rh-tech.org

OK, I think all of the parts are on their way. This is an amp circuit based on Ken Fischer's famous Trainwreck Express/Liverpool preamp glued to a simple 6P1P push pull output section from the www.wattkins.com pushy croaker amp. Ken Fischer was a tube amp genius; the preamp, phase inverter and output section of his amps were carefully tuned so that each performs exactly as required to get the trademark tone and response.

The research and experimentation was done by katopan (www.wattkins.com forum member), he dug into this thing and used his electronics knowledge and tools to figure out how it works, and how to make the Express/Liverpool circuit work with a different output section.

The amp uses surplus Russian 6P1P-EV output tubes (a Russian tube like the 6AQ5, a mini-6V6) and 6N2P-EV dual-triode tubes for the preamp and phase inverter (the 6N2P is very much like an older version of a Sovtek 12AX7WA with a 6.3V only heater wiring). The Russian tubes are obtained through ebay sellers, both are inexpensive tubes even including shipping and handling charges. I'm going to use an Antek AS-05T240 toroidal power transformer and a Hammond 125E output transformer.

Here's the v3 schematic: http://www.wattkins.com/files/wattkins/Thrifty_Wreck_Schem.pdf

The thread is here (you'll have to register on www.wattkins.com): http://www.wattkins.com/node/17851

The attached picture is a layout by Dust Puppy from www.wattkins.com