First Time Amp - 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 9th February 2005, 07:47 PM   #1
jwatts is offline jwatts  United States
diyAudio Member
 
Join Date: Jan 2004
Location: Erwin, Tennessee
Default First Time Amp

Can some body recommend me a simple tube amp design for someone who has never built one? I do have a working knowledge of basic electronics, science, and math. Can someone point me in the direct of a good book that would introduce me to the theory of amp tube design?
  Reply With Quote
Old 9th February 2005, 08:00 PM   #2
kmj is offline kmj  Sweden
diyAudio Member
 
kmj's Avatar
 
Join Date: Feb 2004
Location: Falkenberg
there's one Here
  Reply With Quote
Old 9th February 2005, 10:46 PM   #3
diyAudio Member
 
audiousername's Avatar
 
Join Date: Jul 2004
Location: Melbourne, Victoria
Morgan Jones' Valve Amplifiers is a very good introduction, but you'll have to either buy it or go borrow it from a library. Failing that, you could try the Radiotron Designers' Handbook, 4th Edition, but it is a much steeper learning curve (and makes for dryer reading )
__________________
Jason
  Reply With Quote
Old 9th February 2005, 11:28 PM   #4
Sherman is offline Sherman  United States
diyAudio Member
 
Join Date: Feb 2004
Location: Chicago area
Here's one that is inexpensive to build and requires only a single tube per channel. At 3 watts it won't make your ears bleed but it would be a good intro.

The site gives you the schematic, a parts list and a pictoral layout.

http://www.lh-electric.4t.com/projects/tiny3w.htm
__________________
--Sherman
  Reply With Quote
Old 10th February 2005, 01:26 PM   #5
jwatts is offline jwatts  United States
diyAudio Member
 
Join Date: Jan 2004
Location: Erwin, Tennessee
Default Thanks Guys

Sherman and kmj these articles are exactly what I had in mind. audiousername the handbook is a monster. Thank goodness for high speed. This should be enough to get me started.
  Reply With Quote
Old 10th February 2005, 03:12 PM   #6
Sherman is offline Sherman  United States
diyAudio Member
 
Join Date: Feb 2004
Location: Chicago area
Default Re: Thanks Guys

Quote:
Originally posted by Jason Watts
...This should be enough to get me started.

Remember, vacuum tubes are very forgiving devices and if you get your components and parameters within about 10% or so everything should work. Don't get hung up on nailing exactly 300 volts for B+ (for instance). 270 to 330 volts in most cases is close enough for government work.

Also remember that potentially lethal voltages exist in most tube circuits. Read the safety thread here and take precautions.

Good luck and have fun!
__________________
--Sherman
  Reply With Quote
Old 10th February 2005, 03:14 PM   #7
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
Default Re: First Time Amp

Quote:
Originally posted by Jason Watts
Can some body recommend me a simple tube amp design for someone who has never built one?
Do you have any tube parts, especially the iron (PT and OPTs)? That's where a lot of the expense is.

It's easy to say 'built this, it's easy' but it's not much use spending money on parts you may not use again. Do you think, if you find the audible results positive, that you'd build a bigger/different amp? And if so, how much power do you think you'd need? I'm asking because it's easy to be shown a sub 3W SE amp to build that would be easy as a first project. But, if you think you'd need 15W later, than the OPT you bought for this project will be useless for another. just something to think about before you plunge in and spend the money on iron etc.

Check the page I've linked below. there are a number of SE and PP designs there. The Shisheido PP is good (I've built one very similar) and the 6EM7 design has a lot of potential as it's a really sweet tube.

http://www.the-planet.org/

Enjoy.
  Reply With Quote
Old 10th February 2005, 04:42 PM   #8
jwatts is offline jwatts  United States
diyAudio Member
 
Join Date: Jan 2004
Location: Erwin, Tennessee
Default Tube Design

My real interest here is being introduced to tube theory. I wanted to a very simple amp with a very simple description of how each section or stage functioned. That is what I got. At the same time I was looking for some detailed theory for me to study. My intent is to build a simple amp from my own design. It is fairly simple to follow someone elseís wiring diagram or schematic. Doing this really doesnít teach me too much about how it really works. I have some tubes in my parts pile in the garage. I will to look and see what I got. I already have a tube receiver in my system that has about 50 watts per channel. That is all I really need. I do plan on building two mono blocks in the near future that produces the same amount of power. I donít like the tone controls on the receiver and would prefer all of the signal processing be performed digitally. At the same time I want to create to mono blocks simply for amplification purposes only. I will try to use some of the parts from my first amp on the two mono blocks. I hope to keep the pricier parts (like transformers) for the mono blocks.
  Reply With Quote
Old 10th February 2005, 06:15 PM   #9
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
Default Re: Tube Design

Quote:
Originally posted by Jason Watts
My real interest here is being introduced to tube theory. I wanted to a very simple amp with a very simple description of how each section or stage functioned.
Also read all of Tubecad.com , especially the Grounded Cathode Amplifier article. Clear and easy to understand.
  Reply With Quote
Old 12th February 2005, 01:33 AM   #10
jwatts is offline jwatts  United States
diyAudio Member
 
Join Date: Jan 2004
Location: Erwin, Tennessee
Default 7591A-P

I got to digging in my garage and found four 7591A-P tubes. Can someone direct me to a sample amplifier circuit that uses these tubes. Simple circuit I hope.
  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
My first time...... tonynorie Solid State 5 4th January 2009 09:12 AM
first time diy jonnyq Multi-Way 5 29th January 2007 08:46 PM
First time caller, long time listener... smallangryboy Introductions 15 19th March 2005 08:10 PM
First time DIY Rodtay Multi-Way 5 9th August 2003 05:03 AM
is doing time alignment now a waste of time? Beggar Multi-Way 9 28th July 2003 05:45 AM


New To Site? Need Help?

All times are GMT. The time now is 05:35 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