LEM Commercial D-Drive 1.8k4-ae
Estimated delivery in Italy between 30 October and 3 November
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FEATURES
D-Drive 1.8k4-ae is the new compact 19” 1U rack-mount amplifier from LEM Commercial, designed to offer high performance, advanced management, and maximum reliability in modern fixed installations. It is the first model in a new generation of power amplifiers with integrated DSP, characterized by a web-based control platform that allows for configuration and monitoring from any browser, without the need for dedicated software.
The heart of the D-Drive 1.8k4-ae is a high-performance DSP based on a 1 GHz ADI Sharc 21569 platform, capable of managing a full 4 x 4 matrix and a set of extremely advanced processing functions. The processing includes 96 kHz FIR filters, parametric and dynamic equalizations, compressors, expanders, and delays of up to 2000 ms per channel, with the ability to use dedicated presets for both the device and the speakers.
The power section utilizes proprietary Class-D technology with independent converters, designed to provide low noise floor, a linear frequency response from 20 Hz to 20 kHz, and a power output of 4 x 300 W at 8 ohms, 4 x 450 W at 4 ohms, or 2 x 900 W in bridge mode. The D-Drive 1.8k4-ae supports both low-impedance (4 / 8 ohm) operation and 70/100 V constant voltage output in bridged mode. In the latter case, the user can set the total load value with an accuracy of 0.1 ohm within the 8 – 125 ohm range, while the amplifier automatically adjusts the power delivered to ensure operational safety and full compatibility with conferencing, commercial sound, and PA systems.
Control is managed via Webcon, an integrated web interface that offers simultaneous multi-user access, compatibility with any browser on PCs, tablets, and smartphones, and a unified workflow for managing multiple devices. The platform allows for real-time monitoring, level management, muting, device identification, configuration of GPIOs, IP wall panels, and the use of open APIs for integration with third-party systems.
In terms of connectivity, the D-Drive 1.8k4-ae features analog, AES/EBU, and AES67 inputs, ensuring high flexibility for integration into networked audio systems. The outputs are available on Euroblock and speakON NL4 connectors, while the front panel houses a modern-looking touchscreen display, optimized for 1U rack integration.
The cooling system uses a configurable, temperature-controlled fan that ensures consistent performance even under demanding conditions. The 90 – 264 VAC universal voltage power supply ensures full compatibility with any electrical grid. System protection is provided by a complete set of intelligent functions: automatic HF signal inhibition, protection against overvoltage, short circuits, overtemperature, and other critical conditions.
From a construction standpoint, it uses audiophile-grade components, including high-quality operational amplifiers, resistors, and capacitors, as well as a German-made driver chip, to ensure clean and natural audio reproduction.
D-Drive 1.8k4-ae therefore represents a new generation of amplifiers—powerful, compact, and designed to integrate naturally into modern professional audio ecosystems. The combination of advanced DSP, high-efficiency amplification, native web control, and network options makes it an ideal choice for installations that require quality, reliability, and centralized management.
User Benefits
- Powerful DSP for sound processing
- Full 4 x 4 matrix
- AES67 inputs, allowing for integration into Audio-over-IP networks
- Webcon control platform (no dedicated control software required)
- Simultaneous multi-user access: allows for real-time, simultaneous control from multiple devices
- Supports 70/100 V voltage output when used in bridged mode
- Built with audiophile-grade electronic components
- Intelligent protection systems
- Compact 1U 19” standard rack format
Areas of use
- PA
- Corporate
- Commercial environments
- Hospitality (hotels, restaurants)
- Conference rooms and multi-zone sound systems
- General fixed installations requiring networked audio
SPECIFICATIONS
- 4 amp channels
- Class-D amplifier technology
- 4 x 300 W @ 8 ohm
- 4 x 450 W@ 4 ohm
- BTW: 2 x 900 W @ 8 ohm
- Min. load impedance: 4 ohm per channel, 8 ohm in bridge mode
- Load parameter configurable within a range of 8.0 to 125.0 ohm with a precision of 0.1 ohm
- Fixed voltage output: 70/100 V (in bridged mode)
- DSP: ADI Sharc 21569 1GHz
- ADC: CS5361
- DAC: PCM4104
- OPA: NE5532
- Sampling rate: 24 bit 96 kHz
- Max input level: 19 dBu (6.904 V)
- Input sensitivity: 26 - 44 dBu
- Frequency response: 20 Hz – 20 kHz (±0.5 dB) @ 1 W to full power, 8 ohm
- THD+N: < 1% @ 1 W to full power
- SNR: 95 dB
- Channel separation: < -78 dB @ 1 kHz, 0 dBu
- Input interface: 4 x Phoenix terminal
- Inputs: analog, AES67, AES, pink noise, white noise, sine wave
- Outputs: 2 × speakON + 8-pin Phoenix terminal
- Control interfaces: Ethernet (TCP/IP), USB, RS485
- Network standard: 100BASE-T, RJ45
- Display: 320 x 240 pixel, IPS color LCD
- Cooling: smart temperature-controlled fan
- DSP matrix: 4 x 4
- Input EQ: 15 bands parametric EQ
- Output EQ: 15 bands parametric EQ
- Crossover: Butterworth / Bessel 6 - 48 dB, Linkwitz-Riley 12 - 48 dB
- Input delay: 4 x 2000 ms
- Output delay: 4 x 2000 ms
- FIR filtering: 4 CH x 2048 taps
- DSP presets: 79 slots
- Configurable GPIO 4IO
- Wide voltage technology: 100 – 240 VAC 50/60 Hz
- Operating temperature: -20 to 60 °C
- Protections: limiter, over-temperature, DC, HF, short-circuit, BEMF, peak current, inrush current, power-on delay, breaker, over/under voltage
- Dimensions: 48.3 x 4.45 x 30.5 cm 19” rack, 1 U
- Weight: 5 kg
Technical characteristics
Couldn't load pickup availability
User Manual
Official technical documentation in PDF format.
About LEM Commercial
LEM Commercial is Generalmusic's line dedicated to professional audio systems for fixed installations. The brand draws on the heritage of LEM, a historic Italian professional audio name established in the late 1960s, adapting it into a range oriented toward sound reinforcement for commercial environments and outdoor applications. The offering includes point-source loudspeakers, column systems, subwoofers, and amplifiers with DSP and digital connectivity, designed to integrate into permanent installations where acoustic performance, resistance to atmospheric agents, and aesthetic care are central elements.
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Shipments
Shipments
We ship throughout Italy and the European Union via selected express courier partners. All orders travel in special reinforced packaging and are covered by 100% included insurance to fully protect the value and integrity of professional equipment during transport.
Returns and refunds
Returns and refunds
You can request a return within 14 days of receiving the order. As these are professional hardware and devices, items must be returned completely intact, unused, unactivated, and sealed in their original packaging, complete with all accessories and manuals.
Frequently Asked Questions
Can't find the answer you're looking for? Our team of specialists is at your disposal for configurations or technical questions.
What are your shipping and delivery times?
What are your shipping and delivery times?
Orders are processed within 24/48 business hours. Delivery is made by insured express courier to guarantee maximum protection and safety even for the most delicate and expensive equipment.
Are the products covered by an official warranty?
Are the products covered by an official warranty?
Yes, all products are 100% original and covered by the official 24-month manufacturer's warranty. In addition, our technical department offers free after-sales support to assist you with the initial setup of your system.
How does the right of withdrawal work?
How does the right of withdrawal work?
If the hardware does not meet your expectations, you can return it within 14 days of receipt. The product must be returned intact, unused, and sealed in its original packaging, complete with all accessories and manuals.
What does it mean if a product is "Available on order"?
What does it mean if a product is "Available on order"?
Some complex professional audio systems or lighting equipment are ordered directly from official distributors based on customer requests. You can proceed with the purchase as normal and our team will immediately inform you of the exact arrival times at our warehouses.