Does this look like enough heatsink? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 29th January 2007, 05:05 AM   #1
diyAudio Member
 
Join Date: Nov 2005
Default Does this look like enough heatsink?

Click the image to open in full size.

The chips are bolted to the plate you see with RCAs and binding posts.

It is just cheap sheet metal from Ace.

Should I some how add more heatsink?

It does get hot with only under a minute of play time. Not so hot I can not touch it, but hot.

This is sort of project use everything laying around.
  Reply With Quote
Old 29th January 2007, 05:27 AM   #2
diyAudio Member
 
Join Date: Nov 2005
Oh yeah it is a 330va 25v transformer being used, into 8 ohm speakers.
  Reply With Quote
Old 29th January 2007, 05:43 AM   #3
diyAudio Member
 
Join Date: Mar 2004
Location: Arkansas
I smell smoke!
__________________
Writing is good exercize for the texticles!
  Reply With Quote
Old 29th January 2007, 06:12 AM   #4
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
Not a chance in hell....
A nice 2.5C/W heatsink may set you back $5....
  Reply With Quote
Old 29th January 2007, 06:13 AM   #5
mateo88 is offline mateo88  United States
diyAudio Member
 
Join Date: May 2004
Location: Argyle, Texas
What chip? Is that 25v single supply or is it two 25v rails?
  Reply With Quote
Old 29th January 2007, 06:49 AM   #6
diyAudio Member
 
I_Forgot's Avatar
 
Join Date: Jan 2005
Location: Phoenix, Az.
Everything lasts longer and works better at lower temperatures. If it gets any more than slightly warm, it's too hot. Surplus heat sinks are cheap. Get a couple of them.

I_F
  Reply With Quote
Old 29th January 2007, 06:51 AM   #7
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
I'm glad I upgraded my heatsinks... we had a 40C day in the week... went to feel the sinks... they were HAWT...
  Reply With Quote
Old 29th January 2007, 07:06 AM   #8
diyAudio Member
 
Join Date: Nov 2005
I added some heat sinks but I fear they are not enough.

Damnit I want this done in a day. Where can I buy local heatsinks?

25v per channel before recitifcation. 3875 chips
  Reply With Quote
Old 29th January 2007, 07:23 AM   #9
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
Default Re: Does this look like enough heatsink?

Quote:
Originally posted by Destroyer OS.
Click the image to open in full size.

The chips are bolted to the plate you see with RCAs and binding posts.

It is just cheap sheet metal from Ace.

Should I some how add more heatsink?

It does get hot with only under a minute of play time. Not so hot I can not touch it, but hot.

This is sort of project use everything laying around.

If you can touch it for 10 secs or more (really touch, not touch-and-go) you're OK. It means <50 degrees heatsink.

Jan Didden
__________________
If you don't change your beliefs, your life will be like this forever. Is that good news? - W. S. Maugham
Check out Linear Audio!
  Reply With Quote
Old 29th January 2007, 03:43 PM   #10
CarlosT is offline CarlosT  United States
diyAudio Member
 
Join Date: Oct 2006
Nice butch project

You got a perfect opportunity there to bolt something to the outside... go to a scrap yard and look for a piece of copper or something...heck...even bonding some 1/2" copper tubing pieces vertically from the Home Depot would help.

I was thinking that mixing metal powder with regular silicone caulk would make a decent DIY adhesive for a "heatsink"...you know...in the spirit of the butch look and all
  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... Lewis Moon Chip Amps 8 26th November 2008 08:22 PM
One heatsink for each mos ? pa Pass Labs 3 1st April 2002 11:29 PM


New To Site? Need Help?

All times are GMT. The time now is 12:13 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