Educational Assessment Technologies For The Classroom

TeachLogic IRM-5150 Maxim III Wireless Classroom Microphone System with Sapphire Mic & 4 lay-in Speakers

TeachLogic IRM-5150 Maxim III Wireless Classroom Microphone System


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Maxim III

The Maxim III is our premiere Digital hybrid sound-field system for use in the classroom. The four auxiliary inputs provide multimedia integration with even distribution of sound for all audio in the classroom. RS-232 wall panel control of the line inputs, Fire alarm mute connection (AC or DC), remote Teacher Security Alert, teacher priority with instant attenuation of the line levels via Sapphire IRT-60 pendant and Digital Feedback Guard (DFG) and switchable computer anti-hum circuit on computer input. The Maxim III also features an output for recording the day’s lesson capture.


  • 50-watt Digital Hybrid Class D amplifier
  • Two IR wireless microphone receivers
  • Remote Teacher Security Alert contact connection
  • Fire Alarm Mute Input for AC or DC from 5-24 volt
  • RS-232 wall panel control of line input levels
  • Remote Teacher Priority feature (over line inputs)
  • Page Pass-through with muting (even is AC power isn’t present), sensitivity control (25, 75, 100 volt)
  • Four Line inputs for DVD, Computer, Aux and MP3
  • Switchable computer anti-hum circuit
  • Five band equalizer: ± 12dB
  • Power sleep mode feature to conserve energy
  • Digital Feedback Guard (DFG)
  • Drop-in charger connection 5 volt DC, USB
  • Powers up to four (4) speakers


  • Wall Mount Cabinet WC400

TeachLogic IRT-60 overview

Well suited for classrooms and forums, the rechargeable IRT-60 Sapphire Infrared Transmitter/Microphone from TeachLogic offers the same aesthetic design and feature set as the IRT-55 Sapphire, but with an additional remote “Security Alert”, allowing teacher priority with instant attenuation of the line levels to work with the optional Forum 232 and Maxim III amplifiers.

The Sapphire can be worn with a lanyard or clipped directly to your neckline collar and offers a high level output, reliable connectivity, and great definition. With a built-in breath filter, the Sapphire can function as a pass-around hand microphone. Tapping the power button momentarily mutes the microphone, allowing for private conversations. The 3.5mm auxiliary input allows wireless playback of your iPod, while a three-position slide switch provides selections of low, medium, or high microphone volume levels. The included Lithium-Ion battery offers up to 9 hours use. The Sapphire IRT-60 ships with a BRC-15 wall charger and a breakaway lanyard.

  • Long-life Lithium-Ion battery
  • Rechargeable via micro USB cable
  • Battery level indicator, back light under power switch
  • Momentary mute button, backlight blinks in mute mode
  • Lightweight Design: 1.4 oz
  • Push “on/off” power
  • Channel A or B selectable
  • Three level microphone volume switch (low, medium, high)
  • Auxiliary input (3.5mm)
  • Low profile clip for mounting
  • Wear with a lanyard or directly to neckline collar
  • Includes BRC-15 wall charger

SP-628L Lay-In Ceiling Speaker

SP-628L is a 6.5″ two-way full range compact coaxial ceiling speaker, providing low distortion and a smooth natural frequency response ideal for articulate vocal clarity. The SP-628L is a complete loudspeaker assembly, with 12″ frame, perforated steel grill, and integrated steel back can and attached “T” bar for finish edge. Quick installation with minimal tile cutting.

Intended use: Indoor environment, mounted parallel to floor plane in a 24″ wide suspended ceiling tile grid.

Power: 30 watts continuous

Impedance: 8 ohm


  • White powder-coated
  • Speaker wire included with package: West Penn Wire, 100 ft, Plenum-rated, 18 gauge, 2-conductor.


  • The TeachLogic LS-4 Ceiling Speaker Package consists of four SP-628L Lay-in ceiling speakers.



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