What's wrong with the kiss,boy ? - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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 20th June 2016, 11:44 AM   #1
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Default What's wrong with the kiss,boy ?

What's wrong with the kiss,boy ? ........ or - How I gained a gain ,little before Lee De Forest and little after Papa

lookie : Iron Pre | Zen Mod Blog

I already posted that link in few places here , but as it seems ,few Greedy Boyz are greedy for more info

cheap and clean way of having 6db (or little more ,with different gain device)

it's already everything written in that blog post , but to recapitulate :
-pot , then buffer of your choice , then 600:600 xformer connected as autoformer , voila! -there is 6db gain

if approach was good eons ago , when microfarrads and active gain devices were much more expensive than chunk of copper and iron,if approach is good for numerous mic input stages , if approach is good for F6 and especially M2 (buffer-autoformer-buffer) , it must be god for line stage too.

and yes , with 1+1 autoformer , Rout is four times Rout of buffer itself

xformers : Edcor have few , Jensen , Sowter, Lundahl etc.............

-do not expect that more expensive ones are necessary better sounding,
-do not expect maximum verity from buffer if you not use decent (shunt , my poison) reg.
-you can go wild and make your own autoformer , equipped with 24 taps , so skip pot on input and use autoformer at output, as volume attenuator and gain device ,as one device
-or you can make it this way - buffer -commercial AVC (200$ Slagle?)-output autoformer
-or you can go wild and connect commercial AVC to appropriate tap , as output autoformer and have 6db gain ...... that would be buffer -commercial AVC connected on proper tap

now I'm working on balanced Iron Pre ..... will post that soon too
__________________
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; 20th June 2016 at 01:14 PM.
  Reply With Quote
Old 20th June 2016, 12:50 PM   #2
diyAudio Member
 
Join Date: Jan 2002
Location: Tyrone Ga. U.S.A.
Here is a cute idea to get 6db of gain from a buffer. Wonder if it would work with a B1 with a split supply ?
Attached Images
File Type: png inverted%20diamond%20buffer%20topology.png (56.8 KB, 2397 views)
  Reply With Quote
Old 20th June 2016, 12:59 PM   #3
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
well , idea s that nothing is wrong with simple kiss , so no active gain stages

plenty of these in myriad threads around
__________________
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 20th June 2016, 06:14 PM   #4
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
We can take the foreplay as read....

  Reply With Quote
Old 21st June 2016, 12:35 AM   #5
wtl is offline wtl  Australia
diyAudio Member
 
Join Date: Mar 2012
Location: by the sea
ZM, Would this work with a PASS B1.

Pot - B1 - Edcor wsm 600x600.

Steve.
  Reply With Quote
Old 21st June 2016, 02:18 AM   #6
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
Blog Entries: 2
I was going to make some smart ar5e comment about you and Jacco kissing at the burning amp festival, but I'll just keep quiet about that.
Haha
__________________
"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass
  Reply With Quote
Old 21st June 2016, 04:19 AM   #7
Chul is offline Chul  South Korea
diyAudio Member
 
Join Date: May 2003
Location: Pusan Korea
This could be a solution for old problems. I will try this with LDR+B1+Sowter 3575.
Thank you ZM.
__________________
  Reply With Quote
Old 21st June 2016, 07:12 AM   #8
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
B1,yes, but which iteration ?

in case of JFet buffer made of same sex JFets , that means double Rout comparing to complementary JFet buffer ....... and Rout is veeery important when feeding xformer with lowish inductance
I would double JFets to decrease Rout
in fact - I would put both JFets in parallel , and put bjt CCS down , no output foolproof resistor
__________________
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 21st June 2016, 07:13 AM   #9
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally Posted by 2 picoDumbs View Post
I was going to make some smart ar5e comment about you and Jacco kissing at the burning amp festival, but I'll just keep quiet about that.
Haha
naah

you're just jealous

__________________
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 21st June 2016, 03:17 PM   #10
diyAudio Member
 
Join Date: Jan 2012
Location: Pennsylvania
Blog Entries: 1
Hello Zen Mod. Your final product is simple, and aesthetically beautiful. Bravo.
  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
KISS the Ultimate Amplifier Elso Kwak Solid State 54 16th November 2008 11:51 AM
KISS my Subwoofer seekingwisdom Subwoofers 14 21st September 2004 06:40 AM


New To Site? Need Help?

All times are GMT. The time now is 06:20 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki