F5 power amplifier - Page 1292 - 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 5th February 2013, 08:59 PM   #12911
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
Quote:
Originally Posted by intense-tavda View Post
Hi There!
Teake,

your trimpots fell on their back
I'd check their solder joints, iiwy.
__________________
2015 : World Cup Cat Hacky Sack
  Reply With Quote
Old 5th February 2013, 11:18 PM   #12912
diyAudio Member
 
noSmoking's Avatar
 
Join Date: May 2010
Location: Texas
Hi intense-tavda,
Here's a pic and it's working.2nd pic is better sorry about the first one,
NS
Attached Images
File Type: jpg DSC_4206.jpg (547.2 KB, 541 views)
File Type: jpg DSC_4207.jpg (688.5 KB, 514 views)

Last edited by noSmoking; 5th February 2013 at 11:35 PM. Reason: pic didn't make it
  Reply With Quote
Old 5th February 2013, 11:41 PM   #12913
diyAudio Member
 
noSmoking's Avatar
 
Join Date: May 2010
Location: Texas
Intense-Tavda,
I know those boards all made about the same,so orientation is the same ,You can also pull those trans and measure where the supply voltage pin is then you will know for sure how they go,I hope I have helped some,Good luck!
NS
  Reply With Quote
Old 6th February 2013, 10:22 PM   #12914
WalterW is offline WalterW  Netherlands
diyAudio Member
 
Join Date: Oct 2012
Location: Utrecht
Quote:
Originally Posted by 6L6 View Post
Walter -


Nice work, by the way - neat wiring, good layout, I'm looking forward to seeing more photos of your amp!
Hi 6L6, I posted a lot of pictures in the "pictures of the DIY Pass Amplifier"
  Reply With Quote
Old 21st February 2013, 01:13 PM   #12915
diyAudio Member
 
LucasAdamson's Avatar
 
Join Date: Feb 2009
I have two schematics for the regular old F5, with several differing resistor values. One was from Nelson's original guide, and the second from the DIYAudio board guide. Can somebody explain the evolution please, and which I should follow. I am not an EE, so I can't do better than to follow the best prevailing advice. Thanks
__________________
Lucas
  Reply With Quote
Old 21st February 2013, 01:17 PM   #12916
diyAudio Member
 
LucasAdamson's Avatar
 
Join Date: Feb 2009
R9 is either 1K or 4.75K

R10 is either 100K or 47.5K

R19 & R20 are either 150R or 100R

R13 & R14 are either 47R or 100R

Were these accepted improvements, or what?

Thanks
__________________
Lucas
  Reply With Quote
Old 21st February 2013, 01:51 PM   #12917
6L6 is offline 6L6  United States
diyAudio Member
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
Lucas - are you planning on using a PCB? Which one?

The values from the original Nelson Pass schematic work very well.

Click the image to open in full size.

Last edited by 6L6; 21st February 2013 at 01:55 PM.
  Reply With Quote
Old 21st February 2013, 01:58 PM   #12918
diyAudio Member
 
LucasAdamson's Avatar
 
Join Date: Feb 2009
Well, I have actually populated 2x Peter Daniels boards, but was never happy with them, as I find them far too small and the traces uncomfortably close, not to mention the close spread of the mosfets meaning I will have to extend the connectors, which is not ideal for me and made me feel uncomfortable about it, so I ordered some DIYAudio boards v2. They look much better for me. I was just about to purchase a new set of resistors, when I noticed the differences on the DIYAudio V2 boards build guide, and I see no reference as to why it was changed or indeed who changed the values.
__________________
Lucas
  Reply With Quote
Old 21st February 2013, 02:23 PM   #12919
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
regarding those values - mix them as you want

you'll not hear , or measure difference ( except on very clipping , for R19&R20 , where 100R is value for slightly higher max allowed current )
__________________
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 21st February 2013, 02:26 PM   #12920
diyAudio Member
 
LucasAdamson's Avatar
 
Join Date: Feb 2009
Ah that's great to know. Thanks Zen Mod.
__________________
Lucas
  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 05:44 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