Conference Room Sound System with 2 SD5 SuperDispersion Ceiling Speaker Arrays, Bluetooth Mixer Amplifier and 2 Wireless Microphone Systems

Inside the Design

This conference room sound system provides crystal-clear speech intelligibility and superior voice reproduction. Equipped with two Pure Resonance Audio SD5 SuperDispersion® 70V omnidirectional drop tile ceiling speaker arrays, a 240W RMA240BT Bluetooth mixer amplifier, and two high-quality wireless microphone systems, it creates an ideal environment for meetings, boardrooms, training rooms, lecture halls, or any collaborative space. The SD5 speakers deliver 360° coverage in a sleek, thin, and lightweight design, while the RMA240BT provides versatile, high-performance amplification for reliable audio and paging applications.

Sound System Features:

• SD5 speakers provide smooth, even 360° coverage with clear vocal articulation and low distortion
• Proprietary tweeter design with a lower crossover point improves speech clarity
• Versatile, easy-to-install 70V audio system for commercial environments
• Bluetooth-enabled amplifier supports connection from phones, tablets, MP3 players, and computers
• Wireless handheld and lavalier microphones with True Diversity UHF operation minimize dropouts
• Wide 60 MHz UHF tuning bandwidth ensures maximum flexibility in crowded RF environments
• Two-bay charging station keeps wireless microphones powered between meetings

About the System Components

Pure Resonance Audio SD5 SuperDispersion® Ceiling Speaker Arrays

The SD5 SuperDispersion® speakers are omnidirectional 70V ceiling arrays designed for conference rooms, boardrooms, lecture halls, and training centers. They deliver 360° sound coverage for consistent speech intelligibility and background music while minimizing audio dead zones. The compact, lightweight design blends seamlessly into drop ceilings, creating a professional look without sacrificing performance.

Pure Resonance Audio RMA240BT Mixer Amplifier

The RMA240BT 5-channel 240W commercial Bluetooth mixer amplifier delivers high-performance Class D power for distributed 4-16Ω or 70V speaker systems. It supports Bluetooth streaming, TF card and USB playback, and a built-in FM tuner, and comes with an IR remote for easy control. The unit features 2 AUX inputs, 4 MIC inputs, and a priority emergency channel that overrides all other audio for paging or safety announcements. A forced air-cooling fan and front-panel overload indicators ensure reliable operation in demanding commercial environments.

Audio-Technica Wireless Microphone Systems

This system includes an Audio-Technica ATW-3212/C510 True Diversity UHF handheld wireless system and an ATW-3211/831 True Diversity UHF lavalier system. Both provide dependable, interference-resistant wireless performance, making them ideal for meetings, presentations, and lectures. The included ATW-CHG3AD two-bay charging station keeps transmitters fully powered and ready for use at any time.

System & Component Videos

Pure Resonance Audio SD5 SuperDispersion® 70V Omnidirectional Drop Tile Ceiling Speaker Arrays

• Omnidirectional 360° x 180° coverage pattern delivers consistent frequency response across the listening area
• Proprietary tweeter design with lower crossover point enhances vocal clarity and intelligibility
• Wave-guided housing directs sound where it’s needed for optimal coverage
• Ported enclosure with bass-reflex tuning reduces turbulence and improves low-frequency response
• Low-profile metal back-box includes built-in safety suspension points for secure installation
• Thumbwheel-selectable 8Ω and 70V inputs compatible with commercial and stereo amplifiers
• Quick and simple installation—drop the SD5 into any standard drop-ceiling grid
• Safety carabiner kit includes braided steel cables and SpeedClamp™ fasteners for secure mounting

Pure Resonance Audio RMA240BT 5-Channel 240W Commercial Rack Mount Mixer Amplifier with Bluetooth

• High-efficiency, lightweight 1RU chassis engineered for commercial reliability
• Built-in MP3 media player with USB, TF card, Bluetooth, and FM tuner support
• Includes 1 emergency input, 2 AUX inputs, and 4 MIC inputs for versatile system integration
• Bass and treble tone controls for precise audio customization
• Level, overload, and protection indicators provide short-circuit, overload, and overheating protection
• Advanced high-performance amplifier circuitry delivers clean, stable output
• Supports 4-16Ω and 70V speaker systems for flexible deployment
• Provides a powerful 240W output suitable for larger distributed audio applications
• Forced-air cooling system adjusts fan speed based on temperature for long-duration operation
• Includes IR remote control for convenient system management

Audio-Technica ATW-3212/C510 True Diversity UHF Handheld Wireless System

• Extremely wide 60 MHz UHF tuning bandwidth for maximum versatility in crowded RF environments
• Dual-frequency backup switch on handheld and body-pack transmitters for interference avoidance
• True Diversity operation reduces dropouts and improves reliability
• Auto Squelch automatically adjusts to maximize range while minimizing interference
• Frequency scan and IR sync simplify setup and pairing
• Dual-mode receiver display offers standard or performance views for key metering
• OLED screens on transmitters and receivers provide clear readouts of settings and alerts
• Handheld transmitter offers extremely low handling noise and uses interchangeable A-T microphone capsules
• Rugged cH-style connector on body-pack transmitter secures lavalier or headworn microphones
• Body-pack transmitter features tactile mute toggle switch for reliable mute confirmation
• Charging terminals compatible with ATW-CHG3/CHG3N docks for NiMH batteries
• Antenna power supports powered antennas and other in-line RF devices
• Ground-lift switch eliminates hum from ground loops
• Balanced and unbalanced audio output jacks for flexible connectivity

Audio-Technica ATW-3211/831 True Diversity UHF Lavalier Wireless System

• 60 MHz UHF tuning bandwidth with DE2 (470-530 MHz) and EE1 (530-590 MHz) bands
• Backup frequency switch on transmitters and receivers ensures interference-free operation
• True Diversity design reduces dropouts for reliable performance
• Auto Squelch maintains maximum range and minimal interference
• Frequency scan and IR sync allow fast, easy setup
• Dual-mode receiver display for standard or performance monitoring
• OLED screens provide clear settings and alerts
• Body-pack transmitter with cH-style connector secures lavalier or headworn microphones
• Handheld transmitter supports six interchangeable capsules for versatile use
• Mute toggle switch allows tactile confirmation when display is not visible
• Charging compatible with ATW-CHG3/CHG3N docks
• Antenna power available for external RF devices
• Ground-lift switch prevents hum caused by ground loops
• Balanced and unbalanced audio outputs for flexible connectivity

Audio-Technica ATW-CHG3AD Two-Bay Recharging Station for 3000 Series Handheld and Body-Pack Transmitters with AC Adapter

• Two-bay charging station with AD-SA1230XA AC adapter for 3000 Series transmitters
• Charges NiMH batteries while still inside handheld or body-pack transmitters
• Automatically shuts off if alkaline or damaged batteries are detected
• LED indicators display power and charging status
• Up to five charging stations can be linked and powered by a single AC adapter using optional link kits
• Transmitters power off when placed in the charging station and power on when removed

• (2) Pure Resonance Audio SD5 SuperDispersion® 70V Omnidirectional Drop Tile Ceiling Speaker Arrays
• (2) Safety Cable Kits: (8) Steel Safety Cables, (8) Carabiners and (8) Fastlinks
• (1) Pure Resonance Audio RMA240BT 5-Channel 240W Bluetooth Rack Mount Mixer Amplifier
• (1) Audio-Technica ATW-3212/C510 True Diversity UHF Handheld Wireless System
• (1) Audio-Technica ATW-3211/831 True Diversity UHF Lavalier Wireless System
• (1) Audio-Technica ATW-CHG3AD Two-Bay Recharging Station for 3000 Series Handheld and Body-Pack Transmitters with AC Adapter
• (2) Pure Resonance Audio XLRF-6-PREP Female XLR to Prep Patch Cables - 6ft
• (100') West Penn 225 16/2 Non-Plenum Audio Speaker Wire - Gray