1. Introduction
The Rolls MX42 Stereo Mini Mixer is a compact and versatile audio mixing device designed for integrating multiple stereo RCA audio sources into a single output. Its passive circuitry allows for operation without external power, making it ideal for various audio setups where simplicity and reliability are key. This manual provides essential information for the safe and effective use of your MX42 mixer.
2. Safety Information
- Read all instructions carefully before operating the device.
- Do not expose the unit to rain, moisture, or extreme temperatures.
- Avoid placing the unit near heat sources or in direct sunlight.
- Do not attempt to service the unit yourself. Refer all servicing to qualified personnel.
- Ensure all connections are secure before use to prevent signal loss or damage.
3. Package Contents
Verify that all items are present in the package:
- Rolls MX42 Stereo Mini Mixer Unit
- User Manual (this document)
4. Product Overview
The Rolls MX42 features a durable metal chassis with four stereo RCA inputs and one stereo RCA output. Each input channel has an independent level control knob for precise mixing.
Front Panel
Image Description: A front view of the Rolls MX42 Stereo Mini Mixer. The unit is black with four rotary knobs on the top surface. These knobs control the individual levels of each input channel. The compact design is evident, highlighting its portability and ease of integration into various setups.
Rear Panel (Connections)
Image Description: A rear view of the Rolls MX42 Stereo Mini Mixer, showcasing its RCA input and output ports. There are four pairs of stereo RCA input jacks (red for right, white for left) labeled IN1, IN2, IN3, IN4. On the far right, there is a single pair of stereo RCA output jacks labeled OUT. Above the inputs, four black rotary knobs are visible, corresponding to each input channel's level control.
5. Setup
The Rolls MX42 is a passive mixer, meaning it does not require external power for operation. However, due to its passive nature, there may be a slight signal level reduction. Ensure your audio sources have sufficient output level and your amplifier/speakers can compensate for any potential volume loss.
Connecting Audio Sources
- Identify your audio sources (e.g., CD player, instrument, portable recording device, video playback device).
- Using standard stereo RCA cables, connect the left and right outputs of your audio sources to the corresponding IN1, IN2, IN3, or IN4 stereo RCA input jacks on the MX42. Match the red cable to the red jack (right channel) and the white cable to the white jack (left channel).
- Connect the stereo RCA output jacks (OUT) of the MX42 to the stereo RCA inputs of your amplifier, powered speakers, or recording device.
- Ensure all connections are firm and correctly seated.
Video Demonstration: RCA Stereo Audio Mixer Setup
Video Description: This video demonstrates the setup and product showcase of a PROZOR RCA Stereo Audio Mixer, which operates similarly to the Rolls MX42. It illustrates how to connect multiple RCA audio sources to the mixer and then connect the mixer's output to an amplifier or speakers, providing a visual guide for basic connections.
6. Operating Instructions
Once your audio sources and output device are connected, you can begin mixing your audio signals.
- Start with all level control knobs on the MX42 set to their minimum (fully counter-clockwise) position.
- Turn on your amplifier or powered speakers and set their volume to a low, safe listening level.
- Begin playing audio from your first source. Slowly turn the corresponding level control knob on the MX42 clockwise until you achieve the desired volume.
- Repeat step 3 for each additional audio source you wish to mix. Adjust the individual level knobs to balance the volumes of all active sources.
- If you experience a significant drop in overall volume, increase the volume on your amplifier or powered speakers. Remember that passive mixers inherently reduce signal strength.
Video Demonstration: 4 Channel Stereo Audio Mixer Operation
Video Description: This video demonstrates the operation of a LiNKFOR 4 Channel Stereo Audio Mixer, which functions similarly to the Rolls MX42. It shows how to connect multiple devices and adjust individual channel volumes to achieve a balanced mix, highlighting the ease of use for combining various audio inputs.
7. Maintenance
- Keep the unit clean by wiping it with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Regularly check all cable connections for tightness and wear.
- Store the mixer in a cool, dry place away from dust and extreme temperatures when not in use.
8. Troubleshooting
No Audio Output
- Check all RCA cable connections to ensure they are securely plugged into the correct input and output jacks.
- Verify that your audio sources are playing and their output levels are sufficient.
- Ensure the volume on your amplifier or powered speakers is turned up.
- Confirm that the individual level control knobs on the MX42 for the active channels are turned up.
Low Volume
- As a passive mixer, the MX42 will inherently reduce the signal level. Increase the volume on your amplifier or powered speakers to compensate.
- Ensure the output level of your audio sources is maximized before feeding into the MX42.
Noise or Hum
- Ensure all audio cables are of good quality and properly shielded.
- Try isolating the mixer from other electronic devices that might cause interference.
- Check for ground loops in your audio setup.
Video Demonstration: Noise Solution for Mixers
Video Description: This video provides solutions for reducing noise in mixers, which can be helpful for troubleshooting static or hum issues with the Rolls MX42. It covers common causes of noise and recommended practices to ensure clean audio output.
9. Specifications
| Item Weight | 9.6 ounces |
| Product Dimensions | 5 x 5 x 5 inches |
| Item Model Number | MX42ROLLS |
| Mixer Channel Quantity | 4 |
| Number of Channels | 4 |
| Connectivity Technology | Auxiliary (RCA) |
| Power Source | Passive (No external power required) |
10. Warranty and Support
For warranty information and technical support, please refer to the manufacturer's official website or contact their customer service directly. Keep your purchase receipt for any warranty claims.
