VoiceLink™ III Receiver

PN: IR-255

Non-amplified 2 channel infrared microphone receiver

A Sound Field system that supports infrared wireless microphones and multiple classroom audio sources.

The VoiceLink™ III system is a two-channel infrared wireless microphone system that can be an addition to any existing sound system in virtually any room. It allows for simultaneous use of an instructor and student microphone, plus two each audio inputs and outputs provide the flexible to add additional multimedia to your classroom audio. Infrared technology ensure the highest vocal quality and interference-free transmission.





VoiceLink™ III Receiver Details


  • Two infrared wireless microphone channels
  • One 3.5mm front panel input for Aux/ Comp
  • One 3.5mm front output for Lesson Capture
  • RCA audio input for DVD or video player
  • One balanced line output 3-pin phoenix connector
  • Unbalanced output, 1/4″ phone
  • Excellent for recording with an active board for internet podcasts
  • Easy to interface with projectors
  • Two external sensor inputs for ultimate coverage
  • Mounting brackets
  • WC-400 Wall mount cabinet


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

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

1,600 sq ft

Line Input

Computer/aux 3.5 mm front or dual RCA input rear panel

Line Output

• Balanced line: 3-pin Phoenix connector • Unbalanced line: ¼” phone Lesson Capture with 3.5 mm level control (front panel)

Power Supply

12 V DC, 0.6 A, 7.2 W

Dimensions 7 × 8.375 × 1.75 in
Weight 1 lbs 7.04 oz

VoiceLink™ III Receiver Components

Classroom Component Layout

  • Sapphire (IRT-60) wireless pendant transmitter, a high-quality cardiod microphone with lanyard.
  • ICS-55 Ceiling Sensor gives 360-degree infrared coverage for optimal audio performance.
  • VoiceLink Plus Sound Field amplifier/receiver to support classroom audio sources.
  • SP-628 Ceiling Speakers (four shown) provide excellent quality voice reproduction.
  • SP-2000 Wall Mount Speakers (optional), allow for installation when ceiling is not accessible.

VoiceLink™ III Receiver Downloads