OK boys & girls....I'm off & running come this Thursday...as my parts 'present' arrives from the States. Inside is all the correct resistors, caps, sockets, pots...for me to get started in all honesty. Building a tube amp has been bantered about now since 07. It all started when I bought Morgan Jones book in about 05.....Moved to Argentina shortly there-after. Since we all (Whole extended family) brought our 110VAC stuff we wound up having to get step-down transformers 220-110.
Well...my father-in-law had a US spec Freezer & Dryer. Contacting a local builder he wound up getting a monster to spec transformer(I'll get-cha a picture),... hearing how much he paid for the beast appx $250 USD......got me thinking about tube-amps???
OK, this is the deal, bantered, dreamed..over time learned as much as possible or so...perhaps the tipping point was my wifes long lost blackballed sister shows up.....my wife re-connects & develops a relationship. While visiting one day at her place...she tells me of this "stuff" I might be interested in "He used to work at a long since shut-down TV shop"" Big box-O-tubes!!!!
While perusing thru the Forums someone pulls up a Parallel 12B4 SE schematic...as usual I save it....(You should see how many circuits, images,renderings I have..bazillion!)
So here I am sorting tubes & I've got a few 5AR4 rectifyers, a few more of 12AU7s, & five 12B4s' Ta Da.........My acquaintance here sends me a pair of sockets for the 12B4s.
Fast forward another year or two....my sister-in-laws going to visit "Would you like anything from the States??"" Damn it all...."Honey? I want some electronic supplies OK?" "Is that for that stupid thing you've been always talking about?"" ###This coming thursday###
OK.....this is the circuit......If this is an original, as in "That's My circuit!"....well, what can I say....I will be building this circuit & a functional amp will result.
Couple of questions, How much will both channels consume in Ma?
Can I use a SMPS to drive the 5V heater for the 5AR4? I would think not.
Just a little more time(1-2) yrs. Ha, Ha!
---------------------------------------------------------Rick.........
Well...my father-in-law had a US spec Freezer & Dryer. Contacting a local builder he wound up getting a monster to spec transformer(I'll get-cha a picture),... hearing how much he paid for the beast appx $250 USD......got me thinking about tube-amps???
OK, this is the deal, bantered, dreamed..over time learned as much as possible or so...perhaps the tipping point was my wifes long lost blackballed sister shows up.....my wife re-connects & develops a relationship. While visiting one day at her place...she tells me of this "stuff" I might be interested in "He used to work at a long since shut-down TV shop"" Big box-O-tubes!!!!
While perusing thru the Forums someone pulls up a Parallel 12B4 SE schematic...as usual I save it....(You should see how many circuits, images,renderings I have..bazillion!)
So here I am sorting tubes & I've got a few 5AR4 rectifyers, a few more of 12AU7s, & five 12B4s' Ta Da.........My acquaintance here sends me a pair of sockets for the 12B4s.
Fast forward another year or two....my sister-in-laws going to visit "Would you like anything from the States??"" Damn it all...."Honey? I want some electronic supplies OK?" "Is that for that stupid thing you've been always talking about?"" ###This coming thursday###
OK.....this is the circuit......If this is an original, as in "That's My circuit!"....well, what can I say....I will be building this circuit & a functional amp will result.
Couple of questions, How much will both channels consume in Ma?
Can I use a SMPS to drive the 5V heater for the 5AR4? I would think not.
Just a little more time(1-2) yrs. Ha, Ha!
---------------------------------------------------------Rick.........
Use a 12BH7 instead. Other than allowing for a doubled heater current draw, the linear 12BH7 is a direct substitute for the 'U7.