The Amp Garage Forum Index The Amp Garage
A tube amp builder's community
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

low watt trainwreck

 
Post new topic   Reply to topic    The Amp Garage Forum Index -> Trainwreck Discussion
View previous topic :: View next topic  
Author Message
dayn



Joined: 05 Mar 2007
Posts: 157
Location: seattle, wa

PostPosted: Thu Mar 22, 2007 11:10 pm    Post subject: low watt trainwreck Reply with quote

I was wondering if there are any builders here or if anyone knows one that makes a Trainwreck Express inspired amp that uses preamp tubes for output tubes (1-3 watts) that is push-pull and not single-ended. I have seen some single ended amps like the Mini Wreck but am looking for something lower wattage and push-pull.

I have been looking at an amp by a builder here on the forum that is similar to what I am looking for but am having a hard time with the price point being too high. What would a fair price be for a 1-3 watt Express inspired amp?

Any input is greatly appreciated!
Back to top
View user's profile Send private message
sst4270



Joined: 08 Jan 2007
Posts: 255
Location: Glen Burnie, MD

PostPosted: Fri Mar 23, 2007 1:29 am    Post subject: Low Wattage Amp Reply with quote

Since price is an issue may I suggest the Super Single Ended Guitar Amp at Angela Instruments.

Follow this link: http://www.angela.com/

And click on the How To Section.

It isn't push pull as you requested. But it's a low wattage single ended design that runs a pair of output tubes in parallel to increase the wattage a little. I was pricing it out and you could probably build it for under $200. Not including speaker. Especially if you already have some of the passive components.

I was able to build my Trainwreck for about $600 including the addition of the Power Scaling and Bias Mod. It was worth every single penny spent.

Steve
Back to top
View user's profile Send private message
dartanion



Joined: 23 Mar 2007
Posts: 1533
Location: Redwood City, CA

PostPosted: Fri Mar 30, 2007 5:23 am    Post subject: Reply with quote

You could use a dual triode like a 12AT7 or an Octal equivalent for the power section. You could also use a small dual pentode.
_________________
Eardrums!!! We don't need no stinkin' eardrums!
Back to top
View user's profile Send private message Yahoo Messenger
pureoldsound



Joined: 10 Sep 2006
Posts: 123

PostPosted: Fri Mar 30, 2007 12:54 pm    Post subject: Reply with quote

What about the mini Wreck?
Back to top
View user's profile Send private message
dayn



Joined: 05 Mar 2007
Posts: 157
Location: seattle, wa

PostPosted: Fri Mar 30, 2007 9:17 pm    Post subject: Reply with quote

The mini -wreck looks great (Steve sent me the link and I have read his posts). The big difference between that and what I am looking for is single-ended vs. push pull and that 5 watt range vs. 1/2 to 1 watt range. I have owned numerous 5 watt amps and they are just too loud when cranked for home playing.

Still looking...
Back to top
View user's profile Send private message
dartanion



Joined: 23 Mar 2007
Posts: 1533
Location: Redwood City, CA

PostPosted: Fri Mar 30, 2007 10:38 pm    Post subject: Reply with quote

The Moonlight amp uses a 6SN7 for a power tube and about 1W in push-pull. Shouldn't be too hard to graft any of a number of preamps onto this design.

I am thinking of drawing up a few designs and this power section is one that I have been wanting to try for quite some time now.

http://www.amptone.com/delftmoonlightamp.htm

_________________
Eardrums!!! We don't need no stinkin' eardrums!
Back to top
View user's profile Send private message Yahoo Messenger
ampdoc1



Joined: 26 Feb 2005
Posts: 638
Location: Tulsa, Oklahoma

PostPosted: Sat Apr 07, 2007 5:38 pm    Post subject: Reply with quote

Can someone point out the link to the Mini-Wreck?

Thanks
Back to top
View user's profile Send private message Send e-mail
bilbal



Joined: 16 Apr 2007
Posts: 1

PostPosted: Mon Apr 16, 2007 1:30 am    Post subject: Reply with quote

http://sliberty.googlepages.com/miniwreckinfo

...this should get ya there.

Bill (bilbal)
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    The Amp Garage Forum Index -> Trainwreck Discussion All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group