Welcome to the Rolls ProMix IV MX124 manual; This compact‚ lightweight mixer is designed for mixing four microphones into stereo outputs‚ ideal for live sound‚ broadcasting‚ and installations.
1.1 Overview of the Rolls ProMix IV MX124
The Rolls ProMix IV MX124 is a compact‚ lightweight‚ four-channel stereo microphone mixer designed for professional audio applications. It offers transformer-balanced XLR outputs and front-panel 1/4″ and 1/8″ stereo outputs‚ providing versatility for various setups. Each channel features switchable phantom power and low-cut filters‚ enabling precise control over microphone signals. Weighing just 1.5 lbs‚ the mixer is ideal for live sound‚ broadcasting‚ and installations‚ delivering reliable performance with its durable design and user-friendly interface.
1.2 Importance of the Manual
This manual is essential for optimizing the Rolls ProMix IV MX124’s performance. It provides detailed instructions for setup‚ operation‚ and troubleshooting‚ ensuring users make the most of its features. By understanding gain staging‚ phantom power‚ and output controls‚ users can achieve high-quality audio. The manual also covers maintenance tips‚ extending the mixer’s lifespan. Whether for live sound‚ broadcasting‚ or installations‚ this guide is crucial for unlocking the mixer’s full potential and addressing any challenges effectively.
Key Features and Specifications
The Rolls ProMix IV MX124 features four XLR inputs with phantom power‚ low-cut filters‚ and multiple output options‚ including XLR‚ 1/4‚ and 1/8-inch connectors for versatile connectivity.
2.1 Input and Output Impedance
The Rolls ProMix IV MX124 features an input impedance of 600 Ohms‚ ensuring compatibility with a wide range of microphones. The output impedance is 600 Ohms for XLR connections and 10 Ohms for the 1/4 and 1/8-inch outputs‚ providing flexible connectivity options. This balanced design minimizes noise and interference‚ delivering clean audio signals. The transformer-balanced XLR outputs further enhance isolation‚ while the low output impedance ensures reliable performance across various devices and setups.
2.2 Phantom Power and Low-Cut Filters
The Rolls ProMix IV MX124 offers switchable phantom power for each input‚ providing 18 VDC to accommodate condenser microphones. Additionally‚ each channel features a low-cut filter with a cutoff frequency of 100 Hz‚ helping to reduce unwanted low-frequency noise such as rumble or hum. These features are individually assignable‚ allowing for precise control over each microphone signal. This flexibility ensures high-quality audio processing tailored to specific recording or live sound environments.
2.3 Frequency Response and Signal-to-Noise Ratio
The Rolls ProMix IV MX124 delivers a frequency response of 25 Hz to 16 kHz‚ ensuring clear audio reproduction across the audible spectrum. With a signal-to-noise ratio of 84 dB‚ it provides a clean and quiet signal path‚ minimizing background noise. The mixer also features a total harmonic distortion of 0.02%‚ ensuring low distortion and high fidelity audio output. These specifications make it suitable for professional applications requiring precise and reliable sound processing.
Quick Start Guide
Unpack and inspect the MX124‚ ensuring all components are included. Connect your microphones to the XLR inputs and set the output to your desired destination. Power on the mixer and adjust the gain controls for optimal audio levels. Use the low-cut filters and phantom power switches as needed for each channel. This guide helps you quickly set up and start mixing with the Rolls ProMix IV MX124.
3.1 Unpacking and Inspection
Carefully unpack the Rolls ProMix IV MX124 mixer and verify all components are included. Inspect for any visible damage or defects. The package should contain the mixer‚ a 15V power supply (PS27s)‚ and this owners manual. Ensure the unit is free from scratches or dents. Check the XLR inputs‚ output connectors‚ and control switches for proper function. Handle the mixer with care to avoid damage. If any issues are found‚ contact Rolls support immediately. This step ensures your mixer is ready for safe and optimal operation.
3.2 Setting Up the Mixer
Place the Rolls ProMix IV MX124 on a flat‚ stable surface. Connect the power supply (PS27s) to the DC power jack on the right side. For battery operation‚ insert two 9V alkaline batteries into the compartment. Connect microphones to the XLR inputs and route output signals to your desired destination (XLR‚ 1/4‚ or 1/8 outputs). Ensure all switches‚ including phantom power and low-cut filters‚ are in the desired position. Turn on the mixer and adjust gains as needed for optimal signal levels. This setup process ensures your mixer is ready for reliable performance.
Inputs and Outputs
The Rolls ProMix IV MX124 features four female XLR inputs‚ two male XLR outputs‚ a 1/4 TRS‚ and a 1/8 (3.5mm) stereo output. Impedance is 600 Ohms for XLR and 10 Ohms for 1/4 and 1/8 outputs.
4.1 XLR Inputs and Outputs
The Rolls ProMix IV MX124 is equipped with four female XLR inputs‚ each with an input impedance of 600 Ohms‚ and two male XLR outputs. The XLR outputs are transformer-balanced‚ ensuring high-quality audio transmission with minimal noise interference. These inputs and outputs are designed to handle professional audio signals‚ making them ideal for live sound‚ broadcasting‚ and installation applications. The XLR connections provide reliable and stable audio routing‚ while the transformer-balanced outputs maintain signal integrity over long cable runs.
4.2 Front Panel Outputs (1/4 and 1/8)
The Rolls ProMix IV MX124 features convenient front panel outputs‚ including a 1/4-inch TRS stereo output and a 1/8-inch (3.5mm) stereo output. These outputs provide flexibility for monitoring or connecting to external devices such as headphones‚ mixers‚ or powered speakers. Both outputs are designed to deliver high-quality audio signals with an impedance of 10 Ohms‚ ensuring compatibility with a wide range of audio equipment. These outputs complement the XLR connections‚ offering versatile routing options for various applications.
Phantom Power and Low-Cut Filters
The Rolls ProMix IV MX124 offers individually switchable phantom power (18 VDC) and low-cut filters for each channel‚ reducing noise and hum while accommodating various microphones.
5.1 Switchable Phantom Power
The Rolls ProMix IV MX124 features individually switchable phantom power for each input channel. This allows users to enable or disable 18 VDC phantom power as needed for condenser microphones. The phantom power switches are located on the left side of the mixer‚ making it easy to toggle power without affecting other channels. Properly powering microphones ensures optimal performance and prevents damage to equipment. This flexibility is ideal for mixing applications requiring both dynamic and condenser microphones.
5.2 Low-Cut Filter Activation
The Rolls ProMix IV MX124 features a low-cut filter that can be activated for each input channel. Located on the left side‚ the low-cut switch (marked ‘L’) toggles the filter on or off. When the switch is in the ‘UP’ position‚ the low-cut filter is activated‚ providing a -3 dB cutoff at 100 Hz to reduce low-frequency noise. This feature is useful for minimizing hum‚ rumble‚ or stage vibrations. Proper use of the low-cut filter ensures cleaner audio signals and improved overall sound quality in various mixing applications.
Gain Staging and Output Level Control
Adjust input gain to optimize signal levels‚ ensuring clean audio. Output level controls allow customization of the main output to suit various applications‚ ensuring professional sound quality.
6.1 Adjusting Input Gain
Proper gain staging is crucial for achieving high-quality audio. Begin by connecting your microphones to the XLR inputs. Adjust the input gain controls to optimize signal levels‚ ensuring the LED indicators remain within the optimal range. Aim for a strong‚ clean signal without distortion. Each channel’s gain control allows precise adjustment to match your microphone’s output. This step ensures that your audio is well-balanced and ready for further processing or mixing. Proper input gain setup prevents noise and distortion‚ delivering professional-grade sound quality.
6.2 Setting Output Levels
Adjust the output level controls to ensure the signal is optimized for the connected device. Start with the control at the midpoint and fine-tune based on the input levels‚ using LED indicators to avoid distortion. Ensure the signal is strong and clear‚ matching the output impedance (XLR: 600 Ohms‚ 1/4 and 1/8: 10 Ohms) to the next device. Keep levels within the maximum output of +14 dB to prevent distortion and maintain a clean‚ balanced sound suitable for live sound‚ broadcasting‚ or installations.
Troubleshooting
Identify and resolve common issues like hum‚ distortion‚ or low output by checking connections‚ ensuring phantom power is enabled‚ and adjusting low-cut filters as needed. Regularly clean controls and ensure proper power supply. Refer to the manual or contact support for persistent problems.
7.1 Common Issues and Solutions
Troubleshooting the Rolls ProMix IV MX124 involves addressing issues like noise‚ distortion‚ or low output. Check all connections for stability and ensure proper power supply. If phantom power is enabled‚ verify compatibility with microphones. For hum or buzzing‚ inspect cables and ensure proper grounding. Distortion may result from excessive input levels; adjust gain staging accordingly. Low output could indicate incorrect output settings or inactive channels. Regularly clean controls and consult the manual for detailed solutions. Persistent issues may require professional servicing or contacting Rolls support.
7.2 Maintenance Tips
Regular maintenance ensures optimal performance of the Rolls ProMix IV MX124. Clean the mixer’s surface with a soft‚ dry cloth and avoid harsh chemicals. Check all connections and cables for wear or damage. Store the unit in a dry‚ cool environment away from direct sunlight. Use the provided power supply or recommended batteries to prevent damage. Avoid extreme temperatures and humidity. Refer to the manual for specific care instructions and contact Rolls support for professional servicing if needed.
The Rolls ProMix IV MX124 is a reliable‚ versatile mixer ideal for various applications. This manual provides comprehensive guidance for seamless operation‚ helping you master its features effectively.
8.1 Final Thoughts on the Rolls ProMix IV MX124
The Rolls ProMix IV MX124 is a versatile and reliable mixer‚ offering excellent performance for live sound‚ broadcasting‚ and installations. Its compact design‚ lightweight construction‚ and robust features make it a valuable tool for professionals and newcomers alike. With switchable phantom power‚ low-cut filters‚ and high-quality transformer-balanced outputs‚ it ensures clear and precise audio mixing. The comprehensive manual provides detailed guidance‚ enabling users to maximize its potential. This mixer is a durable and efficient solution for a wide range of audio applications.