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.

F5Turbo Illustrated Build Guide
F5Turbo Illustrated Build Guide
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 12th October 2019, 08:31 PM   #581
thompsontechs is online now thompsontechs
diyAudio Member
 
thompsontechs's Avatar
 
Join Date: Sep 2019
Quote:
Originally Posted by 6L6 View Post
Very nicely done!!

Congratulations! You have a very lucky friend.

Make sure you listen to it a home for a while, you know, for “quality control” reasons.

YA, I think a couple months of QC is required! How much should the offset move around when you are playing music?


Thanks for the compliment!



JT
  Reply With Quote
Old 12th October 2019, 08:46 PM   #582
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
F5Turbo Illustrated Build Guide
you can't measure offset while playing ........ eyes and brain are rarely in sync with amp and readout

__________________
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 12th October 2019, 09:33 PM   #583
thompsontechs is online now thompsontechs
diyAudio Member
 
thompsontechs's Avatar
 
Join Date: Sep 2019
Quote:
Originally Posted by Zen Mod View Post
you can't measure offset while playing ........ eyes and brain are rarely in sync with amp and readout


I wasn't so much measuring it as looking at the way it reacts when music is playing. Okay, I was measuring/monitoring it.
It really does sound great, I haven't hooked it up to my main speakers. Highly modded Tekton DI and PAP Horn1s. I figured if it blew or DCed my drivers, it will be an old pair of Fluance and not the 8k Horns lmao.



It's more a thing, of wanting to know if this is a normal condition.

Last edited by thompsontechs; 12th October 2019 at 09:57 PM.
  Reply With Quote
Old 12th October 2019, 09:37 PM   #584
6L6 is offline 6L6  United States
diyAudio Moderator
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
F5Turbo Illustrated Build Guide
Yes, offset does move with a signal, so don't worry about it.
  Reply With Quote
Old 12th October 2019, 09:59 PM   #585
thompsontechs is online now thompsontechs
diyAudio Member
 
thompsontechs's Avatar
 
Join Date: Sep 2019
Quote:
Originally Posted by 6L6 View Post
Yes, offset does move with a signal, so don't worry about it.

Roger that, and thanks.
  Reply With Quote
Old 12th November 2019, 01:51 AM   #586
airborne11b is offline airborne11b  United States
diyAudio Member
 
Join Date: Jun 2019
Noob here. Can anyone give me the lowdown on matching FETs for a F5T v3? I have ordered a matched quad JFET set from the store but I still need the 8 - Bipolar and 16 - MOSFETS. i read in the First Watt article that the bipolars are not critical but have not read much about the necessity of matching the MOSFETS.
  Reply With Quote
Old 17th November 2019, 12:50 AM   #587
WKCox is offline WKCox  United States
diyAudio Member
 
WKCox's Avatar
 
Join Date: Mar 2004
Location: Wisconsin
F5Turbo Illustrated Build Guide
Quote:
Originally Posted by airborne11b View Post
Noob here. Can anyone give me the lowdown on matching FETs for a F5T v3? I have ordered a matched quad JFET set from the store but I still need the 8 - Bipolar and 16 - MOSFETS. i read in the First Watt article that the bipolars are not critical but have not read much about the necessity of matching the MOSFETS.
Nelson's MOSFET matching tutorial from the First Watt website:
http://www.firstwatt.com/pdf/art_matching.pdf

Reliable eBay seller for matched MOSFETs here:
IRFP240 / IRFP9240 Complementary Matched Groups | eBay
__________________
Pass F5, M2x, ACA, B1, B1 Korg; Audio Research ST-70-C3; Dynaco ST-35; Audio Electronic Supply SE-1; Elekit TU-8500; Hagerman Bugle; Scan-Speak Solist MTM; Selah SA-1; Seas Loki; Cavalli eXStatA; Millett Hybrid MAX, Hybrid MiniMAX
  Reply With Quote
Old 17th November 2019, 01:16 AM   #588
coolnose is online now coolnose  Europe
diyAudio Member
 
coolnose's Avatar
 
Join Date: Sep 2009
Quote:
Originally Posted by airborne11b View Post
Noob here. Can anyone give me the lowdown on matching FETs for a F5T v3? I have ordered a matched quad JFET set from the store but I still need the 8 - Bipolar and 16 - MOSFETS. i read in the First Watt article that the bipolars are not critical but have not read much about the necessity of matching the MOSFETS.
You might want to contact our member "h_a" before reaching out to ebay or other as well...
  Reply With Quote
Old 17th November 2019, 01:29 AM   #589
coolnose is online now coolnose  Europe
diyAudio Member
 
coolnose's Avatar
 
Join Date: Sep 2009
Quote:
Originally Posted by airborne11b View Post
Noob here. Can anyone give me the lowdown on matching FETs for a F5T v3? I have ordered a matched quad JFET set from the store but I still need the 8 - Bipolar and 16 - MOSFETS. i read in the First Watt article that the bipolars are not critical but have not read much about the necessity of matching the MOSFETS.
You might want to contact our member "h_a" before reaching out to ebay or other as well...
  Reply With Quote

Reply


F5Turbo Illustrated Build GuideHide 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
Aleph J illustrated build guide 6L6 Pass Labs 4414 Today 07:22 PM
diyAudio Power Supply Circuit Board v3 illustrated build guide 6L6 Power Supplies 1092 11th December 2019 02:35 AM
An illustrated guide to building an F5 6L6 Pass Labs 1220 24th November 2019 10:29 PM
ACA illustrated build guide 6L6 Pass Labs 165 30th October 2019 08:11 AM
Illustrated guide to the 4U deluxe Chassis 6L6 Pass Labs 3 16th November 2013 05:32 PM


New To Site? Need Help?

All times are GMT. The time now is 08:00 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki