Conference Room Sound System with SD5 SuperDispersion Ceiling Speaker Array, RMA240BT 240W Rack Mount Bluetooth Mixer Amplifier and 8 Discussion Mics

Inside the Design

This premium conference room sound system delivers exceptional 360° vocal clarity and intelligibility for meetings, discussions, and video conferencing applications. The SD5 SuperDispersion® ceiling speaker array provides wide, even coverage, while the upgraded RMA240BT Bluetooth mixer amplifier offers a powerful 240W of clean, reliable audio performance. Eight Apex146 desktop condenser microphones ensure clear communication with silent switching and ready-status LED indicators. Designed for conference rooms, boardrooms, and collaboration spaces, this complete system provides professional-grade audio pickup, balanced sound distribution, and dependable operation for any spoken-word environment.

Sound System Features:

• 360° x 180° room coverage for consistent, clear sound throughout the space
• High-performance SD5 speaker with enhanced vocal intelligibility and uniform distribution
• Upgraded 240W Bluetooth mixer amplifier with USB, TF, FM tuner, and multiple input options
• Eight Apex146 desktop microphones with silent touch-switch and LED talk status indicators
• Expandable system integrates easily with mixers, DSP, conferencing hardware, and AV systems
• Includes essential accessories for installation, power distribution, and audio routing

About the System Components

Pure Resonance Audio SD5 SuperDispersion® Ceiling Speaker Array

The SD5 SuperDispersion® ceiling speaker array delivers powerful 360° x 180° coverage, ensuring consistent sound throughout the room. Featuring three 5.25" drivers paired with a proprietary 3" tweeter design, the SD5 provides superior speech intelligibility, reduced frequency cancellation, and improved overall clarity. With selectable 8Ω and 70V operation and a drop-in tile installation, this lightweight and low-profile array is ideal for commercial environments requiring wide, even audio distribution.

Pure Resonance Audio RMA240BT 5-Channel 240W Bluetooth Mixer Amplifier

The RMA240BT offers 240W of high-performance commercial audio power with a lightweight 1RU rackmount chassis. This amplifier features Bluetooth streaming, USB/TF media playback, FM radio, and multiple mic and AUX inputs for flexible integration. Built-in protection circuitry prevents overheating, short circuits, and overloads, while the emergency channel input ensures critical announcements take priority. With both 4-16Ω and 70V outputs, the RMA240BT provides exceptional versatility for conference room sound reinforcement. The included IR remote enables simple control from across the room.

Apex Apex146 Desktop Condenser Microphones

The Apex146 desktop microphones deliver professional speech pickup for conference and discussion applications. Each microphone includes a silent touch-switch offering ON/OFF, Push-to-Talk, or Push-to-Mute modes without unwanted noise. The integrated LED ring clearly indicates microphone status, making the system easy for participants to use. Ideal for meeting rooms and panel discussions, the Apex146 ensures clean, intelligible audio and user-friendly control.

ART USB Mix 3-Channel USB Mixer

The ART USB Mix is a compact 3-channel USB mixer that integrates seamlessly with computer-based conferencing systems. It provides clean preamps, intuitive controls, and flexible routing options for combining microphones and media sources. With both analog and USB connectivity, it serves as a reliable bridge between your microphones, mixers, and digital communication platforms.

Shure SCM810 8-Channel Automatic Mixer

The Shure SCM810 is an industry-standard automatic mixer designed to manage multi-microphone environments with ease. Its IntelliMix® technology automatically activates microphones as needed while minimizing noise, feedback, and crosstalk. Ideal for conference rooms and panel discussions, the SCM810 ensures smooth, balanced audio without requiring manual adjustments, providing consistent professional performance.

ART PB4X4 PRO USB Power Distribution System

The ART PB4X4 PRO delivers high-quality, reliable power distribution with built-in filtering and surge protection. Featuring an illuminated power meter and two USB charging ports, this unit provides clean power to your amplifiers, mixers, and supporting AV equipment. It enhances system stability and ensures long-term reliability for demanding conference room installations.

System & Component Videos

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

• Omnidirectional 360° x 180° coverage for consistent, evenly distributed audio throughout the room
• Proprietary tweeter with a lower crossover point enhances vocal clarity and intelligibility
• Wave-guided housing directs sound precisely for improved performance
• Acoustically optimized ported enclosure with bass-reflex tuning reduces turbulence
• Low-profile metal back-box includes built-in safety suspension points
• Thumbwheel-selectable 8Ω or 70V inputs for wide amplifier compatibility
• Fast installation—drops directly into any standard 2'x2' or 2'x4' ceiling grid
• Includes safety cable kit with braided steel cables and adjustable SpeedClamp™ fasteners

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

• High-efficiency, lightweight 1RU rackmount chassis engineered for commercial reliability
• Built-in MP3 media player with USB, TF card, Bluetooth streaming, and FM tuner
• Includes 1 emergency channel input, 2 AUX inputs, and 4 MIC inputs for flexible system integration
• Bass and treble tone controls allow precise audio shaping
• Level, overload, and protection indicators guard against overheating, short circuit, and overload
• Advanced high-performance amplifier circuitry ensures clean, stable output
• Compatible with 4-16Ω and 70V distributed speaker systems
• Delivers a powerful 240W rated output for medium to large commercial audio zones
• Forced-air cooling system automatically adjusts fan speed based on temperature
• Includes IR remote control for convenient system operation

Apex Apex146 Desktop Condenser Microphones with Silent Switch

• Heavy-duty solid metal base provides stability and durability
• Large silent-operation touch switch eliminates pops and mechanical noise
• Three selectable switch modes: Lock-On, Push-to-Talk, or Push-to-Mute
• Highly visible LED ring clearly indicates microphone ON/OFF status
• Integrated switchable high-pass filter improves speech clarity
• Flexible gooseneck allows precise microphone positioning

ART USB Mix 3-Channel USB Mixer

• USB-powered for plug-and-play operation with no external power supply required
• Balanced XLR or unbalanced 1/4" instrument inputs with switchable impedance
• Low-noise +48V phantom power for condenser microphones
• Balanced 1/4" TRS inputs support mono or stereo line-level sources
• 1/4" TRS outputs support balanced or unbalanced lines
• Dedicated 1/4" TRS headphone output with independent level control
• Independent controls for both input channels, main output, and headphone monitoring
• Signal/clip LED indicator ensures proper gain staging
• Switchable USB playback assignment to channels 2 and 3

Shure SCM810 8-Channel Automatic Mixer

• Eight balanced mic/line input channels with Phoenix block connectors
• One unbalanced 1/4" auxiliary input for external media sources
• Eight unbalanced 1/4" direct line-level outputs for individual channel routing
• Balanced master line-level output (Phoenix block)
• Selectable 46V phantom power per channel for condenser microphones
• Peak output limiter with selectable level for system protection
• Full rack-width chassis for easy integration into equipment racks

ART PB4X4 PRO USB Power Distribution System

• Advanced Power Filtering (APF) improves clarity and reduces noise in audio equipment
• 1800-watt power capacity with built-in surge and spike protection
• EMI and RFI filtering ensures stable, clean power delivery
• Eight rear outlets with adapter-friendly spacing
• Front-mounted unswitched convenience outlet
• Rear gooseneck work light for rack illumination
• Includes two USB charging ports for accessories or mobile devices

• (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 RMA240BT 5-Channel 240W Bluetooth Rack Mount Mixer Amplifier
• (1) IR Remote Control
• (1) Power Cord
• (8) Apex Apex146 Desktop Condenser Microphones with Silent Switch
• (1) ART USB Mix 3-Channel USB Mixer
• (1) Shure SCM810 8-Channel Automatic Mixer
• (1) ART PB4X4 PRO USB Power Distribution System with 2 USB Charging Ports
• (1) Hosa CPR-201 Stereo Interconnect Audio Cable - 3.3ft
• (8) Pure Resonance Audio XLR-25 Female XLR to Male XLR Cables - 25ft
• (1) Pure Resonance Audio PREP-3-PREP Prep to Prep Patch Cable - 3ft
• (50') West Penn 225 16/2 Non-Plenum Audio Speaker Wire - Gray