F5 power amplifier - Page 1561 - 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 17th June 2017, 05:56 PM   #15601
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
The F5 design was released to DIYers when production ceased, and
it's fine with me if people want to generate their own artwork.

The IP involved is simply copyright.

There are pc boards available in the store.
  Reply With Quote
Old 17th June 2017, 06:26 PM   #15602
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
Blog Entries: 2
Quote:
Originally Posted by peafarmer View Post
Pico, I'm using the Peter Daniels boards. I might be sqeamish, but the boards are so small that I'm not really looking forward to de-soldering. I might just splice in a 12K like 6L6 did for his bias resistors, though. Thanks, guys! Andy
Alternatively just remove the current limiters altogether.
I personally never bother with them.
__________________
"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 17th June 2017, 10:04 PM   #15603
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
I have a nice one where all that stuff is gone, including the Source resistors.

Takes a short while to warm up...
  Reply With Quote
Old 18th June 2017, 04:11 AM   #15604
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
Blog Entries: 2
Me too.


I tweak the source resistors on the input jfets to get around 0.025% 2nd Harmonic on the distortion analyzer.
Extremely bloody good amp like this.
__________________
"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

Last edited by 2 picoDumbs; 18th June 2017 at 04:25 AM.
  Reply With Quote
Old 18th June 2017, 04:30 AM   #15605
Hikari1 is offline Hikari1  United States
diyAudio Member
 
Join Date: Jun 2012
Location: Seattle
If I want to take out the current limiting can I simply cut the a resitor lead from r21/r22? My f5 is built with current limiting and its much easier to just snip a resistor lead while it's in the amp instead of taking about the boards and removing the resitors and ZTX devices.
Attached Images
File Type: jpg np_f5_fig06.jpg (124.3 KB, 227 views)
  Reply With Quote
Old 18th June 2017, 04:43 AM   #15606
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
Blog Entries: 2
snip ztx450/550, r17, r18, r19, r20, r21, r22.
__________________
"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 18th June 2017, 05:52 PM   #15607
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Unless you are committed permanently, it is adequate to simply remove
the ZTX parts.
  Reply With Quote
Old 21st June 2017, 08:48 PM   #15608
Hikari1 is offline Hikari1  United States
diyAudio Member
 
Join Date: Jun 2012
Location: Seattle
Thanks for the advice and the amp, Nelson.
  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
Rockford Fosgate Power 20001 bd amplifier power rating?? pachoorion Car Audio 8 8th May 2011 10:49 PM
Power transformers versus amplifier output power..what is your option? destroyer X Solid State 38 9th May 2009 05:23 PM
McIntosh Power Amplifier Power Guard johnnyrt Solid State 2 23rd August 2007 10:22 PM
Output power for a power amplifier Progg70 Solid State 33 10th September 2006 08:44 AM
Amplifier 3000 Wats Rms Power + Smps Higcht Power Bestiality MARAVILLASAUDIO Class D 1 5th November 2004 04:06 PM


New To Site? Need Help?

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


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