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Infrared Classroom
Audio System

The Infrared Audio System delivers optimal sound quality and reception using audio technology that enhances classroom learning, participation and student comprehension.

At the heart of the system is a central control panel, through which all of audio passes before being amplified out to the entire classroom. There are two wireless channels for voice amplification – one for the teacher mic and the other for students. Teachers love the comfy headset mic and connected transmitter because it helps saves their voice, leaving them feeling less fatigued at the end of the day. Students share their own wireless handheld mic and feel validated when their peers can hear everything that's said. An optional wired mic can also be used for a third presenter at the same time. Both wireless mics are recharged overnight once placed into their control panel holders and after eight hours are ready for a full day's use on a single charge.

Two ceiling-mounted sensors (twice the industry norm) receive the audio from both wireless mics and create an expanded coverage area for both of the wireless mics, preventing signal “drop outs”. This ensures no words are lost in classrooms up to 2,000 square feet.

In addition to amplifying audio played from MAC & PC computers and other audio sources, the system has an additional output designed to support a supplemental assistive listening system for students with special hearing needs. The Infrared Audio system can also be connected with teleconferencing systems (such as Microsoft® Netmeeting) without the worry of annoying feedback so everyone in class can listen to and participate in the distance learning opportunities, Skype® sessions and clearly hear connected announcements made from the school's main office.

Amplified audio for the Infrared Classroom System is routed through a choice of two or four array speakers of two or four ceiling speakers. Array speakers (PI30-SP) projects the audio at the audience with a narrower projection pattern. The tighter dispersion angle doesn't create disruptive background noise since the sound won't be bounced off walls and windows. Array speakers distribute the sound more evenly so the volume levels are the same at the front & rear of the room. The ceiling speakers are engineered with a frequency response that's optimal for vocal reproduction and multimedia presentations.

The Califone Infrared Classroom Audio Systems will help:

  • Improve academic achievement
  • Increase on-task behavior
  • Increase attention to verbal instruction
  • Improve comprehension for English Language Learners
  • Improve ease of listening and teaching
  • Reduce vocal strain and fatigue on teachers
  • Works with PC/MAC teleconferencing systems such as Microsoft® Netmeeting so the entire class can participate in distance learning applications

The benefits of the Infrared Classroom Audio System are enhanced by its use of “array” speakers. Array speakers are most commonly seen at concerts and they deliver several advantages of being used in the classroom:

  • Array speakers target a tighter sound pattern directly at the audience with a narrower projection pattern. (A wider pattern bounces the sound off the walls and windows, which adds additional disruptive background noise to the very environment the system was installed to overcome.)
  • Array speakers distribute the sound more evenly so the volume levels are the same at the front & rear of the room.

MSRP $1,111

Two Speaker System

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MSRP $1550.60

Four Speaker System

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Installed Audio

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PA-IRSYSWireless & Blended Learning
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PA-IRSYSBWireless & Blended Learning
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PAIRSYSBCSWireless & Blended Learning
PAIRSYSCSWireless & Blended Learning
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inside panel
The Classroom Infrared Audio System
  • inside panel
  • The Classroom Infrared Audio System
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Infrared Mic
Transmitting & Receiving ModeIR
Transmitting & Receiving Frequency2.35MHZ or 2.85MHZ
Wireless Transmission RangeApproximately 40 ft., for rooms up to 2,000 sq. feet
Current Consumption240mA
AF Output650mV AF 1kHZ
Mic. InputsBalanced and unbalanced, condensor (XLR, 1/4", 3.5mm)
Line Output1/4"
AC Power Requirements110 – 125 VAC, 50/60 Hz
ModulationFM (Frequency Modulation)
Sensitivity7 microvolts
Frequency Response50 Hz - 15 KHz +/- 3dB
Dynamic Range100 dB
BatteryTwo 1.2V (AA) or Two 1.5V
(not included)
Student Hand Held Microphone
Sub-carrier Frequency2.85MHz
MicrophoneUnidirectional, dynamic
Power2-'AA' NiMH Rechargeable batteries (not included)
Recharging StationIncluded
Audio Power30 Watts RMS
Power Requirements18VAC 50 VA
Speaker Connectionsfor 2 speakers
Inputs2 - Mono (RCA type, Hi Z, Mixed)
Auxiliary Volume Control1
Sub-carrier Frequency2.35 MHz or 2.85 MHz
TypeSuper heterodyne - crystal controlled
Signal / Noise>80 dB
Image Rejection40 dB
Reception Sensitivity>25dBuV ±40kHz
CondensorBalanced and unbalanced ( 3.5mm, XLR, 1/4") mic inputs, aux in and line out
Array Speakers
2 - Non-Powered Array Speakers (PI30-SP)

2 - Powered Array Speakers (PI30-PS)
2 - Non-Powered Array Speakers (PI30-SP)
External Infrared Dome Sensors
TypeTwo (2) 360 degree ceiling mounted infrared sensors for optimal coverage of infrared signal pickup throughout the entire classroom
Cable Length30 ft standard
PowerPowered by receiver
Size3.9" (D) x 1.2" (thick)
Weight7.5 oz each
Sensor TypeLensed infrared diode
Lensed Diodes6
Reception Angle360 degrees
Storage Cabinet
ConstructionLockable steel case stores mics
Charging PortsBuilt-in for beltpack transmitter & handheld mic
Dimensions10.6"L x 4.75"W x 11.8"H
SafetyACWall adapter is C-UL/CE approved
ship weight 39 lbs., 1 carton

ship weight 45 lbs., 2 cartons
Warranty6 years from date of purchase (PA only, all other parts one year)
Updated on: 2/12/15
Blended Learning Wireless Washable Non-Washable
Q: Which wired microphone is compatible with the Infrared Classroom Audio System? Is it PADM-510 or PADM-515?
Q: What is the level control knob near the paging input on the infrared classroom system for?
Q: Can the Q319 handheld wireless microphone be used interchangeably with the wireless microphone that comes with the PA-IRSYS?
View all FAQs