Quantum™ II Amplified Classroom Audio System

PN: IRC-360
Portable | All-in-One Sound Field System






Build Your System


Quantum™ II Amplified Classroom Audio System Description

The Quantum™ II is a completely self-contained infrared wireless microphone sound system. Two wireless microphones can be used simultaneously–one for the teacher and one handheld for student participation or co-teaching. It is lightweight and convenient to sit on a desk, mount on a wall (mount bracket included), or attached to a standard microphone stand or tripod via a threaded attachment on the bottom.

Quantum™ II Amplified Classroom Audio System Details


  • 2 infrared wireless microphone receiver channels Powerful 30 W, low noise, class D digital audio amplifier
  • Digital equalization and limiting Efficient full range coaxial speaker
  • Built-in wide-angle infrared sensor for reliable 180° IR reception
  • Tone control, ±6 dB, to control treble & bass
  • 3.5 mm auxiliary line level input for computer, interactive whiteboard or audio device
  • 3.5 mm line output for Lesson Capture or Assistive Listening System (ALS)
  • External speaker output for companion speaker to expand sound coverage (50 W total)
  • 2 external microphone sensor inputs, single RCA
  • 3/8"-16 threaded insert for speaker stand mount
  • Wall mount bracket included
  • Companion speaker with wall bracket
  • Folding speaker stand


Weight 4.25 lbs
Dimensions 4.75 × 6.125 × 14 in
Receiver Input

Infrared FM


FM wide-band

Reception Frequencies

Ch. A: 2.08 MHz
Ch. B: 2.54 MHz

Infrared Wavelength

850 nm

Tone Signal

Ch. A: 32.768 kHz


50 μs

Frequency Response

50 Hz – 15 kHz, ±3 dB

S/N Ratio

>65 dB

Total Harmonic Distortion

<1 % @ 1 kHz

Nominal Deviation

±10 kHz

Maximum Deviation

±25 kHz

External Sensor Input

2, RCA

Connectivity Coverage

900 sq ft, 60 ft line of sight

Aux Input

3.5 mm with gain control

Line Output

3.5 mm with gain control


Tone control, ±6 dB

Output Power

30 W (RMS)

External Speaker Output

20 W / 4 Ω

External Speaker Connection

2 terminal phoenix connector

Power Supply

19 VDC / 3.4 A; CE, CSA and UL Listed

Quantum™ II Amplified Classroom Audio System Components

Classroom Component Layout

  • Sapphire (IRT-60) wireless pendant transmitter, a high-quality cardiod microphone with lanyard.
  • Quantum™ II Sound Field amplifier/receiver to support classroom audio sources.
  • Companion Speaker to expand the sound coverage and increase total output to 50 watts.
  • IRH-35 Wireless Handheld Microphone. Perfect for student participation or co-teaching.

Quantum™ II Amplified Classroom Audio System Downloads

Quantum™ II Amplified Classroom Audio System Frequently Asked Questions

  • add_circleremove_circle_outlineI need Portable Audio. What is my best option?

    For regular classroom use, many teachers prefer to use the Quantum II for infrared wireless transmission. This system uses the same Sapphire Pendant transmitter that is used with the infrared classroom sound-field systems. This unit will cover up to 1800 square feet and must be used indoors. This amplifier can be wall mounted, installed on a tripod stand or free standing on a shelf or cabinet.