Motional Feedback Loudspeaker Essentials Tech Note

On the occasion of the SB1 introduction, we asked its designer Rob Munnig Schmidt to write a comprehensive tech note about motional feedback. Rob’s series of white papers about loudspeaker technology has become a classic. But it requires a trained mind to fully grasp all ins and outs.  In this new tech note, Rob presentsread more >

April 28th, 2021

Introducing… the SB1!

With pride we introduce to you the successor of our eminent LS1s-DMF motional feedback subwoofer: the SB1. It takes our “Digital Motional Feedback” (DMF) technology to the next level. When we introduced the LS1s-DMF in 2016 we pioneered with true high tech mechatronics in audio. Philips’ motional feedback concept of the 70’s was improved with aread more >

April 27th, 2021

Loudspeaker technique white papers

For those who love to have deep understanding of our unique DMF digital motional feedback subwoofer, we offer no less than six white papers by its designer Rob Munnig Schmidt: about how loudspeakers work; about sources of distortion in loudspeaker driver design; about why to avoid bassreflex designs; about acceleration based motional feedback subwoofers; aboutread more >

June 26th, 2017

DMF Designer Rob Munnig Schmidt

The LS1s-dmf “Digital Motion Feedback” subwoofer was developed in cooperation with Rob Munnig Schmidt, who worked at Philips and ASML and was professor at the Technical University Delft. Rob explains his design motives: “Being lifelong fascinated by precision control of motion systems and sound reproduction I never was happy with the unbalance in audio design betweenread more >

February 4th, 2017