F6 Amplifier - Page 134 - 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 31st August 2012, 02:10 PM   #1331
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 Antoinel View Post
ZM: I fully agree with you that the transformer in the Tango schematic is not a ground loop isolator per the underlined. By contrast, the Jensen in Conceptual F6 will operate like a ground loop isolator because the CD player [could be battey operated] or other input source [that of Rush] and the power amp have independent grounds. And there is no reason [electrical, performance] to join these grounds either.
as shown in post #1 ( and later , revised schm) :

-output of amp is referenced to gnd via PSU and NFB
-bottom of Jensen's primary is referenced to gnd

so - how is Jensen gnd breaker ?

only if you exclude NFB , there is no galvanic connection between input and OS
__________________
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 August 2012, 02:22 PM   #1332
diyAudio Member
 
Join Date: Jan 2012
Location: Pennsylvania
Blog Entries: 1
Quote:
Originally Posted by Zen Mod View Post
as shown in post #1 ( and later , revised schm) :

-output of amp is referenced to gnd via PSU and NFB
-bottom of Jensen's primary is referenced to gnd

so - how is Jensen gnd breaker ?

only if you exclude NFB , there is no galvanic connection between input and OS
ZM: I fully agree with you. My past comments and this one are the same. They pertained to operating the output stage of a modified Conceptual F6 in an open loop manner only [the underlined].
  Reply With Quote
Old 31st August 2012, 02:42 PM   #1333
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
What seems to be true is that the FE and output stage can be top notch without much trouble, but the important components will be the xformer and caps. I am going to try my big honking caps. If they need bypass, I will do so. I have the SS fets now( Thanks Tea) and will b using an ADC transformer and a BudP Onetics version as well. Guess we will see. I am excited, don't know about anybody else.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 31st August 2012, 02:48 PM   #1334
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
I already told ya - I like Romance



so - if ya need any help , or just feel lack of mocking , just buzz

__________________
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 August 2012, 02:59 PM   #1335
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
I know in all that I do, you will be there to laugh along with or at me
__________________
...Shape the sound , Man!
  Reply With Quote
Old 31st August 2012, 03:58 PM   #1336
diyAudio Member
 
Join Date: Jan 2012
Location: Pennsylvania
Blog Entries: 1
Quote:
Originally Posted by wimdehaan View Post
Guido Tent only put it on paper, he never build it. For this reason it was not noticed that the circuit had some minor (but essential) mistakes. I build and tested the 'real' thing using a 5687 tube and an Lundahl interstage transformer.
The underlined suggests a name for the general Classic design which Mr. Pass wrote about in the early posts of the F6 Amplifier thread. It is the "wimdehaan-Tent Circuit". The family name of diyAudio member wimdehaan [like Tent] is not on record.
  Reply With Quote
Old 31st August 2012, 04:04 PM   #1337
diyAudio Member
 
Join Date: Jan 2012
Location: Pennsylvania
Blog Entries: 1
Quote:
Originally Posted by buzzforb View Post
What seems to be true is that the FE and output stage can be top notch without much trouble, but the important components will be the xformer and caps. I am going to try my big honking caps. If they need bypass, I will do so. I have the SS fets now( Thanks Tea) and will b using an ADC transformer and a BudP Onetics version as well. Guess we will see. I am excited, don't know about anybody else.
I share your excitement and will celebrate your success. I am unable to tell which schematic you are using. Maybe in good time!
  Reply With Quote
Old 31st August 2012, 04:09 PM   #1338
Mr. dB is offline Mr. dB  United States
diyAudio Member
 
Mr. dB's Avatar
 
Join Date: Dec 2003
Location: Arkansas
Will there be an F6 Turbo?
  Reply With Quote
Old 31st August 2012, 04:15 PM   #1339
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Quote:
Originally Posted by Mr. dB View Post
Will there be an F6 Turbo?
Scaling the output is pretty straightforward. More rail voltage, more fets. I think ZM suggested the FE could drive about 3 pairs. Of course the FE could be scaled as well.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 31st August 2012, 04:38 PM   #1340
diyAudio Member
 
triode_al's Avatar
 
Join Date: May 2004
Location: Westland
Blog Entries: 1
And of course one can go balanced . . and add another demi-kilowatt
__________________
DAC TDA1541 S1; Kondo post-I/V filter; MC30-Super --> two stage RIAA; Pre: Kaneda ; F5 ; 300B PP ; ESL 57
  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 05:35 PM
Hi Vi F6 box ioro Multi-Way 4 15th April 2012 09:27 PM
Whats happening with F6? jugoslavija Pass Labs 1 1st November 2011 08:39 AM
Hi-Vi F6 kkosiba Multi-Way 14 9th November 2007 09:38 AM
F6 traw Pass Labs 7 2nd November 2007 08:09 PM


New To Site? Need Help?

All times are GMT. The time now is 12:15 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