19'' 1U rack power amplifier 4x300W Dante DSP - LEM COMMERCIAL GEN-D-DRIVE 1.8K4-DANTE

LEM Commercial D-Drive 1.8k4-Dante is a compact 19-inch 1U rack-mount power amplifier designed for fixed installations requiring performance, advanced control and reliability. It is the first model in a generation with integrated DSP and a web-based platform that enables configuration and monitoring from any browser without dedicated software.

The DSP uses the ADI Sharc 21569 1 GHz platform and manages a 4 x 4 matrix. Functions include 96 kHz FIR filters, parametric and dynamic equalisation, compressors, expanders and delays up to 2000 ms per channel, together with presets dedicated to the amplifier and loudspeakers. The power section uses proprietary Class-D technology with independent converters, reduced noise, a linear response from 20 Hz to 20 kHz and power ratings of 4 x 300 W into 8 ohm, 4 x 450 W into 4 ohm or 2 x 900 W in bridge mode.

D-Drive 1.8k4-Dante supports low-impedance operation at 4 / 8 ohm and 70/100 V constant-voltage output in bridge mode. For this configuration, total load can be set with 0.1 ohm precision across the 8 – 125 ohm range; the amplifier automatically adapts its power output for operational safety and compatibility with conference, commercial broadcast and PA systems.

Webcon provides simultaneous multi-user access, browser compatibility on PC, tablet and smartphone, and unified management of multiple devices. The platform offers real-time monitoring, level management, mute, device identification, GPIO configuration, IP wall panels and open APIs for third-party systems. Analogue, AES/EBU and Dante inputs support integration into network audio systems. Outputs use Euroblock and speakON NL4 connectors, while the front panel includes a modern touch display for 1U rack mounting.

The configurable thermally controlled fan maintains performance under harsh conditions. The universal 90 – 264 VAC power supply supports any electrical network. Protection functions include automatic HF signal inhibition, overvoltage, short circuit, overtemperature and other critical conditions. Construction uses audiophile-grade components, operational amplifiers, high-quality resistors and capacitors, and a German-made driver chip for clean and natural audio reproduction.