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Messages - mishagolin

#1
Requests / Re: Sub-mini tube amps
December 08, 2014, 01:09:43 PM
thomas, a beautiful build you've got there.

i had read about Dana's sub mini plexi. thats how i found out about his submini power pentode.

still really excited to see and hear some of these builds
#2
Requests / Re: Sub-mini tube amps
October 03, 2014, 03:19:39 AM
Quote from: thomasha on October 30, 2013, 12:01:09 AM
Well, after murder one I tried to build my own tube amp combo...
based on jcm800 amplifier, using russian submini tubes, with PP triodes and LTP PI.
I used Dmitry's power amp schematic, and made a PTP layout using nails as turrets.
The speakers are old oval computer speakers, and I used a big muff tonestack instead of the TMB.
The power supply is the max1771 SMPS, from frequency central projects, and a 12V, 2A wall wart.
I made some videos with my crappy phone cam:

Beautiful work Thomas. I was thinking of taking this route. Do you think the sound would be greatly improved if you switched the last tube from the 6n16b dual triode to two power pentodes? I'd imagine since the EL34 is a pentode that something like the 5902 would sound closer to the real thing, just quieter.

i think any beam power amplifier might give you a better power amp section.
#3
Requests / Re: Sub-mini tube amps
September 08, 2014, 05:51:35 PM
Quote from: madbean on July 15, 2014, 01:01:49 AM
it's only taken...four years to finally get around to this? We getting close.

Brian, Could you give a brief overview of the amps you've created?

I know you were designing them with charge pump power supplies but what about the other design aspects

Are these mainly 6111, 6112, 6021 tube styles?
Push-Pull or single ended?
Hammond 125 output tranny for push pull? Hammond 1750 for single ended?
Will they have a headphone output option (bypass the power amp section)?

I'm really looking for a small headphone amp i can build that is a preamp section off of a tube guitar amp. I can try to mock it up myself but my etching abilities suck. I was considering buying your PCB and then just populating the preamp section and pushing that straight to an output without the tube power amp or output tranny.

Misha