Training Room Sound System Featuring a Ceiling Tile Speaker & Bluetooth Mixer Amplifier

$ 899.98
$ 712.99


360° SuperDispersion Ceiling Speaker Array and 120W Bluetooth Mixer Amplifier

This training room sound system provides crystal clear audio with 360° coverage and easy-to-use Bluetooth wireless audio streaming capability. With 6 inputs it makes it easy for instructors to connect multiple audio sources to the sound system. Instructors can connect a wired or wireless microphone to vocal strain. This ceiling speaker system is perfect for training rooms, training centers, presentation rooms, instructional workshops, meeting rooms and other applications where high-performance audio quality and the integration of multiple media formats is needed.


An Affordable Training Room Sound System with Outstanding Quality

SuperDispersion® 360° x 180° omnidirectional coverage

The SD4 has 360° of seamlessly smooth coverage which greatly improves speech intelligibility and provides powerful crystal clear music reproduction.

Easy to install

The SD4 takes minutes to install. Just remove one ceiling tile and drop the SD4 into any standard 2x2 or 2x4 drop tile ceiling.

4 - 6.5" Full-Range Speakers

Employs four powerful 6.5" speakers that work in unison producing smooth seamless coverage and speech intelligibility, providing powerful crystal-clear media reproduction that is key for learning environments.


The MA120BT is equipped with inputs for wired or wireless microphones, CD/DVD players, projectors, laptops, computers, and other devices.


The MA120BT supports playback from Bluetooth-enabled devices such as PCs, iPads, tablets or smartphones, enabling anyone to walk-in and link up with wireless Bluetooth connection.


The included remote control manages volume levels, play/pause, skip and more all from a distance.



This training room sound system provides 360° of crystal-clear audio coverage with simple Bluetooth connectivity. Installation is simple - just take out one ceiling tile and drop the SD4 into any standard 2x2 or 2x4 drop tile ceiling. No cutting of ceiling tiles involved!

Create a better learning experience with this training room audio system by connecting the audio output from your projector or Bluetooth device. Play audio from your USB thumb drive or SD card, or connect additional audio sources like an MP3 player, CD/DVD player, laptop or projector.

Train large groups without vocal strain! Instructors never have to worry about losing their voice again with this training room sound system package. The MA120BT allows you to connect a wired or wireless microphone, while the SD4 provides crystal-clear vocal reproduction.

This training room sound system includes our 2'x2' SD4 SuperDispersion ceiling speaker array with outstanding 360° high-quality audio coverage featuring four 6.5" very fast transient response aluminum-woofer drivers in a fire-retardant ABS housing that can be painted to match any decor. Also included is our MA120BT 120 watt Bluetooth mixer amplifier. This amplifier features 7-channels/6 inputs including a USB port, SD card slot, XLR and 1/4" mic inputs, and RCA inputs, allowing you to connect multiple sources. The MA120BT also comes with an IR remote to control the unit from across the room. This training room ceiling mount speaker package is ideal for any educational or training and development environment where high-quality audio is needed.



Power Handling: 160 Watts

Frequency Response: 35 Hz - 20 kHz

Sensitivity: 92dB (half space)

Impedance: 8 ohms with Built-in 70V transformer

Woofers: 4 - 6.5" aluminum drivers

70V Transformer Taps: 4, 8, 16, 32, 64W ;8 ohm Bypass

Dispersion: 180 x 360 Degrees (hemispherical)

Dimensions: 23.75" (603 mm) x 23.75" (603 mm) x 5.75" (146 mm)

Net Weight: 25 lbs (11.34 kg)



Rated Power Output: 120W

Speaker Outputs: 70V, 100V and 4 Ohms, 8 Ohms or 16 Ohms

Mic 1 input by balanced XLR with phantom power
Input 2-3 Mic/Line switchable unbalanced 6.3 mm phone jack
Line 1-2 inputs by RCA; Line output by RCA

Frequency Response: 60Hz - 15kHz (±3dB)

Protection: Short-circuit, clip, overload and high temp protection

Dimensions: 3.5" (88 mm) x 11.8" (300 mm) x 10.8" (275 mm)

Weight: 6.6 lbs (3 kg)


(1) Pure Resonance Audio SD4 SuperDispersion Drop Tile Ceiling Speaker Array
    (1) Mounting Kit
         (2) Steel Cables
         (2) Carabiners
         (2) Fastlinks
(1) Pure Resonance Audio MA120BT 120W Commercial Mixer Amplifier
         (1) IR Remote Control
         (1) Power Cord
(50') Free 18/2 Gauge Speaker Wire


SD4 Ceiling Speaker:


Cut Sheet

MA120BT Mixer Amplifier:


Cut Sheet