1. Introduction
Thank you for choosing the Lane PMX-402DU 4 Channel Powered Audio Mixer. This manual provides essential information for the safe and efficient operation of your new audio mixer. Please read it thoroughly before use and retain it for future reference.
The PMX-402DU is a versatile 4-channel powered audio mixer designed for various sound reinforcement applications, offering features such as noise cancellation, adjustable voice, multiple sound effects, and a built-in MP3 player.
2. Safety Information
- Always connect the mixer to a grounded power outlet.
- Do not expose the unit to rain, moisture, or extreme temperatures.
- Ensure proper ventilation to prevent overheating.
- Do not open the casing; refer all servicing to qualified personnel.
- Before making any connections, ensure the mixer and all connected devices are powered off.
- Adjust volume levels carefully to avoid hearing damage or speaker damage.
3. Key Features
- 4-Channel Input (MIC/LINE)
- Built-in Digital Multi-Effects (24 Bit/48K Sample)
- Graphic Equalizer
- MP3 Music Player with USB input
- Phantom Power (+48V) for condenser microphones
- Noise Cancelling and Adjustable Voice functions
- High-quality audio output with low distortion
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | PMX-402DU |
| Channels | 4 |
| Input Sensitivity (MIC) | -60dB |
| Input Sensitivity (LINE) | -20dB |
| Input Sensitivity (Eff Ret) | -20dB |
| Input Sensitivity (TapeIn) | -20dB |
| DSP Effects | 24 Bit/48K Sample |
| Output Voltage | 4V Max |
| S/N Ratio | >85dB |
| THD (Total Harmonic Distortion) | 0.03% (1KHz Full Power) |
| Frequency Response | 20Hz-20KHz ±3dB |
| Parametric EQ (Hi) | ±15dB/10KHz |
| Parametric EQ (Mid) | ±15dB/2.5KHz |
| Parametric EQ (Low) | ±15dB/80Hz |
| Output Power | 4Ω/150W+150W |
| Power Consumption | 150W |
| Dimensions (W x H x D) | 28.3cm x 33.5cm x 12.3cm |
| Weight | 5.8 kg |
| Certification | CE |
Dimensions Overview
5. Package Contents
Upon unpacking, please ensure all items are present and in good condition:
- Lane PMX-402DU Powered Audio Mixer
- Power Cable
- User Manual (this document)
If any items are missing or damaged, please contact your retailer immediately.
6. Setup Guide
Before connecting any equipment, ensure the mixer and all audio devices are powered off and their volume controls are set to minimum.
6.1 Power Connection
- Locate the power input on the rear panel (Figure 4).
- Connect the provided power cable to the mixer and then to a suitable 220V-50Hz AC power outlet.
- Ensure the power switch (labeled '开' for ON, '关' for OFF) is in the OFF position before plugging in.
6.2 Input Connections
The PMX-402DU features 4 input channels, each with a combination XLR/TRS jack for microphones and line-level instruments.
- Microphones: Connect dynamic or condenser microphones to the XLR inputs (labeled 'MIC') on channels 1-4. If using condenser microphones, activate the +48V PHANTOM POWER switch (located near the master section) after all microphones are connected.
- Line-Level Devices: Connect instruments (e.g., keyboards, guitars with preamps) or other audio sources (e.g., CD players) to the 1/4" TRS 'LINE IN' jacks on channels 1-4.
- Tape Input: Use the 'TAPE IN' RCA jacks to connect external playback devices.
6.3 Output Connections
- Main Outputs: Connect your main speakers or power amplifier to the 'MAIN OUT' (LEFT/RIGHT) 1/4" TRS jacks.
- Speaker Outputs: For direct speaker connection, use the '喇叭输出' (Speaker Output) jacks on the rear panel (Figure 4). Ensure correct impedance matching (4Ω).
- Record Output: Use the 'REC OUT' RCA jacks to connect to a recording device.
- Headphones: Connect headphones to the 'PHONE' 1/4" jack for monitoring.
6.4 USB/MP3 Player
Insert a USB drive containing MP3 audio files into the 'USB' port in the MP3 MUSIC PLAYER section.
7. Operating Instructions
7.1 Powering On/Off
- Ensure all faders and gain controls are at their minimum settings.
- Flip the power switch on the rear panel to the ON position.
- To power off, reverse the process: lower all volumes, then switch off the mixer.
7.2 Channel Controls (Channels 1-4)
- TRIM (Gain): Adjusts the input sensitivity for each channel. Start low and increase until the PEAK LED flashes occasionally.
- EQ (HIGH, MID, LOW): Three-band equalizer to shape the tone of each channel.
- AUX/EFF: Sends a portion of the channel signal to the internal digital effects processor or external auxiliary send.
- PAN: Adjusts the stereo position (left to right) of the channel signal in the main mix.
- PFL (Pre-Fader Listen): Routes the channel signal to the headphones for monitoring before the channel fader.
- Channel Fader: Controls the volume level of the individual channel in the main mix.
7.3 Master Section Controls
- AUX/EFF SEND: Controls the overall level sent to the effects processor.
- DIGITAL MULTI-EFFECTS: Select and adjust various digital effects (e.g., REPEAT, DELAY) using the UP/DOWN buttons and the display.
- GRAPHIC EQUALIZER: A 5-band graphic equalizer (63Hz, 250Hz, 1KHz, 3.5KHz, 12KHz) to fine-tune the overall sound of the main mix.
- MAIN FADERS (LEFT/RIGHT): Control the overall output volume of the main stereo mix.
- MP3 VOL: Adjusts the playback volume of the built-in MP3 player.
- PHONE VOL: Adjusts the volume for the headphone output.
- +48V PHANTOM POWER: Activates phantom power for condenser microphones.
7.4 MP3 Music Player Operation
Once a USB drive is inserted:
- PLAY/PAUSE: Starts or pauses playback.
- STOP: Stops playback.
- PREVIOUS/NEXT: Navigates between tracks.
- MODE: Switches between different playback modes (e.g., repeat all, repeat one).
- REC: Initiates recording to the USB drive (if supported and configured).
8. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the mixer. Do not use liquid cleaners or solvents.
- Ventilation: Ensure the ventilation grilles are free from dust and obstructions.
- Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Cable Care: Regularly check all cables for damage and replace them if necessary.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Power off; incorrect connections; faders/gain too low; mute engaged; faulty cable. | Check power, all cable connections, increase master/channel faders, ensure no mute is active, test with different cables. |
| Distorted sound | Input gain too high; output level too high; faulty cable/speaker. | Reduce TRIM/gain controls, lower main faders, check speaker impedance, test components individually. |
| Hum or noise | Ground loop; faulty cable; interference from other electronics. | Ensure proper grounding, use balanced cables, try isolating power sources, move away from other electronic devices. |
| MP3 player not working | USB drive not inserted correctly; unsupported file format; MP3 volume too low. | Reinsert USB drive, ensure files are MP3 format, increase MP3 VOL. |
| Phantom power not working | +48V switch off; faulty condenser microphone. | Ensure +48V switch is ON, test with another condenser microphone if available. |
10. User Tips
- Always start with all volume faders and gain controls at their lowest setting before powering on to prevent sudden loud noises.
- When setting gain, gradually increase the TRIM control until the PEAK indicator light on the channel flashes only occasionally. This ensures a strong signal without distortion.
- Experiment with the digital effects to find the best sound for your application. The 'REPEAT' and 'DELAY' functions can add depth to vocals or instruments.
- Utilize the graphic equalizer to tailor the overall sound to your room acoustics or personal preference.
11. Warranty and Support
11.1 Warranty Information
The Lane PMX-402DU comes with a 12-month warranty period from the date of purchase. During this period, if the product exhibits defects due to manufacturing faults, it will be repaired or replaced according to the terms below:
- Customers are responsible for shipping defective products back to the service center, prepaid by express.
- Upon receipt, repairs will be completed within 7 days.
- The repaired or replacement product will be returned to the customer at our cost.
This warranty does not cover damage caused by misuse, accident, unauthorized modification, or improper installation.
11.2 Customer Support
For technical assistance, warranty claims, or any questions regarding your Lane PMX-402DU mixer, please contact our customer support team:
- Email: 2589659452@qq.com
- WhatsApp: +86 15580043427
