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Design Passive Radiator Print
Dear SEAS friend and customer –

The L26ROY subwoofer was designed using highly sophisticated FE modeling to secure perfect symmetry and virtually eliminate all instability. In these critical areas, the L26ROY outperforms all other subwoofers that we tested so far.
After extensive listening evaluations, however, we realized that even a perfect subwoofer cannot perform at its best without addressing the problems created by mounting a high output subwoofer driver in a small, vented enclosure. What was needed, was a perfectly matched passive radiator. An L26ROY mated to such a passive radiator would make it possible to use a compact cabinet volume of only 40 liters, while avoiding all the troubles associated with using a vented port. No more chuffing noise or unwanted resonances!
Introducing the new SL26R Passive Radiator from SEAS:
The SL26R is a perfect acoustic and cosmetic match to our L26ROY subwoofer. It uses the same basket and cone assembly, and is supplied with the exact moving mass necessary to perfectly load the L26ROY in a 40 liter enclosure.
The SL26R is:
•    A perfect acoustic and cosmetic match to the L26ROY subwoofer
•    Designed to achieve a 26Hz Helmholz resonance in a 40 liter enclosure using a single passive radiator
•    Tunable by adding or removing mass
•    Usable in pairs to achieve even higher acoustic output.
•    The best solution for eliminating port chuffing, resonances and mid frequency leakage
•    In applications where extreme SPL is needed, two SL26R passive radiatiors can be used with a single L26ROY. In this case, the addition of 200 grams extra mass to each passive radiator will achieve a tuning at 26Hz in a 40 liter cabinet.
•    For further technical details, please refer to the data sheet.
•    The SL26R is now available for all our distributors. Please contact your factory representative or me directly on This e-mail address is being protected from spambots. You need JavaScript enabled to view it for further details

We are looking forward to hearing from you.

Spring 2010 Print

Dear SEAS customer -

At SEAS, we are delighted to be back at work after Easter, because, like we mentioned earlier, we have so many exiting news to bring forward this Spring.

Please keep stopping by - in just a few days, we will launch the long awaited passive radiator in the Design product group. The SL26R is designed to be utilised in a 40 litres box together with the L26ROY .  We will revert with a closer description and product design philosophy, but can already promise amazing results.

DIY- customers in the UK - please contact any of the distributors from our distributor's list. Arena Electronics is temporarily not representing SEAS in the United Kingdom.


We will solve the mystery of the breathtaking sound experience.

Easter Holiday Print

Dear SEAS customers and friends,

Please be informed that the SEAS factory will be closed for Easter holidays from Friday March 26 until Tuesday April 06.

Queries may be directed to our SEAS email account This e-mail address is being protected from spambots. You need JavaScript enabled to view it or sent to our fax machine: +47 6923 3001. We will attend to your messages as soon as possible

We are already looking forward to return Tuesday 06 April, because this Spring we have planned a lot of exiting news for you.

We are especially proud of the new offering in our Design product group. Soon, we will launch a passive radiator which has been designed to match the L26ROY perfecty. We will also have a kit suggestion which is equipped with these excellent drivers.

We will also publish suggestions for kits which utilize the Exotic drivers, so there are really lots of things to look forward to over the next few months. We wish each and every one of you a happy easter.


New distributor in Finland Print

Dear SEAS customer -

We are pleased to introduce our new distributor for the Finnish market place.

We welcome Hifitalo from Salo, Finland - who will promote and distribute both SEAS Excel, Prestige and Design Lines, as well as SEAS Lotus.

Hifitalo and SEAS know each other very well, and have had a good business relationship for many years.

You can easily find them on web:

Phone: 00358 440553595



New R&D Manager Print

New R&D Manager at SEAS

SEAS of Norway announces Håvard Sollien as new R&D Manager

Dear SEAS Customers and Associates

As of January 1st, I have assumed the position of Manager at the SEAS R&D laboratory, succeeding Mr Olav Arntzen who has advanced to the position as Managing Director of SEAS. I’ve been a part of the SEAS R&D team since August 2007, and have for the last year also been managing the R&D projects.

I have a Master in Acoustics from the Norwegian University of Science and Technology. My Master Thesis focused on a novel approach of measuring the small-signal parameters of loudspeakers. Other research interests is room-acoustics and perception of sound.

I look forward to all the new and exiting development projects and drivers and to continue our research in solving the mystery of the breathtaking sound experience.

Kind regards,
Håvard Sollien
R&D Manager
SEAS Fabrikker AS

Idunn Kit Print

We wish you all a very happy new year!


We are back from our Christmas Holidays, which here in the Moss region has been very cold this year.


We are most pleased to present to you all our new Prestige Kit, Idunn , which utilises the new curv cone woofer U18RNX/P and DXT tweeter 27TBCD/GB-DXT.


Idunn is based on a standard 20 l vented cabinet, chosen to give people an easy start to build  their own loudspeaker.

Named after the Norse goddess of Youth, we believe this kit reflects  our goal well – and the goal is to create more interest around speaker kits and High End Sound by making DIY available, easy and cost effective.


We will solve the mystery of the breathtaking sound experience.


Christmas 2009 Print


SEAS is now closed for Christmas holidays, and will reopen on 04 January.

Urgent messages may be left on our fax machine +47 6923 3001 or sent to our mail account This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Please note that or Managing Director, Mr. Olav Mellum Arntzen, OEM Sales manager, Mr. Jon Paulsen and US Sales Manager Mr. John Stone will all be visiting CES from 08 January to  10 January. You are welcome to book meetings with them on This e-mail address is being protected from spambots. You need JavaScript enabled to view it


We wish you all very Merry Christmas and a Happy New year - and want to thank you all for good cooperation and exiting challenges in the year that has passed.


We will solve the mystery of the breathtaking sound mystery.




New Prestige Woofer Print

U18RNX/P – A Dedication to The Art of Sound Perfection
We are proud to present our latest ground breaking bass driver, U18RNX/P An 18cm high-fidelity woofer/midrange unit. This is our second driver that uses the Curv cone, following the smaller U16RCY/P. The Curv cone is made from a self-reinforced woven polypropylene material, not to be confused with standard polypropylene. U18RNX/P also utilises the SEAS Spider Ring® technology, keeping the critical components aligned and consistent.

This woven polypropylene combines the great stiffness from a fibre reinforced cone with the high damping properties of the polypropylene. The self reinforcing construction of the material means that the cone can be kept lightweight, without losing stiffness or damping. Combining these properties we have achieved a bass unit which delivers outstanding deep and clean bass notes and the dynamics of a snare drum, while at the same time playing vocals from your favourite singer with the highest fidelity.

The extended range and smooth roll-off of the driver makes it easy to marry with any tweeter, using only a simple filter with a minimum of components. Ensuring that all the dynamics and fine details of the music reaches the musical nerve of the listener, one step closer to musical nirvana.

Samples are available ex stock. Please contact Grethe on This e-mail address is being protected from spambots. You need JavaScript enabled to view it for possible sample deliveries and prices.

 In the near future we will also launch a kit utilising this unit together with our highly appreciated DXT-tweeter. Stay tuned!



Change of Season Print

Dear SEAS friends -

Here in Moss, Norway it is now getting colder and darker as Winter approaches. In such times it is with even bigger pride and joy we can inform all of you that we have appointed a new distributor for New Zealand and Australia. Home Audio Solutions will from now be our representatve in these markets. Mr. Cameron Lett of HAS Audio is well prepared with an established import business and online shop. At SEAS, we really look forward to Solving the mysteries of the breath taking sound experiences together with Cameron. 

We wish Home Audio Solutions a warm welcome on board the SEAS team!

 Please keep stopping by our home page - the long awaited U18RNX/P is available any day now.

 We will solve the mystery of the breathtaking sound experience.

Autumn 2009 Print

Welcome to SEAS - the world of High End Loudspeaker drivers.

Autumn has always been a busy season for us, and this year is no exception.  The week commencing 14 September, our Managing Director, Mr. Olav Arntzen,  together with  Mr. Jan Paus will be travelling in the UK, visiting customers.

OEM Sales Manager, Mr. Jon Paulsen, will also be travelling extensively the next couple of months. He will attend Top Audio in Milan, as well as the show in Helsinki, Finland, which takes place from Sept 25 to Sept 27. You are most welcome to contact us on This e-mail address is being protected from spambots. You need JavaScript enabled to view it  if you want to book a meeting with him during either of these events.

In October we will be represented at the Rocky Mountain Show in Denver. Our US Sales Manager, Mr. John Stone, together with Olav, will represent SEAS in cooperation with North American distributor Madisound. Welcome to stop by the room and listen to an all new kit with our Top Of The Line Exotic drivers. You will be amazed! John and Olav will both be available for meetings too, please send your suggestion for a suitable time to This e-mail address is being protected from spambots. You need JavaScript enabled to view it and we will arrange a schedule.

Launch date for our new Prestige woofer with Curv cone is approaching. We aim at sending out samples mid October. Keep stopping by – data sheet and availability will be published soon!

We will solve the mystery of the breathtaking sound experience.

New season Print

Our Summer break is over, and we are back at work, ready to start a new season.

We are most pleased to welcome our  SEAS Lotus distributor in Israel.

SEAS Lotus has been doing really well lately, and we are proud to announce our distributor network is growing, and therefore we wish M.E. Audio in Petach-Tikva, Israel, the very best of luck. 

During this Autumn, we will have many news to present - we are looking forward to launching both new woofers and also a kit suggestion.

Our DESIGN product group will be extended with new products, so keep stopping by our home page to check our exciting world of High End Loudspeakers.


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