torsdag den 31. december 2009

tirsdag den 22. december 2009

CAST Resistor

Merry Christmas

Sorry, about the lack of updates, this should change soon.

In the mean time, please allow us to wish you all a very Merry Christmas.

We'll be working through Christmas and New Years, untill we go to CES and subsuquently Los Angeles Jan 4th - Jan 17th 2010.

See you there!

onsdag den 25. november 2009

Happy Thanksgiving!

You probably all know the type, the person who always puts it better than yourself...

One such individual is Mr. Chris Sommovigo of The Signal Collection and Stereovox Cables.

In the spirit of Thanksgiving allow me to share with you his words of wisdom, which hit my inbox today:

"As our family heads out to spend the Thanksgiving Holidays with my parents up at their "farm" (in quotes because they don't actually farm anything ...), and in the spirit of this holiday, I wanted to extend my gratitude to you for being a part of our lives.

This industry is a very strange one in that it doesn't really emulate anything else. We're related to one another by an intense passion for music, and for reproducing music in the home to a degree of excellence that most non-audiophile people in the world don't seem to understand. We share an especially high regard for the role that music plays in our life, and we get excited about the oddest things (just try and explain to anyone else how important things like VTA and anti-skating force are). We've got a fairly anonymous list of heroes - just try bringing up names like Edgar Villchur, Saul Marantz, Paul Voight, Julius Futterman, or Peter Walker at the office Christmas Party.

No - I haven't really found another industry quite like ours, and I'm thankful for that. We're an interestingly odd bunch of passionate music lovers who have found something akin to the Fountain of Youth: replenishing our bodies, minds, and souls in the waters of our favorite music playing through our carefully assembled audio systems.

You make it possible for me to enjoy one of the strangest careers in the world, to indulge in my peculiar cable-design talents, and to share the peculiar talents of other designers and engineers with you via our Collection of world-class imported gear.

Thank you for being a part of our lives, and thank you for including us in your life.

Best regards,

Chris Sommovigo


So for all eternity, when people ask us, what our clients mean to us, we will simply go "What Chris said!"

Happy Thanksgiving

Frederik & Magnus
Duelund Coherent Audio

tirsdag den 24. november 2009

Customer feedback

Dear Frederik,

Duelund Coherent Audio’s cast capacitors are superb. They do it all and they do it so amazingly well you’ll wonder why and how you’ve been listening to anything else. I’ve listened to the Mundorf Supreme and the Intertechnik Audyn Cap and that’s just it I listened to them. The Cast Capacitors from Duelund simply disappear, what I hear now are instruments and voices unleashed and untamed, each filled with their own natural beauty and distinct presence.

Humble Homemade Hi-fi has rated the Mundorf’s and the Intertechnik’s at 9 and the Duelunds at 14. I would say it’s more like a 7 for the first two, with a very significant jump to 21 for the Duelund’s. The truth is the Duelund’s are the only ones I’ve heard that are truly getting out of the way of the music, allowing for glorious highs, where notes hang like there being delivered from the heavens.

Outstanding job creating these magnificent works of art.

My gratitude to you all.


Andrew P. Carey

If this doesn't make your day... ;)

fredag den 20. november 2009

Encore les Francais...

We've added more French companies to our growing portfolio of manufactures choosing non plastic components due to the resulting sonic superiority.

Pierre-Etienne Léon

Above, is the man himself with his Maestral loudspeaker, which is currently all the rave in France. The company employs our full line of products.

Also, we are proud to announce that Klinger Favre has been using our components for quite some time.

Many of you will probably be familiar with this system: , Klinger Favre was involved with this.

For more info:

fredag den 13. november 2009

Setup at The Copenhagen audio show

Currently, the absolare+kawero is being setup. Please join us this saturday-sunday at hotel scandic near the planetarium.

tirsdag den 10. november 2009

So how do you know if a manufacturer is an audiophile?

Well, one clue could be to check for a record cleaner in the actual workshop...

Currently cleaned, and in heavy rotation:

Great stuff for the components to listen to whilst in their formative stages. ;)

torsdag den 29. oktober 2009

fredag den 23. oktober 2009

Kaiser Kawero - Sound of the Show

If you will, take a peek at the Stereotimes sound of the show award going to the system in our room at RMAF 2009 featuring the Kaiser Kawero loudspeaker using a Duelund CAST X-over.

Also follow the link at the bottom of the page to read about the amazing trip to Istanbul we made in September. Present companies were: Absolare, Echole, Kaiser, Mundorf and Duelund.

onsdag den 21. oktober 2009

Vandersteen Audio

It is always a distinct pleasure to announce a new collaboration with an esteemed manufacturer of High End audio.

As most of you will recognise, few are more esteemed than Vandersteen Audio. Considering, how driven by technological research and development the Vandersteen product line is, we are very proud indeed to supply our products for their new top of line speaker.

tirsdag den 20. oktober 2009

First blog post from my phone

Not completely sure how this'll turn out. :)

One of our premier dealers is Dansk Audio Teknik.

Above is a picture of their TNT loudspeaker which may be "duelunded" to your heart's content.

For more:

mandag den 19. oktober 2009

If you want to see some pictures of the Peak Consult factory in Denmark, 30 kilometres from the birthplace of the great Danish poet Hans Christian Andersen, please follow the link below .

(There might be some pictures of Duelund products as well...)

When size matters...

People have asked about the look of the made to order square CAST capacitor, we offer. It is for situations when space is at a premium, and will not accomodate the round shape.

As a picture says more than a thousand words:

Comme les Français

I'm quite sure, most of you are regretfully unaware of this excellent French speaker manufacturer:

For quite some time they have been using our CAST line of components in their designs. The results have turned out excellent.

I suggest you check them out, after all, isn't it always when you stray of the given path that true experiences occur?

torsdag den 15. oktober 2009

Hit by a Tidal wave

If you want to see an application for our top of the line silver CAST inductors and capacitors please have a look at this link which contains nice photos of the innards of the Tidal Sunray and the incomparable Tidal T1 loudspeaker system:

mandag den 12. oktober 2009

Pictures from an exhibition. (Audio Fest 2009)

Our contribution to the room, which was setup 2 minutes after gaining access to the room. It's so great to be a parts supplier... :)

From left to right we have: A CAST 630v capacitor, a CAST resistor, normal resistor, some 2.0 silver/silk cabling, our multicap for speaker design handling all values between 0.5-20 µF, a CAST paper in oil inductor, a 75 µF VSF alu capacitor and a 27 µF VSF copper cap.

Setting up the day before the show. Featured in the shot is Kerem Kücükaslan of Absolare/Echole Cables, Norbert Mundorf of Mundorf and Rainer Weber of Kaiser Acoustics.

Fred Manheck, North American dealer of the Kawero! loudspeaker playing the air violin... I guess.

I'm not quite sure, what I'm doing in this shot. It's probably important, though!

As you can clearly see, I'm pointing out the way for the others to follow. As you know, it is the generals who win the war. ;)

Mr. Kücükaslan installing the tubes in the Topline Audio modified Mastersound amplifier. Notice the gloves. The midrange presentation of this amplifier is "to die for".

The Kawero! in all it's reflective glory. How to get such an exquisite surface you might ask?

This is how. Mr. Weber seemed very skilled. As if he might have done the procedure before.

The finished system: Kaiser Kawero! loudspeakers, Echole cabling, Topline Audio Mastersound amplifiers, Absolare preamp, GTE Trinity DAC, Bybee power filter, Weiss Firewire Digital - Digital converter. And a laptop functioning as a music server.

If you look to the left you can see a small sign, which reads This Loudspeaker features premium Duelund components.

This is no idle boast, as the Kawero! is filled to the brim with Duelund CAST capacitors and inductors.

When audio luminaries such as John Curl, Jack Bybee and Clement Perry of are still in your room 3 hours after shutdown, you know the sound is more than acceptable. :)

Stereotimes' review of the room:

For more:

søndag den 11. oktober 2009

Almost needed to lose the T-shirt, setting up at the Audio Fest in Denver will get the pulse going.


More pictures to follow.

fredag den 9. oktober 2009

Back from RMAF 2009

We had a great show. Pictures to follow when I get them.

The room comprising Duelund Coherent Audio, Mundorf, Echole and Kaiser was a great success.
In case you never stumbled upon this article published by Harvey "Gizmo" Rosenberg, authored by Steen Duelund, it is a very interesting read:

Depending on your browser, you may have to copy paste the link.

mandag den 21. september 2009

Part 2 of "How it all began"

Part 1 was published September 17th. So please scroll down in case you missed it.

"What's your story?" Steen demanded... I replied, I had seen his writings on the net and was quickly stopped by the question "How old are you?". "20". Steen found this to be impossible seeing as my voice was much to deep for a 20 year old, which he explained to me in greaaaaat technical detail for a good 45 minutes...

As we (Steen) eventually reached the compromise, that my parents were probably keeping something from me, and I was at least 10 years older than I thought, I got to ask if it was possible to show up for a meeting in the audio society, "Sure! Come by my workshop Thursday at 7 pm".

When Thursday came I convinced a friend to accompany me, telling him they would probably have some High End system there, we could listen to. What eventually transpired turned out to be quite different.

The date was December 13th, and it was freezing. When we got to the address, there was no name on the door just 7 steps down to an entrance to a cellar, with a sign saying OPEN. Inside, the room was pitch dark except for a small line of light coming out from a door slightly ajar placed diagonally to our left.

Opening the door I looked into a basement like room about 40 m2 in size with a ceiling so low I had to slightly bow (I'm 198 cm), the space was filled to the brim with weird machinery old audio apparati, loudspeakers, capacitors, inductors, resistors and drive units from Scan Speak, Peerless, Vifa, Lowther etc. etc. Inside, a rather husky Santa Claus dressed in blue overalls looked directly at me. Stating my name blue Santa Claus remarked he could easily recognise my voice confirming him as Steen Duelund.

End of part 2

Frederik Carøe
Duelund Coherent Audio

lørdag den 19. september 2009

We're currently doing a 74 uF cap, that we will bring to Rocky Mountain in the start of October. Should you go, you get to see it along with quite a special inductor.

See you there!

Best regards,

Frederik Carøe
Duelund Coherent Audio

torsdag den 17. september 2009

How it all began…

Not so long ago in a small country above Germany below Norway and Sweden.

I thought I’d take the opportunity to use my first posts to tell you how everything got started with regards to our small enterprise Duelund Coherent Audio.

11 years ago I had just begun my education at the University of Copenhagen. Since most classes take place in large auditoriums with a professor doing a solo performance with very little actual involvement of the students other than the gratuitous taking of notes, this provided me with ample time to visually eat up the many glittering audio ‘zines I brought with me.

As most of you will recognise reading audio magazines is not a means to an end. Rather, it results in you endlessly roaming High End shops, shows and the home of fellow aficionados for that next upgrade, improvement or even sidestep you could provide your system that day.

Audiophilia Nervosa was flowing through my veins and I was doing my best to feed it.

I will not bore you with details about my system at the time. Suffice it to say, that I had amassed quite a few of the “expensive” usual suspects in my living room, to the mutual chagrin of both my girlfriend (now wife) and my bank.

As is prevalent in life you seek out the ones who are afflicted with the same interests as yourself. My partner in crime is a childhood friend. For ease of writing we’ll call him M in this post. I no longer remember who of us actually introduced the world of audiophilia to the other, but knowing us both we’re probably equally culpable.

Spending a lot of time discussing on various audio boards that were popping up all over the net. One day I stumbled upon a newsgroup called dk.teknik.lyd ( Here, a fiercely argumentative poster called Steen Duelund was doing the rounds. Reading the heated debates, I wasn’t really able to supply much to the discussions, but did learn that Steen was involved with something called the Copenhagen Audio Society, so I wrote him asking if I could simply show up at a meeting. Within 5 minutes he called me…

End of part one

Frederik Carøe


Duelund Coherent Audio

We are live

Welcome to the new blog of Duelund Coherent Audio, hopefully we'll be able to supply you with interesting tidbits about our little part of the world.

Frederik Carøe
Duelund Coherent Audio