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

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

Photo Gallery
Photo Gallery
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 20th March 2012, 08:23 PM   #3991
mhouston is offline mhouston  Australia
diyAudio Member
 
mhouston's Avatar
 
Join Date: Feb 2006
Location: Victoria, Australia
Default "Luciano" - 807 power amp

I picked up a couple of ceramic based ATS25/807s at a ham swap meet for $7 each. Recently I was given a pair of 807 which appeared in pristine condition. All tubes tested 85%. A volunteer on a another forum designed an Ultra-linear amp for me based on a 6SN7 driver tube a few years back. Finally the amp is finished.

The power and OPTs are Edcor, bases are Australian spotted gum and made by a local fellow amp builder. Tube bases and top caps ceramic, inter-stage caps Russian military. The top and bottom plates are 2mm Al and the colour "Red Delicious". It has a remote PS with currently 5Y3 rec. tube.

Though the power tubes are well used the rest of the components are new so I need 50 hours plus to burn-in. I have swapped the Sovtek for a Shuguang 50 year treasure. The amp appears to produce voice extremely well but I am still matching preamps and tubes to it.
Attached Images
File Type: jpg 807Finished_S.jpg (172.7 KB, 1444 views)
File Type: jpg 807FinishedII_S.jpg (164.9 KB, 1401 views)
  Reply With Quote
Old 20th March 2012, 08:48 PM   #3992
Cassiel is offline Cassiel  Libya
Account disabled at member's request
 
Join Date: Sep 2004
Location: Madrid
OMG. Let me see....we have brown with red which is OK, but then we have the Edcor 'killer' blue and then everything goes down the toilet. My eyes, my eyes!
  Reply With Quote
Old 20th March 2012, 09:48 PM   #3993
mhouston is offline mhouston  Australia
diyAudio Member
 
mhouston's Avatar
 
Join Date: Feb 2006
Location: Victoria, Australia
Quote:
Originally Posted by Cassiel View Post
OMG. Let me see....we have brown with red which is OK, but then we have the Edcor 'killer' blue and then everything goes down the toilet. My eyes, my eyes!
Yes you are right too many colours. It's not like me usually I get the colour balance right. In more subdued light the red looks like a reddy-brown and the Edcors darker blue.
  Reply With Quote
Old 20th March 2012, 10:39 PM   #3994
Wavebourn is offline Wavebourn  United States
Anatoliy Lisovskiy
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Photo Gallery
Look gentlemen what I've found on one Russian website... 2x50W output sourcer.
Attached Images
File Type: jpg 1111.jpg (171.1 KB, 1388 views)
__________________
!!!Warning!!!
Single Ended Class-A-Holism is addictive!!!
  Reply With Quote
Old 20th March 2012, 10:44 PM   #3995
Wavebourn is offline Wavebourn  United States
Anatoliy Lisovskiy
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Photo Gallery
Quote:
Originally Posted by jane View Post
6C33 monoblocs.
6SL7 input, 6V6 driver and 6C33 power tube.
Hammond mains transformers, Sowter plate choke and Edcor OPT.

Photo Gallery



Schematic:
An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.


JanE

Nice amp, and great schematic!

May I borrow your bootstrap idea?
__________________
!!!Warning!!!
Single Ended Class-A-Holism is addictive!!!

Last edited by Wavebourn; 20th March 2012 at 10:46 PM.
  Reply With Quote
Old 21st March 2012, 04:25 PM   #3996
robaroni is offline robaroni  United States
diyAudio Member
 
Join Date: Dec 2010
Location: Catskills
Default Merlyn

Look for Merlyn in the May 2012 issue of aX.
Attached Images
File Type: jpg Photo 5.JPG (660.8 KB, 665 views)
  Reply With Quote
Old 23rd March 2012, 02:18 AM   #3997
funny is offline funny  Hong Kong
Banned
 
Join Date: Mar 2012
Default Psvane amp

Quote:
Originally Posted by cadman View Post
Here ya go guys, a place to share pictures and a brief explanation of your favorite amp or latest project. For discussion or an in-depth writeup, let's post at the Discussion Thread. Hope this will suffice- Who's gonna start things off? (again)
Top valve in China
PSVANE: 300B-T X 2
Shuguang Treasure:6CA7-Z X 2
PSVANE: 12AX7-T X 2
Shuguang:5Z3PA 2
Attached Images
File Type: jpg S300I MK-1.jpg (124.4 KB, 607 views)
File Type: jpg S300I MK-2.jpg (65.8 KB, 441 views)
File Type: jpg S300I MK-3.jpg (79.0 KB, 399 views)
  Reply With Quote
Old 23rd March 2012, 05:07 AM   #3998
mhouston is offline mhouston  Australia
diyAudio Member
 
mhouston's Avatar
 
Join Date: Feb 2006
Location: Victoria, Australia
Quote:
Originally Posted by funny View Post
Top valve in China
PSVANE: 300B-T X 2
Shuguang Treasure:6CA7-Z X 2
PSVANE: 12AX7-T X 2
Shuguang:5Z3PA 2
I have not tried these but are currently using TJ Full Music 300B SE carbon plate limited edition and 6SN7 50 Year treasure. I also have a a pair of Shuguang 300B-Z- very nice but in my Silver Dragon amp the TJs sound the best.
  Reply With Quote
Old 23rd March 2012, 06:46 AM   #3999
Wavebourn is offline Wavebourn  United States
Anatoliy Lisovskiy
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Photo Gallery
That 300B looks very similar to Chinese wases my parents bought in 1950'th, made from thin aluminium alloy, painted by gold on top of shiny black laquer. Nice.
__________________
!!!Warning!!!
Single Ended Class-A-Holism is addictive!!!
  Reply With Quote
Old 23rd March 2012, 11:39 AM   #4000
mhouston is offline mhouston  Australia
diyAudio Member
 
mhouston's Avatar
 
Join Date: Feb 2006
Location: Victoria, Australia
Quote:
Originally Posted by funny View Post
Top valve in China
PSVANE: 300B-T X 2
Shuguang Treasure:6CA7-Z X 2
PSVANE: 12AX7-T X 2
Shuguang:5Z3PA 2
Tubes will be the death of me. Psvane.
  Reply With Quote

Reply


Photo GalleryHide 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


New To Site? Need Help?

All times are GMT. The time now is 07:11 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki