Pure Resonance Audio Conference Room Sound System with 2 SD4 SuperDispersion Ceiling Speaker Arrays and RMA240BT 240W Bluetooth Mixer Amplifier

The Pure Resonance Audio SD4 Conference Room Sound System delivers powerful, full-range audio coverage for conference rooms, boardrooms, meeting rooms, training spaces, and presentation halls. Designed for maximum speech clarity and even sound distribution, this premium system includes two 2'x2' SD4 SuperDispersion® omnidirectional drop tile ceiling speaker arrays paired with a high-performance 240W rackmount Bluetooth mixer amplifier. The result is smooth, consistent sound throughout the entire space — ensuring every word and presentation is heard clearly.

The SD4 SuperDispersion ceiling speakers feature a unique 360° x 180° design that evenly disperses audio in all directions, creating balanced coverage without dead zones. Each speaker array houses four 6.5-inch aluminum woofers for outstanding vocal intelligibility and music reproduction. The RMA240BT 5-channel amplifier provides 240 watts of clean, efficient power with Bluetooth connectivity and multiple input options — ideal for connecting microphones, AV equipment, projectors, computers, and more. This combination makes it an all-in-one, professional-grade solution for conference and meeting environments that demand superior sound and reliability.

Key Features

• Complete professional system: Includes two SD4 SuperDispersion® ceiling speaker arrays and a 240W rackmount Bluetooth mixer amplifier.
• 360° coverage: Each SD4 array delivers smooth, even sound dispersion for consistent room-wide clarity.
• Bluetooth streaming: Wirelessly connect smartphones, tablets, or laptops to play music or meeting audio.
• Flexible input options: Supports microphones, projectors, AV systems, and computer audio.
• Powerful performance: 240 watts of amplification for crystal-clear audio reproduction.
• Low-profile design: 2'x2' drop tile speakers blend seamlessly into standard ceiling grids.
• Ideal for: Conference rooms, boardrooms, classrooms, and training facilities.

Technical Specifications

SD4 SuperDispersion Ceiling Speaker Array

• Power Handling: 160W RMS
• Frequency Response: 45Hz - 20kHz
• Sensitivity: 92dB (half space)
• Impedance: 8 Ohms (with built-in 70V transformer)
• Transformer Taps (70V): 4W, 8W, 16W, 32W, 64W
• Bypass: 8 Ohm
• Drivers: (4) 6.5-inch Aluminum full-range woofers
• Dispersion: 360° x 180° omnidirectional
• Backbox Depth: 2.8 in (71.12 mm)
• Dimensions (H x W x D): 23.8 in x 23.8 in x 5.8 in (603 mm x 603 mm x 146 mm)
• Weight: 25 lb (11.34 kg) each

RMA240BT 240W Bluetooth Mixer Amplifier

• Rated Power Output: 240W
• Speaker Outputs: 4 - 16Ω / 70V
• Frequency Response: 80Hz - 16kHz ±3dB
• S/N Ratio: MIC1,2,3: 66dB; AUX1,2: 85dB
• THD: 0.05%
• Cooling Mode: Forced fan with variable speed cooling and side entry airflow
• Protection: Overheat and short-circuit protection
• Power Consumption: 300W
• Voltage: 110 - 120V, 60Hz
• Remote Control: IR remote with replaceable CR2025 3V lithium battery
• Dimensions (H x W x D): 1.73 in x 19.05 in x 11.61 in (44 mm x 484 mm x 295 mm)
• Weight: 11.5 lb (5.22 kg)

What’s in the Box

• x2 Pure Resonance Audio SD4 SuperDispersion Ceiling Speaker Arrays
• x2 Safety Cable Kits
• x8 Steel Safety Cables
• x8 Carabiners
• x8 Fastlinks
• x1 Pure Resonance Audio RMA240BT 240W Bluetooth Mixer Amplifier
• x1 IR Remote Control
• x1 Power Cord
• x1 250ft Roll of 18/2 Gauge Speaker Wire