Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => PC Express and JSchem - Schematics and Layout diagrams => Topic started by: tubenit on November 19, 2014, 10:10:14 am
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Another idea that I would love to build and probably will at some point. I view it as a minimalist approach in the number of tubes (and one could use a solid state rectifier with proper PT for one less tube). This could be built using Doug's 18w PT & OT if using a 5Y3GT rectifier.
However, it would have an active FX, PPIMV and a midboost. All of which I find to be very useful features. The tone stack is borrowed from a Dumblish style that I modified for my current D'Mars ODS.
With the PPIMV and the active FX and only 7-9 watts of power, I think this would make a wonderful bedroom volume amp.
CHECK for ERRORS! Compare schematic with layout. If there is a discrepancy, go with schematic values, etc...
With respect, Tubenit
Added a 6AQ5 version.
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Here is another HoSo56 Minimalist idea but it uses 6v6's and a concertina phase invertor
CHECK for ERRORS! DRAFT idea. Compare schematic with layout, if there is a discrepency ......... go with the schematic.
With respect, Tubenit
Actually built & proven schematic and layout for the "Minimalist with 5879 V1 and 6BM8's" attached. 3/7/2018 schematic & layout. This amp has remarkable full sounding tone with good bass response at very low volumes.
thread for this build with photos is here: http://el34world.com/Forum/index.php?topic=23013.0