Classroom and Conference Room Sound System with SD5 SuperDispersion Ceiling Speaker Array, MA120BT 120W Bluetooth Mixer Amplifier and Dual Wireless Microphone System

Inside the Design

This classroom and conference room sound system provides exceptional 360° audio coverage for small to medium meeting rooms. Equipped with a Pure Resonance Audio SD5 SuperDispersion® drop tile ceiling speaker array, this system delivers even, omnidirectional sound with crisp vocal articulation and low distortion. The MA120BT 7-channel 120W Bluetooth mixer amplifier provides flexible connectivity, clean full-range audio, and reliable operation in a compact, shelf-mount design. Wireless audio is handled by the Samson Concert 288 all-in-one dual-channel microphone system, offering multiple microphone options with a range of up to 300 feet, making this system ideal for presentations, training sessions, and collaborative meeting environments.

Sound System Features:

• Easy-to-install 70V drop tile ceiling sound system with omnidirectional coverage
• SD5 speaker array delivers 360° x 180° coverage for clear speech intelligibility
• Three 5.25" drivers paired with a 3" tweeter for balanced full-range audio
• Compact MA120BT 7-channel mixer amplifier with Bluetooth, MP3/USB/SD playback
• Supports multiple audio sources including wired microphones, laptops, and Bluetooth-enabled devices
• Reliable wireless microphones with dual-channel UHF operation and a 300 ft range
• Quick setup in standard 2'x2' or 2'x4' drop ceilings

About the System Components

Pure Resonance Audio SD5 SuperDispersion® Drop Tile Ceiling Speaker Array

The SD5 speaker array provides 360° x 180° omnidirectional coverage using three 5.25" drivers and a 3" tweeter. Its proprietary tweeter and wave-guided housing reduce frequency cancellation and ensure clear speech intelligibility throughout the room. Designed for quick installation in standard 2'x2' or 2'x4' drop ceilings, the SD5 delivers professional-grade audio with minimal setup.

Pure Resonance Audio MA120BT 7-Channel 120W Bluetooth Mixer Amplifier

The MA120BT mixer amplifier delivers 120W of clean audio across seven channels, supporting 70V, 100V, 4Ω, and 8Ω speaker outputs for versatile integration. Bluetooth streaming allows easy connection to laptops, tablets, and mobile devices. This amplifier features a compact, shelf-mount design, passive cooling, and protection against short circuits, overload, high temperatures, and clipping. Ideal for classrooms or conference rooms, it supports multiple wired and wireless audio sources with full-range, low-distortion sound.

Samson Concert 288 All-In-One Dual Channel Wireless System

The Samson Concert 288 system provides dual-channel UHF wireless microphones with a reliable range of up to 300 feet. The system includes the CR288 receiver, CH288 handheld transmitter with Q6 dynamic microphone capsule, CB288 beltpack transmitter, LM5 lavalier microphone, and HS5 headset microphone. Multiple microphone options and frequency-agile performance ensure clear audio for presentations, lectures, and group discussions.

System & Component Videos

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

• Omnidirectional coverage pattern provides 360° x 180° of consistent frequency response
• Powerful proprietary tweeter design with a lower crossover point improves vocal performance
• Wave-guided housing directs sound where it needs to go
• Ported enclosure is acoustically optimized and tuned with bass-reflex for turbulence reduction
• Low-profile metal back-box designed for easy drop-in installation into standard 2'x2' or 2'x4' ceiling grids
• Thumbwheel selectable 8-ohm nominal and 70V inputs compatible with any commercial or stereo amplifier
• Quick installation: simply remove one ceiling tile and drop the SD5 into the grid
• Safety carabiner kit included for secure suspension (not required in system description)

Pure Resonance Audio MA120BT 7-Channel 120W Bluetooth Mixer Amplifier

• Compact, high-efficiency shelf-mount design ideal for small to medium commercial installations
• Provides 120W of reliable power for distributed audio systems
• Bluetooth-enabled for easy wireless music streaming
• Seven input channels for flexible integration with microphones, audio sources, and paging devices
• Built-in MP3 media player with USB, SD, and FM radio functionality
• Supports 70V, 100V, 4Ω, and 8Ω speaker output configurations
• Frequency response of 60 Hz to 15 kHz with <0.5% THD ensures clean, accurate sound
• High signal-to-noise ratio: Line ≥ 85 dB; Mic ≥ 72 dB
• Passive cooling design—no fan—for silent, reliable operation during long hours
• Short-circuit, overload, high-temperature, and clipping protection for system safety
• No dedicated emergency priority input; suitable for non-emergency paging applications
• Includes IR remote control for convenient volume and playback control

Samson Concert 288 All-In-One Dual Channel Wireless System

• Dual-channel, high-performance UHF wireless system
• Includes CR288 receiver, CH288 handheld transmitter with Q6 dynamic microphone capsule, CB288 beltpack transmitter, LM5 lavalier microphone, and HS5 headset microphone
• 1/4" audio cable, AC adapter, and rackmount kit included for simple setup
• Multiple frequency options for interference-free performance in any environment
• Supports up to 24 systems operating simultaneously (region dependent)
• Separate volume controls for each wireless signal
• Dual balanced XLR outputs for routing signals to two separate mixer channels
• 1/4" unbalanced mix output to combine signals to one output channel
• Wireless operating range up to 300 feet for reliable coverage in classrooms and conference rooms

• (1) Pure Resonance Audio SD5 SuperDispersion® Drop Tile Ceiling Speaker Array
• (1) Safety Cable Kit: (4) Steel Safety Cables, (4) Carabiners and (4) Fastlinks
• (1) Pure Resonance Audio MA120BT 7-Channel 120W Bluetooth Mixer Amplifier
• (1) IR Remote Control
• (1) Power Cord
• (1) Samson Concert 288 All-In-One Dual Channel Wireless System:
• (1) Samson CR288 Receiver
• (1) Samson CH288 Handheld Transmitter with Q6 Dynamic Microphone Capsule
• (1) Samson CB288 Beltpack Transmitter
• (1) Samson LM5 Lavalier Microphone (with Locking Connectors)
• (1) Samson HS5 Headset Microphone (with Locking Connectors)
• (1) 1/4" to 1/4" Audio Cable
• (1) Rackmount Kit
• (1) Power Supply
• (2) Pure Resonance Audio XLRF-3-PREP Female XLR to Prep Patch Cables - 3ft
• (100') West Penn 224 18/2 Non-Plenum Audio Speaker Wire - Gray