EL84 Amp - Baby Huey - Page 22 - 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 10th November 2006, 12:35 AM   #211
diyAudio Member
 
LowRedMoon's Avatar
 
Join Date: Jan 2006
Location: Upstate New York
Thanks, Ian.

What has been your verdict on the bypass cap configuration?
  Reply With Quote
Old 10th November 2006, 02:29 AM   #212
diyAudio Member
 
Join Date: Oct 2004
Location: Adelaide South Oz
Adam,
See earlier post. I'm using a single 1000uF/25V Blackgate NX across each EL84 Cathode current source. This is the best I've been able to come up with.
Cheers,
Ian
  Reply With Quote
Old 10th November 2006, 07:33 AM   #213
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by LowRedMoon
As preamps go, I think the Bottlehead (Extended) Foreplay would be a good bet for around $400, but I don't like the fact that I'm not forced to learn things in order to build it - the amp is already planned and laid out. That idea really turns me off. I've always been one for steep learning curves and the associated satisfaction that follows earned success. Yeah. I have problems.
Have a look at the 12B4 preamp threads.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 11th November 2006, 03:55 PM   #214
diyAudio Member
 
LowRedMoon's Avatar
 
Join Date: Jan 2006
Location: Upstate New York
I've been sourcing power transformers for mono versions of this amp.
Here's what I've found to be adequate. Please tell me if there are any known disadvantages to using smaller transformers instead of one large one.

Plate and heaters:

Hammond 261G6 250V CT @ 130ma, 6.3V @ 2A

CCS 5V:

Hammond 167M5 5V CT @ 3A (higher current ratings available) ...and I honestly don't know what to do with the centre tap.
  Reply With Quote
Old 11th November 2006, 04:04 PM   #215
diyAudio Member
 
LowRedMoon's Avatar
 
Join Date: Jan 2006
Location: Upstate New York
Quote:
Originally posted by planet10


Have a look at the 12B4 preamp threads.

dave
Thanks, Dave. I'll check it out. Would it be this thread you are refering to?
Yet another 12B4 line stage...
  Reply With Quote
Old 12th November 2006, 06:32 AM   #216
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
That is one of them... it will have the info you need.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 7th December 2006, 08:03 AM   #217
Luke is offline Luke  New Zealand
diyAudio Member
 
Join Date: Sep 2001
Location: Wellington NZ
Send a message via AIM to Luke
hi Gingertube,

I have made a world audio kit kel34 and it sucked. Anyway, Ive never heard another valve amp so I want to build good one to decide if I like valve amps or not.
Thing is I cant find any where in NZ or Aussie where I can find good quality transformers. Do you have any suggestions where I can find good transformers?
  Reply With Quote
Old 7th December 2006, 09:38 AM   #218
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
 
EC8010's Avatar
 
Join Date: Jan 2003
Location: Near London. UK
Quote:
Originally posted by Luke
I have made a world audio kit kel34 and it sucked.
I've never seen one in the flesh, but that's odd since it's a derivative of the classic Mullard 5-20. Are you certain everything is correct? Are the DC voltages as specified?
__________________
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  Reply With Quote
Old 7th December 2006, 09:50 AM   #219
Luke is offline Luke  New Zealand
diyAudio Member
 
Join Date: Sep 2001
Location: Wellington NZ
Send a message via AIM to Luke
yes everything was correct, it really was mediocre.
  Reply With Quote
Old 7th December 2006, 10:00 AM   #220
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
 
EC8010's Avatar
 
Join Date: Jan 2003
Location: Near London. UK
That's a shame. Treat it as a test bed for other circuits?
__________________
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  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
Red Light District/Baby Huey (EL84 P-P) Output Iron dsavitsk Tubes / Valves 3 14th February 2009 02:21 AM


New To Site? Need Help?

All times are GMT. The time now is 03:17 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