Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

1, 2, SIT3
1, 2, SIT3
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 31st March 2018, 01:35 PM   #21
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
1, 2, SIT3
see- much written in few first sentences of 6moon article

Quote:
Nelson Pass had teased today's assignment with "..."been pondering when and how to release the SIT-3, probably the last commercial SemiSouth SIT amp. It still puts out 10 watts and so on but operates the device as a follower in common-drain mode. The SIT-1 and 2 used the SIT in common-source mode. That resulted in the interesting character of those two amplifiers to highlight the triode nature of the device. Common-drain lacks voltage gain but offers much lower noise, distortion and output impedance. In the SIT-3, the voltage gain develops through an input stepup autoformer which gives about 12dB. No feedback of course. Same box as ever. Lower price. The last piece of business there is a new front end." By the end of that review, the project had morphed to "the SIT-3 was recently revised as a result of marathon listening sessions. Another circuit version emerged the winner. I expect a pilot run to surface beginning of March followed shortly by production."
one case - think how much dissipation

10W , common drain ;

is it PP or SE - who cares ...... especially taking in account that PapaSit is factually of unique Sex , so no other (natural) one to pair it with

so , it can't be "normal" PP ...... so either pure SE or extremely wakoo PP ......

knowing what I know , hard to say how it would be easy/hard to guess , without knowing ......
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM

Last edited by Zen Mod; 31st March 2018 at 01:37 PM.
  Reply With Quote
Old 31st March 2018, 03:43 PM   #22
wdecho is offline wdecho  United States
diyAudio Member
 
Join Date: Oct 2014
I thought maybe like F6 which uses just one flavor of transistor. I will guess SE from description at 6moons but soon we will see when released for sales.
  Reply With Quote
Old 31st March 2018, 03:49 PM   #23
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
1, 2, SIT3
he's in even more wakoo state of mind , lately

(and just when we (always ) think that more is not possible)

F6 like is ........ passe ?

__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 31st March 2018, 06:07 PM   #24
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
1, 2, SIT3
Got permission from FunnyPa ..... to say little more

SIT 3 is nothing more and nothing less ...... than Most Greedy Boy, of them all... or (there is no) DEFiSIT of Papa's Koans



Click the image to open in full size.


Click the image to open in full size.

as hinted , pretty wakoo follower
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 1st April 2018, 09:40 AM   #25
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
1, 2, SIT3
Silence?

disappointed that SIT-3 is something half-familiar?



(I can say that I'm not disappointed ........ in fact -contrary! )
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 1st April 2018, 10:56 AM   #26
wdecho is offline wdecho  United States
diyAudio Member
 
Join Date: Oct 2014
A picture says a thousand words.

Cannot tell from picture if the 2 big transistors per channel are SIT's without closeup picture or much more info than described by 6moons from picture. Can see input transformer and big cap on output guessing. Interesting though.

Last edited by wdecho; 1st April 2018 at 10:59 AM.
  Reply With Quote
Old 1st April 2018, 12:07 PM   #27
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
1, 2, SIT3
you have more than enough info in linked thread , post #24
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 1st April 2018, 12:35 PM   #28
jpak is offline jpak  United States
diyAudio Member
 
jpak's Avatar
 
Join Date: Jun 2007
Location: CT
Damn thought it was March 31 today!!

And SIT-1 and 2 are now out of production ? Oh no these were my dream amps.
  Reply With Quote
Old 1st April 2018, 02:25 PM   #29
woofertester is offline woofertester  United States
diyAudio Member
 
Join Date: Jun 2011
Quote:
Originally Posted by jpak View Post
Damn thought it was March 31 today!!

And SIT-1 and 2 are now out of production ? Oh no these were my dream amps.
firstwatt.com says that SIT1 and SIT2 are available.
  Reply With Quote
Old 1st April 2018, 02:29 PM   #30
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
1, 2, SIT3
First Watt Products

it's probably that Papa didn't updated his table
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote

Reply


1, 2, SIT3Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 10:45 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki