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

Tubelab Discussion and support of Tubelab products, prototypes and experiments

Thread Tools Search this Thread
Old 19th March 2010, 07:45 PM   #1
smithie is offline smithie  United Kingdom
diyAudio Member
Join Date: Jan 2005
Location: cornwall
Default r-core transformers

hi all
im seriously thinking of ordering a board and building a simple single ended amplifier proberly using a kt88 valve.
at present im using a e.a.r 859 type clone circuit which is using the el509 or 519 sweep output valve in a enhanced triode arangement,this amp is using r-core output txs that i cant find any info on other then there ment to be 20watt specs.
ive found this amp ok but the treble doesnt seem that extended and the overall sound seems very dense and thick if that makes sense,hence my intrest in trying out tubelabs sse amp.
im using hawthornes ssi drivers so i have fairly hi-sens speakers so that isnt screwing up the amp,im just wondering what peoples take are on r-cores being used as output txs as ive hardly seen them used on other peoples designs and wondering if these are really not up to the job and causing dissappointment in the sound,ive asked similar question before regarding the r-cores,the replys seem to mention they should be ok,im at a loss why my amp isnt singing to these ears,if they get a thumbs up then maybe i could use them on the tubelab build,trouble is i have no specs for said r-cores!
any views/thoughts would be great.
all the best
  Reply With Quote
Old 24th March 2010, 11:17 PM   #2
andyjayh is offline andyjayh  United Kingdom
diyAudio Member
Join Date: Mar 2010
I would be interested in an answer to this also as I am considering them in my new amp build. Not much info out there yet on these transformers but the attraction of the low noise is high.
Source: ASRock with XBMC, SkyHD, Teac VRDS 10 modified DAC, SB3 Proc/Amps: Proceed AVP2, Musical Fidelity AS100, Rotel RB985 Speakers: Monitor Audio GR20, GR LCR, B&W DS3, REL STIII sub Displays: Pana plasma, Sanyo Z1 proj Misc: Isotek Sub G2 & Elite cables
  Reply With Quote
Old 25th March 2010, 02:35 AM   #3
Tubelab_com is offline Tubelab_com  United States
diyAudio Member
Tubelab_com's Avatar
Join Date: Jul 2005
Location: West Virginia panhandle
I would love to have some information here, but I have never seen or heard an r-core transformer.
Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
  Reply With Quote
Old 25th March 2010, 02:42 AM   #4
Richard Ellis is offline Richard Ellis  Argentina
diyAudio Member
Richard Ellis's Avatar
Join Date: Sep 2006
Location: Mar del Plata, a BIG seasonal getaway city, can see the Ocean from our residence.
Crapola....heard of "R" cores but also haven't seen one nor head of how they're constructed. I say lets cut up some Iron in a letter shape & try to make it into a functional transformer. Who knows what someone could come up with!

______________________________________________Rick .................
  Reply With Quote
Old 25th March 2010, 03:01 AM   #5
smithie is offline smithie  United Kingdom
diyAudio Member
Join Date: Jan 2005
Location: cornwall
the only thing ive found on the r-cores is here
Softone RW-20 Single-Ended Audio Output Transformer.
mine never came from here,mine came with a previous project i brought,although obviously they look the same
all the best
  Reply With Quote


r-core transformersHide 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
C-core transformers edrel sison Tubes / Valves 25 1st October 2015 09:10 AM
R-CORE transformers in Europe tvicol Parts 18 25th July 2014 11:58 AM
R Core Transformers jimmyd53 Parts 50 9th December 2012 08:00 PM
Where to buy R-Core transformers? chris719 Digital Source 6 7th December 2012 06:56 AM
r-core output transformers... smithie Tubes / Valves 10 6th November 2009 02:22 PM

New To Site? Need Help?

All times are GMT. The time now is 09:19 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio