adjusts the output volume for recording.
- Accompaniment volume: Controls the volume of the background music from the accompaniment input.
5.1 Basic Operations
- Power On/Off: Long press the power button (2) to turn the device on or off.
- Volume Adjustment: Use the dedicated knobs for Microphone (23), Monitor (9), Instrument (10), Special Effects (11), Reverbation (24), and Accompaniment (27) to adjust their respective volumes.
- Tone Adjustment: Use the High Pitch (6), Midrange (7), and Bass (8) knobs to fine-tune your vocal tone.
- Bluetooth Connection: Press the Bluetooth button (3) to activate. Pair with your device (e.g., smartphone) to stream accompaniment wirelessly.
- Noise Reduction: Press the Noise Reduction button (21) to activate the one-click noise reduction feature. This can eliminate up to 85% of the original sound in accompaniment for karaoke.
- Dodge Function: Press the Dodge button (20) to enable intelligent evasion, which automatically lowers background music when you speak.
- Special Effects: Press any of the warm-up special effect buttons (22) or custom effect buttons (25) to trigger the desired sound.
6. User Tips
- For optimal sound quality with condenser microphones, ensure the 48V phantom power is enabled.
- When using for karaoke, activate the 'Noise Reduction' feature to effectively remove vocals from the original song, allowing you to sing along with the instrumental track.
- The 'Dodge' function is particularly useful for live streaming or podcasting, as it automatically lowers background music when you speak, ensuring your voice is always clear and prominent.
- Experiment with the various 'Special Effects' and 'Electronic Tones' to find the perfect sound for your content. The four 'Custom' buttons can be programmed for your most frequently used effects.
- To connect two phones for simultaneous live streaming, use the dedicated 'Live Streaming' ports.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the surface of the mixer. Do not use liquid cleaners or abrasive materials.
- Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the device frequently. Charge it regularly, even if not in use for extended periods.
- Avoid Disassembly: Do not attempt to disassemble or repair the mixer yourself, as this will void the warranty and may cause damage.
8. Troubleshooting
- No Sound Output:
- Check all cable connections to ensure they are secure.
- Verify that the volume knobs for microphone, accompaniment, and master output are not set to minimum or muted.
- Ensure headphones/speakers are properly connected and their volume is adjusted.
- If using a 48V microphone, confirm the 48V switch is on.
- Bluetooth Connection Issues:
- Ensure the Bluetooth button is activated on the mixer.
- Check that your device's Bluetooth is on and discoverable.
- Move your device closer to the mixer (within 10m, no obstacles).
- Try unpairing and re-pairing the device.
- Poor Sound Quality/Noise:
- Activate the 'Noise Reduction' feature.
- Check for loose cable connections.
- Ensure microphone gain is not set too high, causing distortion.
- Avoid placing the mixer near sources of electromagnetic interference.
- Device Not Charging:
- Ensure the USB-C cable is properly connected to a DC+5V, 1A MAX power source.
- Try a different USB-C cable or power adapter.
9. Specifications
| Feature | Detail |
|---|---|
| Name | SX91 |
| Computer Recognition Name | SX91 |
| Dimension | L225*W145*H42mm |
| Environment Temperature | 0℃ ~ 45℃ / 0℉-113℉ |
| Battery | Lithium ion 3000mAh/3.7V |
| Charging | DC+5V, 1A MAX |
| Power Consumption | 500mAh; 5-6 hours working |
| Dynamic range | 108dB(D/A); 102dB(A/D) |
| Sampling Rate | 48000Hz/16Bit |
| BT Version/Name | V5.0, Compatible with Bluetooth 4.2BR1 SX91 |
| BT Receive Range | < 10 m (No obstacle) |
| S/N Ratio | 108dB(D/A); 102dB(A/D) |
| THD | -92dB(D/A); -90dB(A/D) |
Interfaces Parameter
| Port | Type |
|---|---|
| USB-C port | Type-C USB |
| Live Streaming port | 3.5mm TRRS port |
| Accompaniment port | 3.5mm TRRS & TRS port |
| Headset port | 3.5mm TRRS port |
| Headphones port | 3.5mm TRS port |
| Microphone port | 3.5mm TRS port |
| Moving coil microphone | 6.35mm TRS & TS port |
| Musical instrument port | 6.35mm TRS & TS port |
| 48V Mic port | XLR(3-PIN) port |
10. Warranty and Support
The SX91 Professional Digital Mixer comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact the seller or manufacturer directly.
