Williams AV IMA-121 Matrix Gen 2 50W Amplifier with Dual IR Microphone Receivers

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Williams AV IMA-121 Matrix Gen 2 50W Amplifier with Dual IR Microphone Receivers

Description

Details

Williams AV IMA-121 Matrix Gen 2 Receiver Amplifier

The IMA-121 Matrix Gen 2 amplifier is a versatile multimedia audio solution designed for classrooms and professional AV environments where equipment needs to remain out of sight or secured. It integrates two infrared wireless microphone receivers with independent volume control, allowing clear and reliable voice amplification. The system connects seamlessly with ceiling sensors and speakers, making it an ideal choice for installations that require both performance and discretion.

This powerful unit includes two stereo auxiliary inputs and a dual mono output dedicated to assistive listening systems, ensuring accessibility and flexibility. With a built-in 50-watt Class D amplifier delivering 25 watts per channel, the IMA-121 provides consistent, high-quality sound. Features such as teacher priority, which instantly attenuates other audio sources, and page override with pass-through capability ensure that important announcements are always heard clearly.

For enhanced control and customization, the IMA-121 offers RS-232 wall panel connectivity, bass and treble equalization, and multiple external sensor inputs. Security alert contact closures and flexible paging options further expand its functionality. Designed for reliability and ease of integration, this system is an excellent choice for modern audio installations that demand performance, control, and simplicity.

Features

Features

Dual infrared wireless microphone receivers with volume control
Built-in 50-watt Class D amplifier, 25 watts per channel
Two stereo 3.5 mm auxiliary inputs for multimedia sources
Dual mono 3.5 mm output for assistive listening systems with gain control
Teacher priority function mutes other audio for clear voice delivery
Page override with pass-through for 100V, 70V, and 25V systems
RS-232 wall panel control via RJ-45 connection
Bass and treble equalizer with ±12 dB adjustment
Security alert contact closure with N/O and N/C options
Two external sensor inputs via RCA
Designed for secure, out-of-sight or rack installation
Compatible with ceiling sensors and speaker systems

Specification

Receiver Input	Infrared FM
Modulation	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
De-emphasis	50 μs
Frequency Response	40 Hz, -18 kHz, ± 3 dB
S/N Ratio	>65 dB
THD	<1% @1 kHz
External Sensor Input	Two RCA
Connectivity Coverage	1,600 sq. ft./50 ft line of sight
Line Inputs	Two 3.5 mm Aux with +10 dB gain control
Line Output	Input: 100V, 70V, 25V, 2-pin Phoenix
Output Power	Two digital amplifiers, 25W per channel, 50W total RMS
Dimensions (H x W x D)	1.5" (38.1 mm) x 7.5" (190.5 mm) x 4.25" (107.95 mm)
Weight	1.31 lbs (0.59 kg)

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