SIT devices for DIY - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 14th September 2012, 02:38 AM   #1
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
Default SIT devices for DIY

Any new hints on possible future availability of parts for us to play with ?

I was reminded of this when I was re-reading the nemesis article again today

"Also I have reason to believe that we will see some new SIT parts from a couple of sources in the coming year – parts that you should be able to actually buy.
You should probably start saving for them now... 2011 Nelson Pass"

- if this is one of those 'annoying' questions that gets asked every few days please delete my thread !!
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

Last edited by Bigun; 14th September 2012 at 02:48 AM.
  Reply With Quote
Old 14th September 2012, 11:45 AM   #2
diyAudio Member
 
Alain Dupont's Avatar
 
Join Date: Sep 2003
Location: Paris - France
Hi,

Take a look at :

If You Don't Have a SIT, Fake It...
__________________
Did live about 10 years in Canada
Back to France since the 1st February 2007.
  Reply With Quote
Old 14th September 2012, 01:12 PM   #3
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
Thanks for that - it's a fun thread to read.

It offers high input impedance, better than a naked PASS SIT, albeit with extra parts.
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 17th September 2012, 11:10 AM   #4
diyAudio Member
 
Join Date: Feb 2007
Location: Tashkent
Russian KP926 high-voltage SITs are available still. Unlike Nelson's new SITs, that are better suited for genuine SS designs, the KP926 try to "fake" tube output curves, and could be used in genuine tube schematics.
I enclose the Id(mA) vs Vds(V) curves from datasheet, at various Vgs(V) negative bias voltages. Quite triode-like tubie picture.
Attached Images
File Type: jpg KP926 data.jpg (49.2 KB, 438 views)

Last edited by VladimirK; 17th September 2012 at 11:18 AM.
  Reply With Quote
Old 17th September 2012, 12:33 PM   #5
The Dastardly Dad of Three
diyAudio Member
 
Join Date: Sep 2009
These would need an output transformer ? Where does one buy these ?
  Reply With Quote
Old 17th September 2012, 12:43 PM   #6
diyAudio Member
 
Join Date: Feb 2007
Location: Tashkent
Quote:
Originally Posted by kasey197 View Post
These would need an output transformer ? Where does one buy these ?
Yes, an output transformer seems necessary, but I doubt that the resulting sound would be as good as with tubes. At the same time, there could be some positive features, like no cathode current, no life-time limitation, better output impedance and amp-speaker interaction.
They are sourced from russian sellers, but indirectly, via some person-intermediant, since sellers can not export directly.
  Reply With Quote
Old 18th September 2012, 07:12 AM   #7
diyAudio Member
 
Join Date: Mar 2004
Location: Krakow
Quote:
Originally Posted by VladimirK View Post
Russian KP926
Hi Vladimir
you have PM
__________________
regards, Pawel
  Reply With Quote
Old 18th September 2012, 05:23 PM   #8
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
Vladimirk, I prefer KP801G, do you know of a source for these ?
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 18th September 2012, 05:44 PM   #9
diyAudio Member
 
wrenchone's Avatar
 
Join Date: Feb 2004
Location: Silicon Valley
I'd like to get my hands on some SITs myself for tinkering purposes, though I'll continue "faking it" as well.
  Reply With Quote
Old 18th September 2012, 06:50 PM   #10
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
I think you can still get the Sony parts through "acronman" on Ebay.

  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Approach for an Outline from a DIY Subwoofer - Precision Devices PD2150 inside tiefbassuebertr Subwoofers 21 14th October 2013 10:57 AM
Behind SIT 2 pdyn Pass Labs 0 13th September 2012 08:54 AM
SIT-1 and SIT-2 owner manuals Nelson Pass Pass Labs 25 12th September 2012 07:16 PM
RCM - Record Cleaning Machine URL Collection for finished Devices and DIY tiefbassuebertr Analogue Source 0 10th January 2011 06:11 PM
Analog Devices DIY tube DAC ssstromar Digital Source 17 27th April 2006 10:08 PM


New To Site? Need Help?

All times are GMT. The time now is 07:05 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2