low watt trainwreck

Express, Liverpool, Rocket, Dirty Little Monster, etc.

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dayn
Posts: 158
Joined: Mon Mar 05, 2007 8:45 pm
Location: seattle, wa

low watt trainwreck

Post by dayn » Thu Mar 22, 2007 11:10 pm

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!

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sst4270
Posts: 255
Joined: Mon Jan 08, 2007 8:28 pm
Location: Glen Burnie, MD

Low Wattage Amp

Post by sst4270 » Fri Mar 23, 2007 1:29 am

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

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dartanion
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Location: Redwood City, CA

Re: low watt trainwreck

Post by dartanion » Fri Mar 30, 2007 5:23 am

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!

pureoldsound
Posts: 123
Joined: Sun Sep 10, 2006 7:49 pm

Re: low watt trainwreck

Post by pureoldsound » Fri Mar 30, 2007 12:54 pm

What about the mini Wreck?

dayn
Posts: 158
Joined: Mon Mar 05, 2007 8:45 pm
Location: seattle, wa

Re: low watt trainwreck

Post by dayn » Fri Mar 30, 2007 9:17 pm

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...

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dartanion
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Location: Redwood City, CA

Re: low watt trainwreck

Post by dartanion » Fri Mar 30, 2007 10:38 pm

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!

ampdoc1
Posts: 669
Joined: Sat Feb 26, 2005 12:42 am
Location: Tulsa, Oklahoma

Re: low watt trainwreck

Post by ampdoc1 » Sat Apr 07, 2007 5:38 pm

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

Thanks

bilbal
Posts: 1
Joined: Mon Apr 16, 2007 12:07 am

Re: low watt trainwreck

Post by bilbal » Mon Apr 16, 2007 1:30 am

http://sliberty.googlepages.com/miniwreckinfo

...this should get ya there.

Bill (bilbal)

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