Fresh From the Bench: RME Audio DPS-2 Power Supply and LNI-2 DC Filter and Stabilizer

When RME Audio released the DPS-2 Power Supply and LNI-2 DC Filter and Stabilizer, it left many of its faithful customers intrigued. The two new solutions are designed to improve the performance of its ADI-2 series of converters in critical applications. One is a super low noise linear audio power supply with a unique µfilter and sensor technology, and the other is an active DC filter with galvanic isolation. Stuart Yaniger explains how these two new solutions improve what is already outstanding.

Focal is elevating its studio monitors with the introduction of the Utopia Main, a new range designed to take studios to the most demanding levels required by audio professionals with main and midfield options. Leveraging innovations from the company’s ultra high-end speaker range, the new Focal Utopia Main 112, and Utopia Main 212 are professional designs with completely new drivers, exceptional power, and advanced functionality.

Microchip announced a new reference design using its MCP1012 high voltage auxiliary AC-DC controller, demonstrating the ability to remove the independent bias power supply in many applications. The MCP1012 offline auxiliary device enables the system to transfer control of the power and duty cycle to a secondary MCU. The reference design includes a patented isolation technique called Inde-Flux transformer technology being licensed to Würth Elektronik eiSos.

Hal Leonard published the book “Electronics Concepts, Labs, and Projects, Essential Electronics Theory for the Audio World” by Alden Hackmann. This is a complete introduction to essential theory relating to electronics principles specific to the audio world, including practical lessons on basic things from soldering to how to use an oscilloscope and function generator to diagnose circuits.

Researchers Jeong-Yun Sun and Christoph Keplinger at the Harvard School of Engineering and Applied Sciences (SEAS) have demonstrated a new type of loudspeaker transducer, which works on a different principle than the conventional moving coil design. It is made of …