Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

FirstWatt J2
FirstWatt J2
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 January 2011, 06:20 PM   #571
audiodesign is offline audiodesign  Italy
Banned
 
Join Date: Sep 2005
Send a message via MSN to audiodesign FirstWatt J2
yes, the FirstWatt J2 use a CCS on output stage to fix the current also when temperature increase.
  Reply With Quote
Old 14th January 2011, 06:24 PM   #572
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
FirstWatt J2
nope
__________________
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 14th January 2011, 06:33 PM   #573
Tazzz is offline Tazzz
diyAudio Member
 
Join Date: Jun 2007
Here is all one need to know about the output stage topology used in the J2 in order to make a clone that's close enough to contain the interesting characteristics!

The Good Old Days & More SRPP

(Scroll down to "Even More Impedance-Multiplier Circuitry")
  Reply With Quote
Old 14th January 2011, 06:46 PM   #574
flg is offline flg  United States
diyAudio Member
 
flg's Avatar
 
Join Date: Jul 2005
Location: North East
Quote:
Originally Posted by Zen Mod View Post
let's say just that Mighty ZM measured that

not thoroughly with CCS biasing , but with plain power resistor between PSU and drain

gate was tied to drain , of course

in any case - let them bleed ......... and do not worry too much

Very good ZM! Time to get back to the Circlotron circuit. With JFETs this time...
__________________
"It was the perfect high end audio product: Exotic, inefficient, expensive, unavailable, and toxic." N.P.
  Reply With Quote
Old 14th January 2011, 06:58 PM   #575
bobodioulasso is offline bobodioulasso  Europe
diyAudio Member
 
bobodioulasso's Avatar
 
Join Date: May 2008
Looks like J2 thread is awaking
  Reply With Quote
Old 14th January 2011, 07:42 PM   #576
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
FirstWatt J2
not with me , Bubba

__________________
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 14th January 2011, 09:22 PM   #577
Tazzz is offline Tazzz
diyAudio Member
 
Join Date: Jun 2007
My J2 clone is done and dusted

Last edited by Tazzz; 14th January 2011 at 09:39 PM.
  Reply With Quote
Old 14th January 2011, 09:50 PM   #578
bobodioulasso is offline bobodioulasso  Europe
diyAudio Member
 
bobodioulasso's Avatar
 
Join Date: May 2008
I still need to buy some Sic Jfets first.
Nah, to many amps there.
Need to sell some.
  Reply With Quote
Old 15th January 2011, 09:10 AM   #579
nicoch58 is offline nicoch58  Europe
diyAudio Member
 
Join Date: Oct 2004
bobodioulasso you can gift one to me
  Reply With Quote
Old 15th January 2011, 09:16 PM   #580
bobodioulasso is offline bobodioulasso  Europe
diyAudio Member
 
bobodioulasso's Avatar
 
Join Date: May 2008
Do you want speakers also?
  Reply With Quote

Reply


FirstWatt J2Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
An another way to Firstwatt F1? Idefixes Pass Labs 10 5th July 2017 12:02 PM
Subwoofer and Firstwatt F1 tgrauss Subwoofers 10 3rd June 2009 04:29 PM
Fostex and Firstwatt in car? Ipanema Car Audio 2 11th February 2008 05:32 AM
FirstWatt.com Rory Christ Pass Labs 121 31st May 2004 07:02 PM


New To Site? Need Help?

All times are GMT. The time now is 02:39 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki