heatsink for aleph 4 - 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 11th October 2009, 08:22 AM   #1
diyAudio Member
 
Join Date: Oct 2007
Location: melbourne
Default heatsink for aleph 4

hi all
im in the process of nocking up an aleph 4 and just want some oppinions on my heatsinks

im using 4x conrad 350mm x 151mm sinks per monoblock
they will be setup so the sinks form the sides front and back of the monoblocks and will be screwed to each other the same as the original pass designs

im using the brian gt boards so each sink will take 3x irfp 240

each sink is rated at .21w for 80 degree c rise

regards sheafer

Last edited by slr 5000; 11th October 2009 at 08:25 AM.
  Reply With Quote
Old 11th October 2009, 09:20 AM   #2
Luke is offline Luke  New Zealand
diyAudio Member
 
Join Date: Sep 2001
Location: Wellington NZ
Send a message via AIM to Luke
this should help you, same heatsinks, almost same amp.

http://www.users.on.net/~mefinnis/pa...nstruction.htm
  Reply With Quote
Old 11th October 2009, 09:37 AM   #3
diyAudio Member
 
Join Date: Oct 2007
Location: melbourne
hi mate
thanks for the link
yes these are the sinks but mine are flat backed and are 50mm longer than the ones in the pic so a little more efficient

the aleph 4 i,m building is double the power of the 5 though so im hoping that using 4x per mono block instead of 2x should be enough

regards sheafer
  Reply With Quote
Old 11th October 2009, 11:54 AM   #4
RIP
 
Join Date: Oct 2005
Location: Central Florida
That should work fine, from experience those sinks can easily handle 90W each. I would space the fets out much more than the BrianGT OP boards will let you.

Best, Bill
  Reply With Quote
Old 12th October 2009, 05:50 AM   #5
diyAudio Member
 
Join Date: Oct 2007
Location: melbourne
thanks bill
i thought it should be ok but just wanted to check
4x runs an aleph 5 ok so 8x should be perfect for an aleph 4 as its not quite double an a5 for dissapation

regards sheafer
  Reply With Quote
Old 22nd September 2010, 12:06 PM   #6
greguar is offline greguar  Russian Federation
diyAudio Member
 
Join Date: Sep 2010
Location: Saint-Petersbourg
Hi,
the question is: is it nesessary to have one heatsink per channel or each transistor can use his own heatsink?

Thanks
  Reply With Quote
Old 23rd September 2010, 09:06 AM   #7
greguar is offline greguar  Russian Federation
diyAudio Member
 
Join Date: Sep 2010
Location: Saint-Petersbourg
Sorry,
found the answer in the forum
The question is closed
  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
Heatsink for the Aleph 1.2 folkeb Pass Labs 1 23rd January 2006 03:27 AM
Yet another heatsink question for Aleph 2s Jean Pass Labs 7 28th January 2005 03:45 AM
Aleph's Heatsink ruangrit Pass Labs 4 1st February 2004 03:29 PM
My aleph 2 heatsink MEGA_amp Pass Labs 12 30th January 2004 10:35 AM
Aleph 3 heatsink question garnex Pass Labs 2 12th December 2002 06:12 PM


New To Site? Need Help?

All times are GMT. The time now is 02:35 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