Nady Audio MM-141 - User Manual

Need help?

Do you have a question about the Nady Audio MM-141 and is the answer not in the manual?

Summary

Service and Safety Information

Service Contact Information

Provides contact details for US and international service for Nady Audio products.

Important Service Warning

Warns users against attempting self-service due to danger and warranty voidance.

NADY MM-141 Controls and Features

Controls and Connections Overview

Details the mixer's controls, including volume, power, and input/output connections.

Product Features

Highlights key features like line level inputs, master volume with power switch, low distortion, and power options.

Specifications

Lists technical specifications such as impedance, gain, frequency response, THD, S/N, and dimensions.

The Nady MM-141 is a compact and versatile 4-channel mini mixer designed for professional sound engineers and musicians. It offers a straightforward solution for combining multiple line-level audio sources into a single output, making it ideal for various applications from small home studios to live performance setups.

Function Description:

The primary function of the MM-141 is to mix up to four individual 1/4" unbalanced line-level audio inputs into a single 1/4" unbalanced output. Each input channel features its own dedicated volume control, allowing for precise level adjustment of each source. A master volume control, integrated with the power on/off switch, manages the overall output level. The mixer also includes a power-on LED indicator for quick visual confirmation of its operational status. It can be powered either by a standard 9V alkaline battery, offering portability and convenience for mobile use, or by an optional PAD-1 AC/DC external adapter for continuous operation. When an external DC power source is connected, the built-in battery power is automatically disengaged.

Important Technical Specifications:

Input Impedance: 45kΩ, ensuring compatibility with a wide range of audio sources.
Maximum Input: +5 dBm (1.8V), allowing for robust input signals without distortion.
Output Impedance: 900Ω.
Maximum Output: +6.7dBm (1.7V), providing a strong output signal.
Gain: 20dB, offering significant signal boost for quieter sources.
Frequency Response: 20Hz - 30KHz, covering the full audible spectrum with clarity.
Total Harmonic Distortion (THD): 0.07%, indicating very low signal degradation and high fidelity.
Signal-to-Noise Ratio (S/N): -103dB, ensuring a clean audio signal with minimal background noise.
Noise Floor: 120uV.
Current Drain: 10mA, contributing to efficient power consumption.
9V Battery Life: Up to 60 hours, providing extended use on battery power.
Power Requirements: 9V battery or optional PAD-1 AC/DC adapter.
Dimensions: 5.8" x 4.3" x 2.1" (147 mm x 109 mm x 53 mm), making it exceptionally compact.
Weight: 1.25 lbs (0.57 Kg), lightweight and easy to transport.

Usage Features:

The MM-141 is designed for ease of use and flexibility.

Individual Channel Volume Controls: Each of the four 1/4" unbalanced line-level inputs has its own volume knob, labeled 1 through 4, allowing users to precisely balance the levels of different audio sources. This is crucial for creating a well-mixed sound.
Master Volume Control with Integrated Power Switch: The "MASTER" knob serves a dual purpose: it controls the overall output volume of the mixed signal and also acts as the power on/off switch for the unit. This streamlines operation and reduces the number of controls.
Power LED Indicator: A dedicated LED illuminates when the unit is powered on, providing a clear visual cue of its operational status.
DC Input for External Power: The mixer includes a DC input socket for connecting an optional PAD-1 9V AC/DC adapter. This feature is particularly useful for prolonged studio sessions or fixed installations where battery power might be inconvenient or insufficient. The automatic switch-off of battery power when external DC is connected ensures efficient power management.
Heavy-Duty Construction: The unit boasts a heavy-duty steel construction, ensuring durability and reliability in various environments, from studio desks to gig bags.
High-Quality Components: It features smooth-turn, ultra-stable potentiometers (pots) for precise and consistent control, along with high-quality jacks that ensure secure and reliable connections.

Maintenance Features:

While the manual explicitly states, "DO NOT ATTEMPT TO SERVICE THIS UNIT YOURSELF AS IT CAN BE DANGEROUS AND WILL ALSO VOID THE WARRANTY," it does outline clear procedures for obtaining professional service.

U.S. Service: For customers in the United States, service can be obtained by contacting the Nady Service Department via telephone at (510) 652-2411 or via e-mail at service@nady.com. This centralized contact point simplifies the service process for domestic users.
International Service: International customers are advised to contact the NADY AUDIO distributor in their respective countries, specifically through the dealer from whom the product was purchased. This ensures that service is handled by authorized personnel familiar with local regulations and distribution channels.
Warranty Voidance Warning: The strong warning against self-servicing underscores the importance of professional repair to maintain the unit's integrity and warranty coverage. This policy protects both the user from potential hazards and the manufacturer from damage caused by improper repairs.
Robust Design for Longevity: The heavy-duty steel construction and use of high-quality components (smooth-turn pots, high-quality jacks) are inherent design choices that contribute to the MM-141's longevity and reduce the need for frequent maintenance or repairs under normal operating conditions. This focus on build quality minimizes potential issues that might arise from wear and tear.