Pure Resonance Audio Conference Room Sound System with SD4 Ceiling Speaker Array, 10 C3 Micro Ceiling Speakers, and RMA350BT 350W Bluetooth Mixer Amplifier

The Pure Resonance Audio Conference Room Sound System delivers premium vocal intelligibility and balanced audio coverage for large conference rooms, boardrooms, meeting spaces, and presentation environments. Combining the wide 360° sound dispersion of the SD4 SuperDispersion® ceiling speaker array with ten compact C3 micro ceiling speakers, this system ensures smooth, even sound throughout the room for speech, music, and multimedia applications.

The powerful RMA350BT 350-watt rackmount mixer amplifier provides versatile connectivity with Bluetooth streaming, multiple mic and line inputs, and simple controls for effortless operation. This comprehensive setup is ideal for environments requiring clear, natural sound reinforcement across a wide area while maintaining a clean, professional aesthetic.

Key Features

• Complete large conference room audio system: Includes one SuperDispersion® SD4 ceiling speaker array, ten micro ceiling speakers, and a 350W mixer amplifier.
• Exceptional vocal clarity: Provides full-range, even audio coverage with 360° dispersion for speech and presentations.
• Bluetooth streaming: Wirelessly connect phones, laptops, or tablets for easy playback.
• Multi-input capability: Supports microphones, computers, AV systems, and multimedia devices.
• Professional installation flexibility: Works perfectly in drop tile ceilings and integrates into professional environments.
• Ideal for: Conference halls, boardrooms, meeting rooms, classrooms, and training facilities.

Technical Specifications

SD4 SuperDispersion Drop Tile Ceiling Speaker Array

• Power Handling: 160W
• Frequency Response: 35Hz - 20kHz
• Sensitivity: 92dB (half space)
• Impedance: 8 Ohms with built-in 70V transformer
• Drivers: Four 6.5" aluminum woofers
• Transformer Taps: 4W, 8W, 16W, 32W, 64W @ 70V; 8 Ohm Bypass
• Dispersion: 180° x 360° hemispherical coverage
• Dimensions: 23.75" x 23.75" x 5.75" (603 mm x 603 mm x 146 mm)
• Weight: 25 lb (11.34 kg)

C3 3" 70V Micro Ceiling Speaker

• Frequency Response: 120Hz - 20kHz
• Low Frequency (-10dB): 180Hz - 20kHz
• Impedance: 8 Ohms with built-in 70V transformer
• Maximum Input Voltage: 17dBV (7.1V, 6W into 8Ω)
• Power Taps @ 70V: 1.5W / 3W / 5W
• Power Taps @ 100V: 3W / 6W / 10W
• Transducer: Full-range 3" driver
• Coverage: 130° conical
• Cutout Size: 4.25" (107.95 mm)
• Dimensions (Dia x D): 4.125" x 4" (104.78 mm x 101.6 mm) without connector; 4.125" x 4.69" (104.78 mm x 119.08 mm) with connector
• Weight: 1.6 lb (0.73 kg)

RMA350BT 350W Bluetooth Mixer Amplifier

• Rated Power Output: 350W
• 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 side-entry airflow
• Protection: Overheat / Short-circuit
• Power Consumption: 500W
• Remote Control: IR remote with replaceable CR2025 3V lithium battery
• Dimensions (H x W x D): 1.73" x 19.05" x 11.61" (44 mm x 484 mm x 295 mm)
• Weight: 13 lb (5.9 kg)

What’s in the Box

• x1 Pure Resonance Audio SD4 SuperDispersion Drop Tile Ceiling Speaker Array
• x1 Safety Cable Kit (4 steel cables, 4 carabiners, 4 fastlinks)
• x10 Pure Resonance Audio C3 3" 70V Micro Ceiling Speakers
• x1 Pure Resonance Audio RMA350BT 350W Bluetooth Mixer Amplifier
• x1 IR Remote Control
• x1 Power Cord
• x1 250ft Roll of 18/2 Gauge Speaker Wire