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.
| 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 | |
| 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) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
