Seas System Designs are developed to give everyone the possibility to listen to our drivers in a complete loudspeaker system. In addition to a detailed description of complete systems, we also present crossovers and sketches to boost your own design ideas. Besides using well-known designers like Joseph d’Appolito and Murray Zeligman, our Seas R&D team spends hours listening - not only to our products, but to finished systems they design themselves. All of this experience and knowledge we are pleased to share with you through this section of the website.

As a part of our quest for a breathtaking sound, we have cooperated with Siegfried Linkwitz for several years. His designs are unique and challenge our ideas about what a speaker should look like in order to reproduce sounds naturally in a room. The resulting designs can be found at

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Title Created Date
SEAS LUCID 20 December 2023
SEAS APHEL 20 December 2023
SEAS LOCUS 16 November 2023
SEAS JOLLITY 16 November 2023
SEAS ACUITY 16 November 2023
SEAS JOY 15 November 2023
SEAS KingRO4Y Mk III 03 July 2020
SEAS Loki MkIII 01 July 2016
BRAGI 06 November 2015
SEAS KingRO4Y Mk II 13 June 2014
SEAS A26 Kit 25 February 2014
DELLING 11 October 2013
BIFROST 11 October 2013
FROY MK3 11 October 2013
TRYM 11 October 2013
ODIN MK3 11 October 2013
THOR 11 October 2013
MIMIR 11 October 2013
IDUNN 11 October 2013


DIY Kits

  • IDUNN +

    Download Idunn plans Download DSP file for Hypex AS2.100 Named Read More
  • MIMIR +

    Download Mimir plans Named after Mimir , a primal god of Read More
  • THOR +

    THOR is the top-of-the-line loudspeakerkit from SEAS. It is a Read More
  • ODIN MK3 +

      The Odin Mk3 is a completely redesigned version of Read More
  • TRYM +

      The Trym is a 2 way, 2 driver loudspeaker Read More
  • FROY MK3 +

      The FROY Mk3 is a new and improved version Read More

    Download Bifrost PDF Download Cabinet Drawings Download Cabinet Parts Bifrost Read More

    Download Delling cabinet drawings Download Delling cabinet parts list Download Read More
  • SEAS A26 Kit +

    Download SEAS A26 plans Download SEAS A26 Application Note The Read More
  • SEAS KingRO4Y Mk II +

    Download SEAS KingRO4Y plans Download SEAS KingRO4Y Application Note Download Read More
  • BRAGI +

    Download Bragi plansDownload Bragi Application Note Named after Bragi, the Read More
  • SEAS Loki MkIII +

     Download Loki MkIII plans  Download Loki MkIII Application Note  Download Read More
  • SEAS KingRO4Y Mk III +

    Download SEAS KingRO4Y plans Download SEAS KingRO4Y Application Note & Assembly Read More
  • SEAS JOY +

    Download SEAS JOY Application Note and plan The SEAS Joy speaker Read More

    Download SEAS Locus note and plan A High Performance loudspeaker featuring Read More

    Download SEAS Jollity note and plan A coaxial driver for compact Read More

    Download SEAS ACUITY note and plan A High Performance loudspeaker system Read More

    Download SEAS LUCID note and plan Download SEAS LUCID files Read More

    Download SEAS Aphel note and plan Download SEAS APHEL files Read More
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