The Contemporary Research 232-Amp+ is a compact, programmable mixer/amplifier aimed at integration with flat-panel displays and video projectors. The versatile amp features a stereo line-level display/projector audio input and two mono aux inputs, and outputs stereo sound at 40 watts RMS. The aux inputs mix levels with the stereo input, and can be set to mute or lower other inputs when active, ideal for wireless mics and paging applications. The Class D amplifier is highly energy-efficient, using 90% of DC power for amplification, operating with very little heat, and con
The Contemporary Research 232-Amp+ is a compact, programmable mixer/amplifier designed for integration with flat-panel displays and video projectors. It features a stereo line-level input and two mono aux inputs, outputting stereo sound at 40 watts RMS. The unit includes full RS-232 control and status reporting, allowing integration with custom control systems, and supports field adjustment via onboard switches and a level potentiometer.
The document details the RS-232 control protocol, including command structures, specific control commands for volume and gain, and terminal communication commands. It also provides instructions for field setup using DIP switches, mix/ducking operation parameters, and physical installation options such as surface mounting or rack mounting.
| Output Power @ 8 ohms | 32W RMS (16W per channel) |
|---|---|
| Output Power @ 4 ohms | 40W RMS (20W per channel) |
| Input Impedance (Stereo) | 7.5K ohms |
| Input Impedance (Mono) | 7.5K ohms |
| Gain Range | 20 dB to 36 dB |
| Power Supply Input | 11.5 to 19 VDC |
| Max Power Input Current | 3 A |
| THD + Noise | 0.25% typical |
| Frequency Response | +/-1 dB, 20 Hz to 20 kHz |
The default gain setting is 20 dB.
Yes, it can be rack mounted using the optional RK-3 Rack Mount Kit.
The factory default baud rate is 9600.
The unit has two mono aux inputs.