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Williams AV IMA-240 Forum 232 Infrared Wireless Microphone Receiver Amplifier

Part # IMA-240
Model # IMA-240
The Williams AV IMA-240 Forum 232 is a 50W digital hybrid Class D amplifier with dual infrared microphone receivers, a 3-input mixer, 3-band EQ, and assistive listening output. Ideal for classrooms of any size, it supports hybrid learning, teacher priority, and DFG feedback prevention.
Availability: Usually arrives in 5-9 business days.

Please be aware that global supply shortages outside our control may interfere with our normal delivery times and product availability. For more information, email [email protected] or call us at 888-256-4112.

Description

Details

Williams AV IMA-240 Forum 232 Receiver Amplifier

The IMA-240 Forum 232 amplifier ensures that teachers' voices are heard clearly in classrooms of any size, whether in-person or hybrid. Equipped with two infrared microphone receivers, it supports simultaneous use of a hands-free RT-60N Sapphire and a pass-around IRH-35 handheld microphone (sold separately). The system integrates a 3-input audio mixer and 3-band digital equalizer for precise sound control, and easily connects to a computer to synchronize classroom audio with video conferencing applications.

This 50W digital hybrid Class D amplifier powers up to four 8-ohm classroom speakers. It provides two line-level outputs, including a rear-panel mixed output for assistive listening systems or lesson capture with adjustable gain. Features like Digital Feedback Guard, switchable computer anti-hum, and teacher priority instantly attenuating line inputs make it simple to manage audio in dynamic classroom environments.

Designed for versatility and convenience, the IMA-240 includes drop-in USB microphone charging, accommodates up to three ceiling sensors for larger spaces, and can be installed on a shelf, wall, or optional rack cabinet. Its lightweight aluminum cover and energy-saving power sleep mode make it a reliable, professional solution for modern classrooms and hybrid learning setups.

Features

Features

  • 50W digital hybrid Class D amplifier, 25W per channel
  • Dual infrared wireless microphone receivers
  • Three audio line inputs, mixed with microphone inputs
  • Two line-level outputs for assistive listening and lesson capture
  • Rear panel output with gain control (3.5 mm)
  • Hybrid learning compatible with front-panel computer connection
  • Digital Feedback Guard to prevent audio feedback
  • Switchable computer anti-hum circuit
  • 3-band digital equalizer ±10 dB for precise audio control
  • Teacher priority button attenuates all line inputs instantly
  • Drop-in USB microphone charging (5VDC)
  • Supports up to three ceiling sensors for large classrooms
  • Optional WC-400 wall-mount cabinet, rack, or shelf/wall mounting kits
  • Lightweight aluminum cover and energy-saving power sleep mode
  • Ideal for classrooms, hybrid learning, and multimedia teaching
Specification
Amplifier Output Power50W RMS, 2 x 25W channels
Receiver InputInfrared FM, 2 wireless mic channels
ModulationWide-band FM
Reception FrequenciesCh. A: 2.08 MHz, Ch. B: 2.54 MHz
Deviation10 kHz nominal, 25 kHz maximum
De-emphasis50 μs
Tone Key32.768 kHz
Infrared Wavelength850 nm
External Sensor Input2 RCA, powered ports, up to 3 sensors supported
Connectivity Coverage1,600 sq ft per sensor
Total Harmonic Distortion<1% @1 kHz
Frequency Response40 Hz - 18 kHz ±3 dB
Line Level InputsDVD RCA 0 dB, Computer 3.5 mm -10 dB, Aux 3.5 mm -10 dB
Equalization3-band ±10 dB
Speaker Connection4-pin Phoenix connectors, 4Ω min impedance
Dimensions (H x W x D)1.75" (44.45 mm) x 8.5" (215.9 mm) x 7.5" (190.5 mm)
Weight1.7 lbs (0.77 kg)
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