Pure Resonance Audio Classroom Sound System

This Pure Resonance Audio Micro20 Classroom Sound System is your answer for affordable high-quality sound for classroom presentations. This teaching system includes our SD4 SuperDispersion® omni directional speaker and the Micro20™ amplified 2.4G digital pendant wireless microphone system providing freedom of movement. Your students will enjoy the crystal-clear intelligible audio, while you'll appreciate the easy-to-install and easy-to-use functions that this system provides - protecting your voice while improving audience comprehension. This system is perfect for educational environments such as k-12 and university classrooms, lecture halls, study halls and labs, as well as other instructional environments including AV flex rooms, conference rooms, meeting rooms, boardrooms, training rooms and more.

Pure Resonance Audio SD4 SuperDispersion Ceiling Speaker Array

The SD4 Speaker employs (4 smaller 6.5") very fast transient response aluminum-woofer drivers that are very powerful and stable. Working in unison these drivers produce clean powerful dynamic sound. When designing the SD the goal was to have the single most import feature at the forefront, good transient response ("dynamic contrast"). A transient is a sound of short duration, and good transient response can only be achieved if the speaker can deliver its output quickly and cleanly without smearing the original sound, and be completely soundless immediately after. Transients contain the essentials of sound reproduction they provide the sharp pop from a snare drum, the cutting edge of digital sound, the dynamics of the human voice. Larger 2-way cabinet loudspeaker systems offer relatively slow transient response, and the small high-frequency horn tends to beam a narrow, blaring sound at the listener—end result, muddy sound. By replacing larger speakers with four 6 or 8" drivers we increased the driver surface area while creating more punch and a tight, more focused low-end.

Pure Resonance Audio Micro20™ Amplified 2.4G Digital Wireless Microphone System

The Pure Resonance Audio Micro20 wireless voice amplifier system for teachers and instructors includes a hands-free pendant microphone. Looking for high-quality voice amplification and sound clarity? The Micro20 will not disappoint! Our wireless wearable microphone helps protect your vocal chords by eliminating the strain caused by projecting your voice all day long. Lightweight, stylish and comfortable, the Micro20™ system offers maximum versatility and freedom of movement. Designed specifically for use in educational spaces, this hands-free system allows for focused interaction with students. The pendant microphone includes a built-in rechargeable lithium battery with a working time of more than four hours.

The Micro20™ wireless microphone system is unlike any other system on the market. We have developed a uniquely-programmed system that solves traditional wireless microphone transmission problems and minimizes frequency interference. Our patented microphone technology maintains a constant 360° connection to the receiver, eliminating line-of-sight signal loss and interruptions. No matter how much you move around or what direction you’re facing, our 2.4 GHz microphone always stays connected for clear, stable audio.

Please Note: Only one microphone transmitter may be paired at a time.

Pure Resonance Audio SD4 Ceiling Speaker Array:

• SuperDispersion® 360 x 180 Omni Directional Coverage
• Engineered for voice, paging and music applications
• Infinite-baffle in-ceiling speaker drops into standard 2x2 ceiling tile openings
• Powerful – 160 Watts at 8 Ohms, 64 Watts at 70 Volts
• 4 - 6.5" High compliance aluminum woofers with ported bass response and high-frequency dome tweeters
• Uniquely designed fire retardant ABS housing may be painted to match any décor
• Impedance: 8 ohms nominal with built-in 70 Volts (4, 8, 16, 32, 64 Watt taps), easily adjustable by rotating switch
• Metal Backbox that is acoustically engineered and sealed for maximum sonic performance
• Safety cable kit included
  
  

Pure Resonance Audio Micro20 Amplified 2.4G Digital Wireless Microphone System:

• Easy to use high-intelligibility pendant mic for personal comfort
• 2.4GHZ microphones maintain a constant 360° connection to the receiver
• Proprietary-programming solves traditional wireless microphone transmission problems
• Microphone automatically searches available frequencies and then links using a unique ID code with automatic connection lock
• 2.4GHZ transmission minimizes frequency interference and eliminates RF feedback using two-way 2.4G shortwave frequency hopping
• Microphone sync takes less than 5 seconds
• Working distance of approximately 50 feet
• The receiver contains an amplifier providing 20 watts output per channel x 2 channels at 8 ohms
• Includes a built-in rechargeable 3.7V polymer lithium battery with a working time of 4+ hours
• Built-in low-voltage alarm and charging indicator
• Energy saving battery charger shuts down automatically when battery is fully charged

Quick Start Guide

Wiring Instructions

• (1) Pure Resonance Audio SD4 Ceiling Speaker Array
• (1) Pure Resonance Audio Micro20 Wireless System:
• (1) Micro20R 2.4G Wireless Receiver
• (1) Micro20TP Pendant Microphone with Rechargeable Lithium-ion Battery
• (1) Micro20C Microphone Charger
• (1) Micro20PS Power Supply
• (1) Micro20IC 10ft Interface Cable