SonoField Classroom Sound Field System

One of the components of CETRIX solution for schools is SonoField Classroom Sound Field System. SonoField enhances audibility of sound and audio by creating an even sound field at all points of the room. Using IR wireless microphones, and high dynamic range surface mount loud speakers, the system is easy to install, learn and use.

General Details

SonoField Classroom Sound Field System

Every educator conducting a classroom session, no matter what the level and subject is, essentially relies on hearing comprehension of the learners. therefore, to a great extent, the quality of learning depends heavily on the ability of the students to hear the words of the teacher clearly and at normal loudness. But factors such as the distance from the teacher, poor room acoustics, hearing problems, and non-native students can dramatically lower the quality of education in classrooms.

Sound Field Systems

The SonoField by CETRX is designed to enhance audio quality and distribution in a classroom by eliminating most of the factors that degrade student hearing and comprehension. SonoField creates a Sound Field in the classroom by using two or more speakers to evenly distribute the sound from different sources throughout the room. Depending on the size and geometry of the classroom, wall mounted or ceiling mounted load speakers are used.

IR Wireless Microphone

SonoField uses an infrared wireless microphone system for the teacher and students. IR wireless microphone uses optical waves that do not penetrate the walls of the classroom, making it possible to use the system in all classrooms in a school without the waves from one classroom interfering getting picked up by the wireless system in the next classroom. For convenience and freedom of movement and work with two hands, a necklace wireless microphone is used by the teacher. A handheld wireless microphone is dedicated to the students who for communication with the class and the teacher.

Features
  • Covers a classroom with an area of up to 1300 sq. ft. (120 sq. m)
  • Creates a sound field that ensures uniform sound quality and level throughout the classroom
  • Uses Infra-Red (IR) wireless microphones to confine the communication within the walls of the classroom
  • Integrates different audio sources into a single sound field system
  • Charging cradle for for wireless microphones
  • High-quality loudspeakers ensure clear, crisp audiophile sound
  • Customized loudspeaker configuration according to room size and geometry
  • Quick installation and configuration
  • Integration: Class D digital power amplifier, infrared wireless receiving module, feedback suppression module in one
  • Comes with USB MP3 playback function
  • Includes a campus broadcast priority function
  • Microphone treble and bass input adjustment knobs
  • 2 channels, supporting the simultaneous use of two wireless microphones
  • Infrared transmission interface: RJ45 network port, supporting up to 4 infrared sensors
Specifications

SonoField SP-W5240

IR Power Amplifier

Channels Two channels
Carrier Frequency Range A :2.06MHz
B :2.56MHz
Audio Frequency response 75Hz-15KHz ±3dB
T.H.D < 1%@10KHz
S/N >60dB(MIC)
>70dB(LINE)
>1OOdB(IR MIC)
Dynamic Range 100dB
RF Carrier Stability ±0.005% (-10°c-40’c)
RMS Output Power 2X 30W (8Ω)
Input Sensitivity 1.5mV(M IC)
150mV(LINE)
75mV(Balanced)
Input Impedance 2KQ (MIC)
47Q (LINE)
Input Interface 4X IR Sensors: 2X Unbalanced ;2X Balanced;
1X Wired Mic
1X Page In (70V/100V)
1X USB (for MP3 Player)
Output Interface 1X Unbalanced
2X Speakers (Phoenix plug)

IR Sensor

Sensor LED Multiple Array Wide-Angle Infrared Sensor LEDs
Cable Type High Quality Coaxial-Type Cable
Cable Length 15m-30m Selectable
Dimensions
Weight 300g (Cable included)
Wireless Radius >15m (Line of sight)
Infrared Wavelength 850nm
Coverage Angle 360°

Handheld Microphone

Wireless
Transmission Mode
Infrared (Wavelength: 850nm)
Carrier Frequency Range CHA 2.06 MHz
CHB 2.56 MHz
Pickup Sensor ECM (Condenser)
Charging Mode Mini USB Charger or Charging Cradle
Battery 1XAA size Rechargeable Lithium Ion Battery (3.7V)
Operating Time: 6 hours
Charging Time: About 2 hours)
Dimensions 28mm(42mm)x163mm

Pendant Microphone

Wireless
Transmission Mode
Infrared (Wavelength: 850nm)
Carrier Frequency Range CHA 2.06 MHz
CHB 2.56 MHz
Pickup Sensor ECM (Condenser)
Charging Mode Mini USB Charger or Charging Cradle
Battery 1XAA size Rechargeable Lithium Ion Battery (3.7V)
Operating Time: 6 hours
Charging Time: About 2 hours)
Dimensions 51mmx84mmX 26mm
lnpul Interface 3.5mm Mic

Speakers

Frequency response 80Hz-20KHz (±3dB)
Drivers Treble 3.5”×1
Bass 6.5×1
Diffusion angle 90°×80°
Impedance
Power (rated/peak) 60W/100W
Sound pressure level 93dB
Dimensions 215mm×230mm×330mm
Material+C13:D62 12mm solid wood
Accessories

Package Content

Power Amplifier
IR Sensor with Wire
Handheld Microphone
Pendant Microphone
Charging Cradle
Speakers (Pair)
User Manual
Warranty Card

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