F6 Amplifier - Page 201 - 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 20th September 2012, 06:49 AM   #2001
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
congrats on 2K-th post !

__________________
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 September 2012, 07:55 AM   #2002
diyAudio Member
 
bobodioulasso's Avatar
 
Join Date: May 2008
2001: A Space Odyssey
  Reply With Quote
Old 20th September 2012, 04:53 PM   #2003
lhquam is offline lhquam  United States
diyAudio Member
 
Join Date: Mar 2010
Location: Olalla, Oregon: Land of the 100 Valleys
Here is a simulation of the Zen Pot with Rs=0R47, and the top-cap connected to the source pin of the top FET. Rswip2 is the wiper position of the Zen Pot which is across the bottom source resistor. As you can see, the distortion levels go above 1% with Rswip2>0.35.

(non)degeneration , while having Zen Amount pot on lower one

then put pot on front plate , and write SIT 1 wannabe

[/QUOTE]
Attached Images
File Type: jpg F6-acs5-zen-pot.jpg (140.5 KB, 441 views)
  Reply With Quote
Old 20th September 2012, 05:00 PM   #2004
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
so , conclusion - wiper closer to source - higher distortion , wiper further from source - lower distortion

btw. we see it again - sim is useful , but numbers are way of
__________________
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 September 2012, 05:04 PM   #2005
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
btw - if one is keen to have Zen Amount pot , it's better to have it in form of switch(ing attenuator)

resistor net is more than easy to calculate ,even in case of congesting it in some central area of setting

that way symmetry between channels is easier to mantain

say that 2-section/12-position Lorlin is good for 2 channels in same case

or whatever combination
Click the image to open in full size.
__________________
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 September 2012 at 05:07 PM.
  Reply With Quote
Old 20th September 2012, 05:05 PM   #2006
lhquam is offline lhquam  United States
diyAudio Member
 
Join Date: Mar 2010
Location: Olalla, Oregon: Land of the 100 Valleys
Backwards. The wiper increases from top to bottom, so wiper=0 is wiper connected to source.
Quote:
Originally Posted by Zen Mod View Post
so , conclusion - wiper closer to source - higher distortion , wiper further from source - lower distortion

btw. we see it again - sim is useful , but numbers are way of
  Reply With Quote
Old 20th September 2012, 05:09 PM   #2007
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 lhquam View Post
Backwards. The wiper increases from top to bottom, so wiper=0 is wiper connected to source.
good

that's telling us that increase in S , so increase in OLG , so increase in NFB is more important/effective than increase of amount of local degeneration
__________________
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 September 2012, 05:10 PM   #2008
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
we are eventually going to make Swiss Knife F6

one form fits all ......

Attached Images
File Type: jpg knife-4-1000.jpg (124.1 KB, 416 views)
__________________
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 September 2012, 05:22 PM   #2009
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Lorlin reminds me on Lorelei which reminds me on Richard Wagner - Der Ring des Nibelungen - YouTube
__________________
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 September 2012, 05:46 PM   #2010
lhquam is offline lhquam  United States
diyAudio Member
 
Join Date: Mar 2010
Location: Olalla, Oregon: Land of the 100 Valleys
Yeah, that would work. What about a rotary switch connecting an array of trimmer pots? That way you could a have a number of "distortion profiles" corresponding to how the pots are adjusted.

Another idea is a 10 turn pot with this kind of adjusting knob, which allows settings to be repeatably "dialed-in".

Quote:
Originally Posted by Zen Mod View Post
btw - if one is keen to have Zen Amount pot , it's better to have it in form of switch(ing attenuator)

resistor net is more than easy to calculate ,even in case of congesting it in some central area of setting

that way symmetry between channels is easier to mantain

say that 2-section/12-position Lorlin is good for 2 channels in same case

or whatever combination
Attached Images
File Type: jpg multi-turn-know.jpg (8.1 KB, 394 views)
  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 F6 diy coming soon ? Nounours18200 Pass Labs 37 31st August 2012 04:35 PM
Hi Vi F6 box ioro Multi-Way 4 15th April 2012 08:27 PM
Whats happening with F6? jugoslavija Pass Labs 1 1st November 2011 07:39 AM
Hi-Vi F6 kkosiba Multi-Way 14 9th November 2007 08:38 AM
F6 traw Pass Labs 7 2nd November 2007 07:09 PM


New To Site? Need Help?

All times are GMT. The time now is 03:25 PM.


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