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THX HR624 MK2 User Manual

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O WNER’S MANUAL
HR624 MK2
High Resolution Active Studio Monitor
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THX HR624 MK2 Specifications

General IconGeneral
BrandTHX
ModelHR624 MK2
CategorySpeakers
LanguageEnglish

Summary

IMPORTANT SAFETY INSTRUCTIONS

Hearing Loss Warning

Warns about potential permanent hearing loss from high noise levels and specifies OSHA limits.

INTRODUCTION

Investments in Excellence

Details redesign efforts and improvements made for the MK2 model.

Advantages of HR624 MK2

Explains the benefits of bi-amplified active monitors and specific design features.

Transducers

Describes the woofer, tweeter, and passive radiator used in the monitors.

The Cabinet

Power Amplifiers

QUICK START

Bass Response and Room Setup

Discusses room acoustics, bass response, and the importance of the Acoustic Space switch.

Acoustic Space Switch Function

Explains the role of the Acoustic Space switch in tailoring bass response to room placement.

Additional Tidbits of Wisdom

Placement

THX pm3 Certification

REAR PANEL DESCRIPTION

Signal Inputs

Describes the available input connectors (XLR, TRS, RCA) and their wiring.

Input Sensitivity Control

Explains the function and settings of the input sensitivity adjustment.

Acoustic Space Settings

Details the three-way switch for adjusting low-frequency response based on room placement.

Low Frequency Filter

High Frequency Filter

Power Mode Switch

Mains Input Connector

Passive Radiator Design

FRONT PANEL DESCRIPTION

Front Panel Power Switch

Explains how the front power switch interacts with the rear POWER MODE switch.

Power Ring and Overload Indicator

Describes the function of the power ring and how the overload indicator works.

PROTECTION CIRCUITS

Overload Protection

Explains the overload protection mechanism and how to respond to its indications.

Thermal Protection

Thermal Protection Function

Describes the thermal protection mechanism that activates when heatsinks overheat.

Integrated Magnetic Shielding

Magnetic Shielding Explanation

Explains the magnetic shielding of drivers to prevent interference with displays.

Input Signal Wiring

Signal Wiring Recommendations

Advises on using quality shielded cables and avoiding interference sources.

CARE AND CLEANING

SERVICE INFO

Troubleshooting No Power

Lists steps to diagnose and resolve power-related issues.

Troubleshooting No Sound

Provides steps to identify and fix problems when no audio output is heard.

Troubleshooting Bad Sound

Offers solutions for issues related to distorted or poor sound quality.

Troubleshooting Noise, Hum, or Buzz

Guides users on identifying and eliminating unwanted noise interference.

Sound After Power Off

Explains a specific behavior and how to manage it.

Repair

TECHNICAL INFORMATION

Enclosure Specifications

Details materials, construction, finish, and connector system.

Transducer Specifications

Lists specifications for the low-frequency and high-frequency drivers and passive radiator.

Crossover Specifications

Describes the crossover type and frequency.

Amplifier Section Specifications

Details power ratings, impedance, slew rate, and signal-to-noise for both amplifier sections.

System Specifications

Covers input type, impedance, protection, filters, acoustic space, and driver protection.

Acoustic Specifications

Input Voltage and Power Consumption

Physical Properties

HR624 MK2 Block Diagram

Mackie Limited Warranty