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 14th April 2013, 09:39 PM   #1751
Rush is offline Rush  United States
diyAudio Member
 
Join Date: Sep 2009
Location: Tampa, Florida
Quote:
Originally Posted by buzzforb View Post
Here ya to V3. No diodes, but overal bias higher than my V2. No miller compensation cap for instability. No heavy testing, but small stuff checks out fine.
Buzz,

Where did you get that heatsink?

Rush
  Reply With Quote
Old 14th April 2013, 09:49 PM   #1752
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Made from Heatsink USA 10.08 profile, cut down and joined together.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 14th April 2013, 10:32 PM   #1753
Rush is offline Rush  United States
diyAudio Member
 
Join Date: Sep 2009
Location: Tampa, Florida
Quote:
Originally Posted by buzzforb View Post
Made from Heatsink USA 10.08 profile, cut down and joined together.
You had it welded and ground flat?

Rush
  Reply With Quote
Old 14th April 2013, 10:46 PM   #1754
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Nope. Look close.
Attached Images
File Type: jpg image.jpg (217.2 KB, 285 views)
__________________
...Shape the sound , Man!
  Reply With Quote
Old 14th April 2013, 10:49 PM   #1755
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 7
Quote:
Originally Posted by buzzforb View Post
Made from Heatsink USA 10.08 profile, cut down and joined together.
Did that guy cut them for you?
__________________
Salas Boards 2014 #1 Boards shipping |F5TC board and power supplies available PM | DCB1 boards and kits available PM
  Reply With Quote
Old 14th April 2013, 11:03 PM   #1756
nrg2009 is offline nrg2009  United States
diyAudio Member
 
Join Date: Apr 2009
Location: Detroit, born and raised in the netherlands.
Those sinks look very nicely joint together.
Do they anodize them at all? They are a company out of michigan, close by where i live.
  Reply With Quote
Old 14th April 2013, 11:22 PM   #1757
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Nope, but they will. Just have to give them a cut diagram. I have tools that I can do it with. I asked him about anodizing, but there is a $300 minimum. Next bacth I order, I will pay to have them tap the holes. I hate tapping holes and I alwys go all the way through. Hidden tap is much more difficult. Rather than buy the tools I am going to see how much it cost. Funny^6 sinks enclosure will be dual monoblocks with single heatsink, like ACA. THE BAX will be monblocks with dual 8" tall, 18" deep.
__________________
...Shape the sound , Man!
  Reply With Quote
Old 15th April 2013, 12:27 AM   #1758
Lo_Tse is offline Lo_Tse  Canada
diyAudio Member
 
Join Date: Dec 2006
Quote:
Originally Posted by buzzforb View Post
Here ya to V3. No diodes, but overal bias higher than my V2. No miller compensation cap for instability. No heavy testing, but small stuff checks out fine.
Buzz,

Looking good. How big is that heat sink? Looked like you you have one channel's worth of output FETs (8) on it.

Regards,
  Reply With Quote
Old 15th April 2013, 12:35 AM   #1759
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
It is 6" tall by 18" deep. The layout of Tea's boards limits its abilties, but that is the only issue. I like the compact and clean layout. This amp will go head to head with BA3B. Whoever wins gets its own new set of sinks sized just right. The sinks in the pica are being pushed 187watts, dissipation. If spread out, they would be fine. Now they are hot to touch at 5 seconds during full on play. Kids cut temp probe and temp gun is on fritz(spilled milk, literally)
__________________
...Shape the sound , Man!
  Reply With Quote
Old 15th April 2013, 01:23 AM   #1760
diyAudio Member
 
duder1982's Avatar
 
Join Date: Jan 2012
Location: Nebraska
2 questions,

First is there a difference in having the heat fins running vertically or horizontally.

Second would 2 of the 8.4" profile heat sinks from heatsink usa at 8.5" together so making a 8.5" by 17" heat sink be enough for f5t v1 or v2.
__________________
If I cant build it or fix it I really dont want it.
  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
F5 Turbo is posted Nelson Pass Pass Labs 635 6th April 2014 10:51 AM
B1 builders thread Bas Horneman Pass Labs 694 25th February 2014 06:29 PM
F5 Turbo Circuit Boards chchyong89 Pass Labs 2327 8th January 2014 02:14 PM
F5 turbo problems Rob Dingen Pass Labs 17 11th January 2013 08:38 PM
F5 Turbo ............. if only !!!!!! a.wayne Pass Labs 23 21st January 2012 02:24 AM


New To Site? Need Help?

All times are GMT. The time now is 11:40 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