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

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

BBC LL/252-H12 transformers
BBC LL/252-H12 transformers
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
Thread Tools Search this Thread
Old 6th July 2014, 08:12 AM   #1
sharpi31 is online now sharpi31  United Kingdom
diyAudio Member
Join Date: Oct 2005
BBC LL/252-H12 transformers
Default BBC LL/252-H12 transformers

I spotted these on EBay UK for what looks like a very good price. There are still plenty left. The transformers have 150+150:600:37.5 windings and are specified as +/-0.1dB 40-15000Hz at +20dB when terminated correctly. Apparently each one weighs approx 500g.



Given the price I thought I'd grab a few. Looks like it could be a nice 600:600 output transformer for a preamp or Vout DAC, and possibly a good matching transformer to couple low impedance headphones to a high output impedance amplifier (using the 37.5ohm winding for output).

I also wondered if the 37.5ohm winding could be used in some sort of feedback role to linearise the transformer....?

Any experience, thoughts, recommendations would be much appreciated.
  Reply With Quote
Old 6th July 2014, 08:25 AM   #2
sharpi31 is online now sharpi31  United Kingdom
diyAudio Member
Join Date: Oct 2005
BBC LL/252-H12 transformers
I should have said that these are 10.75 + delivery.
  Reply With Quote
Old 6th July 2014, 08:40 AM   #3
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
Zen Mod's Avatar
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
BBC LL/252-H12 transformers
grab them while you can , for that price

every decent house need to have at least 2 pairs of repeater coils ......

my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote


BBC LL/252-H12 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
FS Lundahl LL 1679 output transformers $425 shipped CONUS deicide67 Swap Meet 9 2nd September 2014 07:47 AM
2SJ148 TO-252 PINOUT potepuh Parts 5 7th February 2012 06:31 AM
Nytech 252 Phil50 Solid State 6 7th July 2011 12:20 PM
FS or trade: Lundahl LL-1676 input transformers zigzagflux Swap Meet 2 20th April 2011 12:33 PM
Cerwin Vegas INT 252 berylsizzler Multi-Way 1 6th April 2010 11:12 PM

New To Site? Need Help?

All times are GMT. The time now is 10:50 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio