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IR Wireless Classroom Sound System
IR Wireless Classroom Sound System

Minimum Order: 0
Quality/Safety Certification: 0.00

1)Infrared light transmit signal,
2)independent amplifier and passive speaker.
3)no string frequency.

IR wireless classroom sound system KS668-A Sound Field Classroom Audio System help’s improve student achievement and reduces teacher’s vocal fatigue.


KS668-A Classroom Amplification System Solution is a perfect complete audio system solution package for classrooms, houses of worship, corporate training rooms, instructional environments and any venue where single or multi-room wireless communication is required. The IR microphone system eliminates the worries of RF and complicated RF frequency allocations in multi-room applications. No interference problem consistent with RF wireless, limited RF licenses and our IR receiving and transmission complies with international regulations. These systems are suitable for small sealed spaces, conference room, classrooms and instructional environments. The system capable of operating over 500 rooms simultaneously.

Functions :

1. The transmitter can be recharged in the host box and earphone can be locked in it ,which is easy to manage.when locking, naughty children can not open to change the frequency.

2. Built-in trasmitter charging function,to ensure access to electricity in any time and when the battery gets full, the charger will cut off automatically.

3. Has the functions of audio output, input,high and low volume ,digital reverb.

Can be upgraded to dual-band receiver KS-668 AB type,which is best for interactive teaching.

4.The standard receiving area is 200 sqm, outfitted two speakers, the maximum power is 100W.

5. The enhanced receiving area is 400 sqm, outfitted four speakers, the maximum power is 200W.





10.04''x3.27''x14.30''( 255x83x363mm)

Frequency Range


Reception Angle

360 degrees

Power Requirements

220VAC  50Hz

Reception sensitivily

> 85dB


> 80dB

IR Receive Frequency

2MHz (encrypted)

Infrared Ray Wavelength


Wired microphone interface




Standard  Assembles

The wall-mounted host 


KS-HG/KS-HD transmitter

1 in 2

Passive speaker 


Out-fitted receiver

1pc (including15m signal line)

Enhanced  Assembles

The wall-mounted host 


KS-HG/KS-HD transmitter

1 in 2

Passive speaker 


Out-fitted receiver

2pcs(including 30m signal line)

there are two kinds of mirophone for your reference, handhold MIC and chest-worn MIC with collar-clamp or headwear. You can choice the one u like.


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