ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!

 
Listen to great tunes streaming live right now!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  

turning a VTM-60 into an SLO


 
11/16/2003 6:46 PM
jeremy
email
turning a VTM-60 into an SLO
im going ot be keeping the capacitor board, and the power tube board. everything else comes out. i have a few questions.  
 
1)im adding a 12ax7 and a 6AV6. im good on the b+ rail. same kind of rail, and number of caps. but do you think the tranny can take the extra heater current? approximately .6 amps at 6.3V. my guess is it wont be able to keep up, and ill need ot put in a small tranny.  
 
2)anyone want these 2 boards? the main circuit board, and the front input/potentiometer board. all parts are on it, and is in good condtion, w a few mods. it works to the best of my knowledge, and was working b4 taking it out of the amp. $25.  
 
thanx.  
 
jeremy
 
11/16/2003 9:54 PM
kalen
email

it will take the extra current. ive run el34's (an extra 1.2 amps) in my vtm 60 for many months without any problems.
 
 
  Thursday
Book Of The Day The Ultimate Tone, Volume III by Kevin O'Connor
Have you ever wondered if there is a better way to build a Bassman, Champ, Plexi, an 800, AC-30, Bulldog or Portaflex? Or you wanted to build an SVT with off-the-shelf parts? How about a master-volume amp that doesn’t change tone with the master setting? Everything you need to know is right here, including: proper grounding techniques, wiring methods, and mechanical considerations. Eighteen chapters cover the “iconic” amps everyone knows and loves, with schematics and layouts for each, along with the technical history of the product. Eyelet-board and chassis-mounted tube socket construction is used throughout, for easy servicing and modding. TUT3 is very accessible even if you cannot fully read a schematic and is a "must have" if you are going to build an amp for your self.

Note: The Ampage Archive is an Amazon Associate site. A small commission is paid to the site owner on any qualified purchase made after clicking an associate link such as the one above.
 
11/17/2003 2:16 AM
Enzo
email

PV transformers tend to be pretty robust, the extra half amp will not be a problem.  
 
Why use the 6AV6 instead of just half a 12AX7? If you use the AX, then anyone using the amp will eb able to get replacements readily. If the 6AV6 fails, they will have to order it from somewhere - no one will stock it locally.
 
11/17/2003 1:22 PM
jeremy
email

cool. i didnt know how much current it would allow me to sink.  
as ar as the 6AV6, why waste a triode. i have a few of them NOS, and can get them at purchase radio in ann arbor. they have alot of tubes. plus, i like to use different tubes, it tests my skills in hookup..... :D  
also, this amp will be donated to a musicians orginization that i belong to, so maintenance will be up to me. in the event of this orginization breaking up, the amp reverts back to me.  
 
jeremy
 
   Page 1 of 1