I want these 12" field coil on ebay - Page 6 - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th June 2010, 02:29 AM   #51
shooter is offline shooter  United States
diyAudio Member
 
Join Date: Aug 2003
Location: usa
Default no pictures

Quote:
Originally Posted by haralanov View Post
Would you post some pictures? What kind of power supply feeds them?
Thanks in advance.
Right now simple solid state supply with variac to find the sweet spot, will change to tube supply eventually, also front loaded horns being built for these drivers to replace the open baffle.
  Reply With Quote
Old 11th June 2010, 03:11 AM   #52
diyAudio Member
 
Join Date: Jan 2007
Wow, I'd love to hear about the front-loaded horns.
  Reply With Quote
Old 11th June 2010, 03:35 AM   #53
shooter is offline shooter  United States
diyAudio Member
 
Join Date: Aug 2003
Location: usa
The front horns are Oleg Rullit's propriety design, you can see photos of the horns here.
12" field coil pictures from woodworking photos on webshots
  Reply With Quote
Old 5th March 2011, 05:49 AM   #54
jlsem is offline jlsem  United States
diyAudio Member
 
jlsem's Avatar
 
Join Date: Jun 2003
Location: Dallas,TX
Some pictures of the horns for the Rullit drivers:

Click the image to open in full size.

In the shop before drivers were installed.

Click the image to open in full size.

John
  Reply With Quote
Old 8th March 2011, 07:46 PM   #55
diyAudio Member
 
Atelier Rullit's Avatar
 
Join Date: Mar 2009
Hello,

recently I happened to come across this thread on your forum, and I'm very happy to see that the great project of the friend of jlsem's who was lucky, then, to purchase these unique speakers for comparably little money in my eBay auction, is currently being carried on.

Having supplied the plans and instructions, and running an alike front loaded horn in my atelier, I do know what the result will be like. There's nothing comparable to these devices.

@jlsem: Do you know whether the speakers have already been monted? I sent an email to Ka some days ago, but I haven't received an answer so far. I'm keen on getting to know everything about the course of his project. What kinds of amps is he running, what's the signal source? I'm asking because this isn't just a so-called "hifi system", but, if everything has been worked out right, a real time machine that takes you on a journey to the very place and the very time the music was recorded - be it Belafonte in Carnegie Hall, Glenn Gould in Salzburg, or whoever whenever.

One of the forum's members named me a "serious maniac", also using the word "vocation" - he might be right. For quite a lot of years I have been deeply involved in this matter, mainly re-animating old German speaker-"Baukunst" - art of construction, so to speak - and doing research for my own developments.

I suppose there are more members who'd like to know more about my philosophy, my work and my creations. From now on, I will be present in diyAudio twice a week to answer your questions, to share new projects with you, etc.

Kind regards,
Oleg Rullit
  Reply With Quote
Old 8th March 2011, 09:19 PM   #56
dcathro is offline dcathro  Australia
diyAudio Member
 
Join Date: Mar 2007
Hi Oleg,

Great to see you here!

I have to say that I have admired your work from affar. Your drivers are incredible works of art. It is wonderful to see in our modern disposable world. It will be good to understand some of your philosophy on what makes a great driver, as well as your general audio experience.

Best Regards

David
  Reply With Quote
Old 8th March 2011, 09:39 PM   #57
jlsem is offline jlsem  United States
diyAudio Member
 
jlsem's Avatar
 
Join Date: Jun 2003
Location: Dallas,TX
Oleg,

The speakers are mounted and are in fact outstanding. The amps are Arthur Loesch designed - single-ended currently using 801A on the output but can be configured for type 50 as well as 300B. The output transformers are Tango NY-series Permalloy core.

The whole system defies every negative myth applied to the single-ended amp/single-driver method.

John
  Reply With Quote
Old 9th March 2011, 09:42 AM   #58
diyAudio Member
 
Atelier Rullit's Avatar
 
Join Date: Mar 2009
Hello David and John,

many thanks for your quick feedback. I'm on the move today, but I will be back tomorrow for a more elaborate answer.

I'm up to be in the forum every Monday and Thursday.

Kind regards,
Oleg
  Reply With Quote
Old 14th March 2011, 10:47 PM   #59
shooter is offline shooter  United States
diyAudio Member
 
Join Date: Aug 2003
Location: usa
These are the most realistic speakers I have heard and owned, the massive horn allow every detail and nuance come through, the breath of the singer, the decay of the note of an instrument is uncanny, I am done with searching for speakers, the wood work by master furniture maker jlsem is exquisite.
Attached Images
File Type: jpg Rullit FH12.jpg (173.9 KB, 846 views)
  Reply With Quote
Old 15th March 2011, 12:07 AM   #60
dcathro is offline dcathro  Australia
diyAudio Member
 
Join Date: Mar 2007
Quote:
Originally Posted by shooter View Post
These are the most realistic speakers I have heard and owned, the massive horn allow every detail and nuance come through, the breath of the singer, the decay of the note of an instrument is uncanny, I am done with searching for speakers, the wood work by master furniture maker jlsem is exquisite.
Hey Shooter,

They look Gorgeous!

What is the system driving them?

Cheers

David
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New 15" Field Coil Speaker deadlyvj Full Range 2 6th June 2008 03:40 AM
Sensitivity of Jensen A-12 field coil speakers korneluk Full Range 1 24th March 2008 06:05 PM
fabricating a cabinet for my 12" dual voice coil sub therich Subwoofers 3 2nd December 2007 12:39 AM
High efficiency Field coil 10" midranges, Australia tech.knockout Swap Meet 3 12th April 2006 07:28 AM
Custom 15" Field Coil Woofers *Look* Magnetar Swap Meet 10 6th July 2005 07:12 PM


New To Site? Need Help?

All times are GMT. The time now is 06:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2