Heatsinks from Surplus Store for J2 or F6 - 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 26th December 2012, 11:25 PM   #1
diyAudio Member
 
Join Date: Jan 2008
Location: Southern California
Default Heatsinks from Surplus Store for J2 or F6

I found these two heatsinks at my local surplus store. But no clue what the rating is on these. Also on order are some Semisouth SJEP120R125 so I need to figure out if these heatsinks are large enough for a stereo amp. I am a tube guy and this is my first try at a diy solid state amp. Thinking either on a J2 or a F6. Hopefully by the looks of them it should be ok for either amp. Is this wishful thinking on my part?

Alfredo
Attached Images
File Type: jpg image_2012-12-26_15%253A37.jpg (91.0 KB, 246 views)
File Type: jpg image_2012-12-26_15%253A38.jpg (81.7 KB, 240 views)
  Reply With Quote
Old 27th December 2012, 12:26 AM   #2
6L6 is offline 6L6  United States
diyAudio Member
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
Those will be fine for the amps you are interested in.

Keep calm and carry on.

Post lots of photos!!
  Reply With Quote
Old 27th December 2012, 12:33 AM   #3
flg is offline flg  United States
diyAudio Member
 
flg's Avatar
 
Join Date: Jul 2005
Location: North East
They look great but, Ideally the best way to use them would be to cut them in two vertlcle 6" tall sinks/ch.You always get the best efficeincy without fans etc. when you orient it with verticle fins but unless specifically made for a long configuration (greater space between fins) 6"-8" is all that would be useful with those. I have a similar Fischer model that does 80-90W at about 5.5wx6dx8h.
I might guess you could do about 100-120W without going over 55C on the sink if they were side by side and 6" high. Of coarse YMMV. Maybe there will be a consencus estimate that will get you going
__________________
"It was the perfect high end audio product: Exotic, inefficient, expensive, unavailable, and toxic." N.P.
  Reply With Quote
Old 27th December 2012, 12:51 AM   #4
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
comparable with this :

( as said - best to cut them and mount vertically , connected with L or plate heat spreader )

or - without cutting - simply make tall amp
Attached Images
File Type: gif Fischer SK 108.gif (44.7 KB, 217 views)
__________________
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 27th December 2012, 01:27 AM   #5
diyAudio Member
 
Join Date: Jan 2008
Location: Southern California
Thanks guys. Cutting them may be difficult for me. How about this? V sticking up.
Attached Images
File Type: jpg image_2012-12-26_15%253A37.jpg (97.4 KB, 207 views)
  Reply With Quote
Old 27th December 2012, 02:06 AM   #6
6L6 is offline 6L6  United States
diyAudio Member
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
Those heatsinks are made to have natural convection, and with the proper orientation will be able to get rid of some goodly amounts of heat. If not able to cut them, the best would be to build a tall amp. There are some good examples of it around.
  Reply With Quote
Old 27th December 2012, 03:08 AM   #7
diyAudio Member
 
Andersonix's Avatar
 
Join Date: Jan 2004
Location: Silicon Valley
If you tell a local metal supplier what you need done (cut in half), who knows, they may be able to cut it for a small charge on their stock saw and maybe even clean up the sawcut on a mill, or direct you to a machine shop? Ask around...

A six inch tall amp will be perfect use of them.
  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
FirstWatt J2 Blues Pass Labs 822 23rd June 2014 05:03 PM
First Watt J vs. J2 izzy2 Pass Labs 3 31st March 2012 02:38 PM
The Surplus Store Headphone Amp aerius Headphone Systems 4 24th September 2006 04:05 PM
any surplus store in/around chicago? nt diamdiam Parts 1 29th April 2003 03:43 PM
Site for surplus Heatsinks etc colin.hepburn2 Parts 4 3rd March 2003 07:30 PM


New To Site? Need Help?

All times are GMT. The time now is 10:58 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