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Atelier Rullit field coil driver

Hello everyone

 

I'm seriously considering purchasing a field coil driver from Atelier Rullit. 

It appears that Rullit field coil drivers are adaptable through field coil voltage adjustments and that they are not inherently restricted to a certain cabinet. Even though field coils are versatile and flexible I still believe it's paramount to install them in a cabinet accommodates the drivers in the best way possible and a cabinet that suits my room. 

Allow me to introduce my listening environment: I reside in an historic manor apartment where my dedicated listening room measures 25 square meters (5 × 5 m) with ceilings approaching 2,7 m in height. I principally enjoy classical and jazz repertoire, ranging from solo recitals to chamber and full orchestral works. As an amateur pianist, I prioritize a natural sound—one that offers holographic depth, dimensionality, and body—while presenting a rich, organically pure tonal palette. Mr. Rullit’s drivers admirably embody these characteristics with their transient speed and natural timbre. 

 

I have read that following cabinets can be relevant and I have allowed for some personal reflections for each choice:

Front loaded horn

This would be a great idea however it seems that in order to get a good result I would need quite large horns and perhaps too large for my living room. 

Another thing to think of is that I would probably need an augmented bass solution.

Dipole 

A more compact solution that would blend in nicely with my interior however there could be an idea in not putting the exquisite driver in a box. 

Resonant cabinets

I don't have any experience with these cabinets and I would probably need a professional cabinet designer (and a larger budget) to facilitate this solution.

Other horn designs

My naivety allows for rather crazy ideas and I thought freely that I could just combine plans of La Scala (Klipsch) as the bass idea with some of the bone white horns from Le Cleac'h. I don't know why but perhaps you can offer your commentary on this solution. 

If anyone has experience with this or perhaps have some recommendations for cabinet designers etc., I would highly appreciate it.

 

 

 

apollinaire

Showing 4 responses by apollinaire

apollinaire OP
29 posts
 

Hello Jason

 

It is not a moving coil speaker but a field coil. And yes, the technology is quite old but that doesn’t mean anything. In fact I think that field coil based speakers are superior to most systems that are built today. I’d rather have a efficient and a somewhat “full range” system instead of speakers with complex technology and complicated crossovers. 
 

 

apollinaire OP
29 posts
 

The field coil driver I'm considering is among the best drivers to have ever existed. I will keep in mind investing in a proper, valve-based power supply. 

 

I believe that OB need a lot of space around them. I would love to have the Telefunken design but my interior doesn't allow for their placing. 

apollinaire OP
29 posts
 

Dekay

Thanks you for your post. If I went for an independent bass solution I would need two amplifiers, right? That makes it a bit complicated I would say and too complicated for my taste.

Larryi

Thanks you for your post. I have already learned that investing in a proper, high quality power supply is an absolute must.

I already own a pair of entry level Audio Note speakers (D/J) and I would love to have their field coil models, however they start at 65.000$ which is too much for my budget. The field coil driver I'm looking at is around 5000€ and a cabinet can probably made for less. 

It's funny with Treehaus. It seems they are doing everything right: the driver, the cables, the setup. Even their amplifiers run with the outstanding Finemet output transformers and I have a feeling there is mixed feelings about it. I have thought about buying a pair though even though I would prefer a cabinet that doesn't require 1m+ from the wall.

I thought on a closed cabinet but with empty back like resonant cabinets. 

 

apollinaire OP
29 posts
 

Thank you for all the kind recommendations, although I might accentuate that I'm looking for a suitable cabinet idea for the Rullit field coil driver.

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