Siegfried Linkwitz is a well known reference in the Audio industry. His work range from filtering to speaker building and has been referenced/used by many designers worldwide for the past few years. The Linkwitz Lab website is a goldmine of information on advanced filtering, speaker building and even basic concepts of acoustic and speaker design. A reference website for any audio designer!

It's no news that our platforms have already been used many times to perform filtering and processing of few Linkwitz Lab speaker designs. We are always amazed at the creativity of our members and once again give you kudo for your work! Few weeks ago, Dave Reite certainly took it one step further. By building a complete DSP configuration for the LX521 monitor and submitting it to Mr Linkwitz for review, a new wave of oportunities opened up for the miniDSP community trying to build the LX521. Here is a bit of the story of the LX521 powered by miniDSP with all Kudos to Dave Reite and Siegfrid Linkwitz for giving our platform a good challenge! For more info, please check the DSP challenge here on Linkwitz Lab website.

After more listening by myself and an experienced audio professional I can state that Davey's LX521 DSP prototype is without reservations an excellent alternative to the ASP in a stereo system application.

Siegfried Linkwitz

 LX521-baffles400  LX521 front500
 Baffle LX521 monitor  Finished implementation
System Diagram with nanoDIGI 2x8
System Diagram with nanoDIGI 2x8

Complete prototype by Dave Reite using 1 x nanoDIGI 2x8
Complete prototype by Dave Reite using 1 x nanoDIGI 2x8 + FiiO DACS

miniDSP 4x10Hd on Linkwitz lab set up
miniDSP 4x10 stacked on Linkwitz Lab setup


Parts/software used for construction of the All Digital Setup:

Parts/software used for construction of the Analog + Digital setup

  • miniDSP 4x10 HD
  • miniDSP 4x10 plug-in (programming software)
  • Multichannel amplifier
  • Audio cables (4x, short length)
  • Proprietary LX521.xml file provided by Linkwitz lab on purchase of plans


All credits for building and engineering this nanoDIGI 2x8 solution goes to Dave Reite. All credits for pictures of LX521 monitor, diagrams and other technical aspects of the designs go to Linkwitz Lab.
We'd certainly like to thank both of these gents for their great support to the miniDSP community! :-)


Related Products - miniDSP DSP for LX521 plans