- 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 Power 50W RMS, 2 x 25W channels Receiver Input Infrared FM, 2 wireless mic channels Modulation Wide-band FM Reception Frequencies Ch. A: 2.08 MHz, Ch. B: 2.54 MHz Deviation 10 kHz nominal, 25 kHz maximum De-emphasis 50 μs Tone Key 32.768 kHz Infrared Wavelength 850 nm External Sensor Input 2 RCA, powered ports, up to 3 sensors supported Connectivity Coverage 1,600 sq ft per sensor Total Harmonic Distortion <1% @1 kHz Frequency Response 40 Hz - 18 kHz ±3 dB Line Level Inputs DVD RCA 0 dB, Computer 3.5 mm -10 dB, Aux 3.5 mm -10 dB Equalization 3-band ±10 dB Speaker Connection 4-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) Weight 1.7 lbs (0.77 kg) - Documents
Documents
- Reviews
Write Your Own Review







