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Midas 502 - User Manual

Midas 502
15 pages
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500 SERIES MICROPHONE PREAMPLIFIER 502
500 Series Modular MIDAS Microphone Preampli er
with Classic XL4 Filters
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Midas 502 Specifications

General IconGeneral
BrandMidas
Model502
CategoryAmplifier
LanguageEnglish

Summary

Important Safety Instructions

General Safety Precautions

General precautions for preventing fire, electric shock, ensuring ventilation, and proper grounding.

Usage and Handling Guidelines

Guidelines for cord protection, accessory use, moving equipment, servicing, and environmental considerations.

Electrical Shock Hazard Warnings

Warnings about uninsulated voltage and prohibition of opening the unit to prevent electric shock.

Controls Overview

Mounting Holes

Secures the 502 module into the 500 series rack chassis using screws.

Rotary Input Level Meter

Precision 11-segment meter showing post-preamp, pre-filter signal for gain setting.

Input Gain Control

12-position rotary switch for mic/line gain from 0 to +60 dB, handling high input levels.

48 V Phantom Power Switch

Activates +48V phantom power for microphones; LED indicates status.

Low Pass Filter Control

Adjusts low-pass filter frequency from 1 kHz to 40 kHz to remove HF noise or add vintage sound.

Low Pass Filter IN Switch

Inserts the low-pass filter into the signal path; yellow LED indicates activation.

Phase Reverse Switch

Reverses signal phase by 180 degrees; green LED indicates status.

High Pass Filter Control

Adjusts high-pass filter frequency from 10 Hz to 400 Hz to remove unwanted low frequencies.

High Pass Filter IN Switch

Inserts the high-pass filter into the signal path; yellow LED indicates activation.

TX Switch

Switches between standard balanced output and transformer-balanced output for vintage sound.

Rotary Output Level Meter

Precision 11-segment meter showing output signal level for trim control setting.

Output Trim Control

Provides +/- 20 dB output level control for precise gain staging and coloration.

Getting Started

Module Installation

Mounts the 502 module into a 500 series rack chassis and secures it with screws.

Blank Plates Usage

Fills empty slots in the rack chassis to prevent dust and objects from entering.

System Module Insertion

Inserts other modules into the system after the 502 module is installed.

Connecting Audio Equipment

Connects microphones and other audio gear to the rack chassis inputs and outputs.

Phantom Power Activation

Provides +48V phantom power to microphones, with caution advised for compatible devices.

Powering On the System

Turns on the rack unit, featuring a 2-second delay to prevent power-on thumps.

Specifications

Control Specifications

Details of phantom power, gain control, filters, and output type settings.

Input and Output Specifications

Specifies input/output impedance, signal type, and CMRR.

System Noise and Frequency Response

Lists noise levels at unity gain and frequency response for electronic/transformer outputs.

Distortion and Filters

Provides distortion figures and low/high pass filter characteristics.

Meter and Power Requirements

Describes meter types and power consumption/voltage requirements.

Physical Dimensions and Weight

Outlines the physical size and weight of the module.

Module Connector Pin-Outs

Other Important Information

Online Registration

Encourages registering the product online for faster repair claims and warranty information.

Handling Malfunctions

Provides guidance on contacting support or using online resources for troubleshooting.

Power Connection Guidelines

Advises on using the correct mains voltage and replacing fuses with identical types.

Compliance and Warnings

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