Go Back   Home > Forums > > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Elekit News and products from Elekit

Reply
 
Thread Tools Search this Thread
Old 1st April 2020, 01:22 PM   #1
chiaro is offline chiaro
diyAudio Member
 
Join Date: Feb 2020
Default Update for Lundahl OPT for TU-8200

Hello everyone,
I'd like to know if the are any news about the next realization of TU 8200 OPT upgrade from Lundahl??

Some time ago Mr. Per Lundahl said:

"...With the LL2783 (for Elekit TU-8800) we had a new challenge as the amplifier self-oscillated with our first transformer version. In LL2783B and LL2783C we managed to find a different winding structure which eliminated the oscillations. (LL278C is the final version for TU-8800. It sounds very (very) good. I should have stock in late February)

As far as I understand the modified TU-8200 amplifier has a similar topology and behaviour. I expect that the same winding structure could be used for a TU-8200 replacement/upgrade transformer if this would be of interest. "

Thank you
  Reply With Quote
Old 1st April 2020, 03:44 PM   #2
vkung is offline vkung  Canada
diyAudio Member
 
Join Date: May 2005
Location: Vancouver BC Canada
TU-8200's chassis is too small . It is very difficult to prevent the interference from the R-core.

The only option to make the opt similar to the structure of LL2783C.. Unfortunately, the cost to make LL2783C is very costly. The cost will not add up.

So I recommend you to look at TU-8800. IT is a very good amp with LL2783C.
  Reply With Quote
Old 1st April 2020, 04:06 PM   #3
chiaro is offline chiaro
diyAudio Member
 
Join Date: Feb 2020
what a pity !!!!
it would have been nice to think you had a chance to install a good upgrade.....
...but so it is.
Thank you
  Reply With Quote
Old 1st April 2020, 06:12 PM   #4
vkung is offline vkung  Canada
diyAudio Member
 
Join Date: May 2005
Location: Vancouver BC Canada
I tried several times. I am not comfortable to offer the opt with issue..
  Reply With Quote

Reply


Update for Lundahl OPT for TU-8200Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
update for Lundahl OPT for TU-8800 and TU-8200 vkung Elekit 0 30th January 2020 04:52 PM
FS:Lundahl LL2738 mains power filament transformer and Lundahl Cover Abszero Swap Meet 5 3rd October 2016 03:24 AM
Lundahl LL22764 70mA for TU-8200 vkung Elekit 0 20th May 2016 05:26 PM
Lundahl LL2764 with TU-8200 vkung Elekit 0 20th April 2016 04:41 PM


New To Site? Need Help?

All times are GMT. The time now is 12:44 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki