Quantum™ II Receiver

PN: IRC-360

Portable | All-in-One Sound Field System

The Quantum™ II is a completely self-contained infrared wireless microphone sound system for portable use or permanent installation. Two wireless microphones can be used simultaneously—one for the teacher and one handheld for student participation.

The Quantum™ II has a powerful 30-watt amplifier and a full range speaker for complete coverage of a typical classroom. It can be complemented by a companion speaker for improved sound distribution throughout the room.






Quantum™ II Receiver 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
  • 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 Receiver 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 Receiver Downloads

Quantum™ II Receiver 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.

  • add_circleremove_circle_outlineMy receiver won’t turn on – the power light is off. What should I do?

    • Verify that the power supply is plugged into both the receiver and a working wall outlet.
    • Test with another power supply.