Gu50 - 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 11th March 2009, 01:41 PM   #1
diyAudio Member
 
Join Date: Mar 2009
Default Gu50

Hello!Please can you help me with some plans of PP GU50 and eventually with the data of output transformers.
Thank you!
  Reply With Quote
Old 11th March 2009, 02:46 PM   #2
diyAudio Member
 
azazello's Avatar
 
Join Date: Aug 2008
Location: Bulgaria
Gu50 Post #1
Hello!Please can you help me with some plans of PP GU50 and eventually with the data of output transformers.
Thank you!

Friend!
Welcome to me - Bulgaria, /very close to You/, and You will hear my amp GU50 and another tube amps and accust. system.
We will talk about Your PP project.
1.I use for SE output transf. Hammond 125 FSE
2....I will waiting for You....
__________________
Projects: OTL-OCL 6AS7 Gen. Electric, SEs 2A3 RCA, 300B JJ, 6S4S, 4P1L, EL11 Telefunken, 6AS7 RCA, 6S33S, 6S41S, 6S19P, E84L Siemens, E236L Telefunken, headphone ampl. OTL Loftin White 6AS7 RCA,... PPs 6005 Gen. Electric, EL34 Mullard, 6L6....
  Reply With Quote
Old 11th March 2009, 08:01 PM   #3
diyAudio Member
 
Join Date: Mar 2009
Default GU50

Hello! Thank you for the replay.This is the plan i want to make.
http://img18.imageshack.us/img18/655...inalagu50i.jpg
  Reply With Quote
Old 12th March 2009, 07:06 PM   #4
Funker is offline Funker  Germany
diyAudio Member
 
Join Date: Feb 2009
Location: Hamburg, Germany
Hi Christelu,
you will find a superb homebrew version of an GU50 Amp here:

http://www.christl-ludwig.de/neueseite1_old.htm

This guy has designed a 160W mono and a 2x120W stereo amp. Each channel employ 4 GU50 or the WW2 equivalent LS50 (tfk)

The HP is written in german but the pics an the circuit diagrams speaks for themself.

Its contains also the trafo windings scheme and a suitable power supply.

A real "Eisenschwein"

regards
Wolfgang
__________________
Ground your devices before they ground you
  Reply With Quote
Old 12th March 2009, 10:50 PM   #5
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Here is 2x80W stereo amp, uses GU-50 output tubes.

Click the image to open in full size.
__________________
The Devil is not so terrible as his math model is!
  Reply With Quote
Old 13th March 2009, 02:56 AM   #6
rdf is online now rdf  Canada
diyAudio Member
 
rdf's Avatar
 
Join Date: Jun 2004
Location: big smoke
Didn't that end up on e-bay?
__________________
Ears aren't microphones.
  Reply With Quote
Old 13th March 2009, 04:06 AM   #7
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Quote:
Originally posted by rdf
Didn't that end up on e-bay?
Yep. To cover expenses on pats used.

I'm building a new version now.
__________________
The Devil is not so terrible as his math model is!
  Reply With Quote
Old 30th October 2009, 06:20 AM   #8
diyAudio Member
 
Join Date: Oct 2009
Location: Australia
Im amazed at how little te heaters draw on these tubes.
I bought a quad of them this week, with sockets, just on the appeal of the look and the wattage. way cool.
Came from sovcom too, paid very little for them, in fact got 2 RFT 12AT7's as well i paid the same for them!
I maybe dreaming, but amp planning a build of a bass guitar amp for a friend first, then for a customer if it works out. Looking at combining a couple of ampeg schemos.
Google GU50, and its this forum that gets all the hits!
Oh, my first post too
Hope the GU50's make a cool, very clean bass rig, should be frustrating fun finding out!
Don
  Reply With Quote
Old 30th October 2009, 10:58 PM   #9
Jeb-D. is offline Jeb-D.  United States
diyAudio Member
 
Jeb-D.'s Avatar
 
Join Date: Nov 2005
Location: SoCal
GU50 seems like a good choice for a guitar/bass amp. They are built sturdy and have some pretty serious snap in sockets available.

Speaking of the sockets....have you plugged any of the tubes in the wrong way yet?
  Reply With Quote
Old 30th October 2009, 11:06 PM   #10
diyAudio Member
 
Join Date: Oct 2009
Location: Australia
Quote:
Originally Posted by Jeb-D. View Post
GU50 seems like a good choice for a guitar/bass amp. They are built sturdy and have some pretty serious snap in sockets available.

Speaking of the sockets....have you plugged any of the tubes in the wrong way yet?
Ive not actually got my hands on them yet. Should be here in a week. Then i can go ahead and put them in wrong!
I have a pretty decent idea of the schemo im gonna try, trying to work out the order for transformers is tough. I order direct thru heyboer for my usual guitar amps, they have been great. Im just trying to work out the spec i will need to run a quad of these GU50's, and how im gonna get the screensupply lower, and higher heaters. Hmmm. I can order multi taps, for 5 dollars extra a tap, so if it all gos to hell, im gonna get taps to suit the standard ampeg with 6550's. Make it all usable.
Should be interesting!
  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
Gu50 output problems beamnet Tubes / Valves 31 27th April 2013 05:53 PM
Gu50 Set ? pwan Tubes / Valves 3 22nd April 2007 04:15 PM
Audio schematics for GU50 ???? felixx Tubes / Valves 16 8th February 2007 05:19 AM


New To Site? Need Help?

All times are GMT. The time now is 03:38 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