Appropriate Iron for 211 Triode SE - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 31st October 2007, 04:13 AM   #1
diyAudio Member
 
wrenchone's Avatar
 
Join Date: Feb 2004
Location: Silicon Valley
Default Appropriate Iron for 211 Triode SE

I'm thinking of doing a 211 SE amp sometime down the way, and would like recommendations on some good iron that won't break the bank. Plate voltage reccomendations wouldn't hurt, either. I was thinking of about 900V.
  Reply With Quote
Old 31st October 2007, 05:09 AM   #2
diyAudio Member
 
Join Date: Jul 2004
Location: Hong Kong
will U care I share my experience.

thx
thomas
  Reply With Quote
Old 31st October 2007, 05:30 AM   #3
diyAudio Member
 
wrenchone's Avatar
 
Join Date: Feb 2004
Location: Silicon Valley
Well, go ahead...
  Reply With Quote
Old 31st October 2007, 08:13 AM   #4
Tweeker is offline Tweeker  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Cincinnati, Ohio


1000VCT 6.3V 400VA Toroidal Power Tube Amp Transformer
, with a 10H+ 300ma+ (if stereo) choke input should give a supply in the range your looking for with SS or hybrid bridge rectification.

A few 80 MFD 500 VAC 50/60 hz Eyuda International Oil Filled Motor Run Capacitors for B+.

A separate, likely DC, filament supply will be needed.


Budget OPTs for amps of this sort are another can of worms entirely.
__________________
Be sure your foil hat has a good low impedance ground.
  Reply With Quote
Old 31st October 2007, 04:03 PM   #5
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Probably no such thing as a budget opt for this project, but talk to Jack Elliano over at Electra-Print about it. His prices are extremely reasonable compared to most of the crowd, and his transformers work very well. (I'm a satisfied customer, the custom ones he made for my 500mW headphone amplifier are very, very, good indeed.)

Heyboer might be another possibility.

In this case parafeed might be another option to consider as it would simplify the HV power supply filtering requirements. Removing the dc from the core in high impedance applications usually results in a transformer with better overall performance at the frequency extremes.
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 31st October 2007, 08:15 PM   #6
diyAudio Member
 
soulmerchant's Avatar
 
Join Date: Sep 2006
Location: in the air
It will be BIG and HEAVY. They don't call amps like this boat anchors for nothing... Not really worth doing on the cheap.

There are some 10k SE chinese opt's on fleabay that are really cheap. No idea if they even have an air gap...
  Reply With Quote
Old 1st November 2007, 06:04 AM   #7
diyAudio Member
 
wrenchone's Avatar
 
Join Date: Feb 2004
Location: Silicon Valley
Whai I was after was concrete suggestions on primary impedance , idle current and plate voltage from people who've been there, as well as suggestions for output transformer sources. The power supply will be a switching converter of my own design and construction, so no worries there..
  Reply With Quote
Old 1st November 2007, 07:54 PM   #8
diyAudio Member
 
Join Date: Jul 2004
Location: Hong Kong
hi,

I had this tube amp in my side & recently I broken for it & need to know why its so expensive & after i use over two months I feel it was quite good with Horn speakers. sound was detail & very fast. dynamic.

this is AN Kondo Ongaku push TAD horn speakers.

I also was OEM some OPT for Japan audio company. production some Superadio metal OPT & nano amorphous. I had a question that can I made same level OPT or probably better than it. than I Broken for it & test all seperate data. clone for it & comapre for original performance.


I will one by one post in here for this several month plan.


thx

thomas




Click the image to open in full size.
  Reply With Quote
Old 1st November 2007, 07:56 PM   #9
diyAudio Member
 
Join Date: Jul 2004
Location: Hong Kong
Istep by step open for the tube amp & test data.

thx

thomashttp://i65.photobucket.com/albums/h2...g?t=1193948071
  Reply With Quote
Old 2nd November 2007, 02:08 AM   #10
diyAudio Member
 
tubelab.com's Avatar
 
Join Date: Jul 2005
Location: South Florida
Quote:
Whai I was after was concrete suggestions on primary impedance , idle current and plate voltage from people who've been there,
I built an amp that used either 211's or 845's. It uses 10 K OPT's and operates at 1050 volts. I set the current at around 70 mA when using NOS tubes, but I have cranked the Chinese ones up to 100 to 110mA. They just sound better. The OPT's that I have are no longer available.
__________________
Too much power is almost enough! Turn it up till it explodes - then back up just a little.
  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
Another 3f4 spice triode model: 5718 submini triode wa2ise Tubes / Valves 0 5th September 2008 04:31 AM
42 VAC soldering iron Jan Dupont Parts 2 8th August 2008 03:48 PM
Gun or Iron? mashaffer Tubes / Valves 13 29th December 2007 01:22 PM
PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode percy Tubes / Valves 23 22nd January 2007 12:36 AM
HOT Iron ? Vespasian Tubes / Valves 23 2nd November 2006 12:36 AM


New To Site? Need Help?

All times are GMT. The time now is 03:30 PM.


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