F6 Amplifier - Page 14 - 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 24th July 2012, 03:28 PM   #131
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Quote:
Originally Posted by Zen Mod View Post
one detail is indicative - existence of +/-V1 and +/-V2
Not understanding completely, but are you referring to a normal circlotron and the presence of 2 sets of rails. It seems we are accomplishing this with a single set and the transformer.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 24th July 2012, 03:28 PM   #132
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
@ flg

input ones are small Toshiba's , without doubt

think M2

@ Buzz

dunno - just came to my mind that there is either :

- inserted reg (or filter) for input stage , fed from common FW PSU (+/-22Vdc) , or

- there is separate PSU for output stage , with higher voltage than common FW PSU

I'm just mudding the water now , have no slightest clue what Papa is thinking ...... except that he's having major laughing time ......

__________________
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; 24th July 2012 at 03:35 PM.
  Reply With Quote
Old 24th July 2012, 04:13 PM   #133
diyAudio Member
 
Join Date: Jan 2012
Location: Pennsylvania
Blog Entries: 1
Quote:
Originally Posted by labjr View Post
Why is everyone debating whether the phase is correct? Obviously it functions properly. It wasn't designed by a beginner.
Mr. Pass may have had a trick up his sleeve.
  Reply With Quote
Old 24th July 2012, 04:13 PM   #134
generg is offline generg  Germany
diyAudio Member
 
generg's Avatar
 
Join Date: Jul 2009
Location: Near Frankfurt
Help..... so many bees are humming! That I cannot hear my own voice......
__________________
and the First Wtt is......a really First Class PSS Idea
  Reply With Quote
Old 24th July 2012, 04:32 PM   #135
The Dastardly Dad of Three
diyAudio Member
 
Join Date: Sep 2009
Quote:
Originally Posted by Zen Mod View Post
exactly why I'm all the time , surprised to the bone

as I wrote , only logical way , to stay on same path , is that upper modulation is attenuated in some way

but , I will not be surprised if Papa say tomorrow that there is ( intentional or not ) mistake on schematic , in secondary phasing

zm.... good catch on V2 and V1. What this is for we can only guess at huh ?... from the clues so far, (4*600ohm windings) it would seem that the primary is two 600 ohm windings in parallel ... with each secondaries 600ohm each also, this doesn't give any voltage gain...more thinking to do here ...

Anyway, seperately, with respect to the phase of the secondaries, this is how i look at it ... i looked at the inputs relative to the phase dot on the tx secondaries, and for the outputs, relative to 0v (hence i drew in the eyes lols) ... if my feeble mind if correct, that means the outputs DON'T cancel each other out if the fets are driven in the way indicated by the schematic in post 1......

now how do we think about that feedback loop and unequal voltage gain for top and bottom device .........
Attached Images
File Type: jpg jf6op.jpg (11.1 KB, 865 views)
  Reply With Quote
Old 24th July 2012, 04:37 PM   #136
flg is offline flg  United States
diyAudio Member
 
flg's Avatar
 
Join Date: Jul 2005
Location: North East
Quote:
Originally Posted by generg View Post
Help..... so many bees are humming! That I cannot hear my own voice......
What? Ich Verstae sie nicht Generg
__________________
"It was the perfect high end audio product: Exotic, inefficient, expensive, unavailable, and toxic." N.P.
  Reply With Quote
Old 24th July 2012, 04:37 PM   #137
cjkpkg is offline cjkpkg  United States
diyAudio Member
 
Join Date: Aug 2008
Location: Roswell GA
Perhaps???

I know NP said 4 600 ohm windings, unless the input is wired in series or something...Looks like one of these per channel fits the schematic in the first post.
  Reply With Quote
Old 24th July 2012, 04:41 PM   #138
The Dastardly Dad of Three
diyAudio Member
 
Join Date: Sep 2009
Quote:
Originally Posted by cjkpkg View Post
Perhaps???

I know NP said 4 600 ohm windings, unless the input is wired in series or something...Looks like one of these per channel fits the schematic in the first post.
possible i guess but series connection of the primaries would make the tx setup a step-down (ungain stage ?) but then again with NP, you never know
  Reply With Quote
Old 24th July 2012, 04:43 PM   #139
generg is offline generg  Germany
diyAudio Member
 
generg's Avatar
 
Join Date: Jul 2009
Location: Near Frankfurt
Quote:
Originally Posted by flg View Post
What? Ich Verstae sie nicht Generg
Thanks flg! It is a pleasure to follow the discussion, unfortunately beyond my horizon.....
__________________
and the First Wtt is......a really First Class PSS Idea
  Reply With Quote
Old 24th July 2012, 04:56 PM   #140
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 kasey197 View Post
zm......
few mistakes :

- smilies on your schm are not smiling

- think what's happening in output mode ........ your analysis is wrong for one half of output ; as drawn in post one sch ,they're exactly the same

btw. world is full with 600:600 xformers ,where each winding is CT , so effectively having 4 x 150R windings

it's extremely hard to find 4x600R xformers anywhere .......
__________________
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; 24th July 2012 at 05:01 PM.
  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 04:29 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