WTB big heatsinks

elviukai · 3rd December 2006, 06:03 PM

prefered in EU but will consider any location. heatsink(s) should dissipate arround 700-800W and lift T arround 30-35C'

also can cosnsider trade to some parts I will not use in nearest future(Black gate caps, siemens.epcos sikorel caps etc, 4pieces 1400W 2.18V toroids etc.)

thanks in advance

Tolik · 24th March 2007, 08:15 AM

Quote:

dissipate arround 700-800W and lift T arround 30-35C'

U will need heatsinks with termal resistance maximum 0.05 C -almost impossible without forced fan cooling
But look here

elviukai · 24th March 2007, 09:38 AM

everything is possible.imposible just takes slightly much time to achieve ;-)

biggest fisher heatsinks (4 pieces 250x300mm base 20mm) are able to dissipate only 400-500wats
lastly I builded heatsinks myself.
2x 220x 640 ,base 30mm , fins 6mm.) they dissipate 650W and rise t above ambient 27-30C with no problem.

Tolik · 24th March 2007, 10:19 AM

Quote:

biggest fisher heatsinks (4 pieces 250x300mm base 20mm)

1 . I used world ``ALMOST``
2. Look at this

Tolik · 24th March 2007, 10:19 AM

I saw that u tryed to build some extreme class A amp.
Now I trying to choose good cap`s for my 2x300W SKA by Greg Ball.
Can u to share some u expirience ?
I looking on Mundorf HC, Erovox ALS30, Epcos B41456B9479M...

gugi100 · 24th March 2007, 10:47 AM

Hallo,

Perhaps this is something for you.

http://www.deltourheatsinks.nl/printView.php?id=36

Gr GJ

KBK · 24th March 2007, 03:11 PM

this is by far, the best place to get amplifier heatsinks. This guy runs the foundry/extrusion system on his own on the weekends, etc. Makes his own extrusion dies, he's a millworker, etc.

http://cgi.ebay.com/HEATSINK-ALUMINU...QQcmdZViewItem

I'm not sure anyone can beat his quality and prices.

Spasticteapot · 24th March 2007, 03:37 PM

Ever considered watercooling?

elviukai · 24th March 2007, 06:34 PM

Quote:

Originally posted by Tolik
I saw that u tryed to build some extreme class A amp.
Now I trying to choose good cap`s for my 2x300W SKA by Greg Ball.
Can u to share some u expirience ?
I looking on Mundorf HC, Erovox ALS30, Epcos B41456B9479M...

You can read about variuos caps types and sound here-

http://highend.projektas.lt/?tipstricks/7

I will ad more caps including bhc aerovox when will have free time.
my advice-do not go with aerovox,unless you likevery smooth and rounded sound. goind from bhc aerovox to siemens sikore is sometheing when you drive 3000kg weight yaguar car with 100kW engine and then go to 300kg mclaren bolide weighting 600kg

speed,accelaration,adrenaline..

Tolik · 12th April 2007, 04:29 PM

Quote:

siemens sikore is sometheing when you drive 3000kg weight yaguar car with 100kW engine and then go to 300kg mclaren bolide weighting 600kg speed,accelaration,adrenaline

Hi ,
Thanks for your replay. I can`t to find any Epcos Sikorel series caps in retail stores. Dealers of Epcos are selling them by 12 units box only, and I can`t to spent 500 Euro for caps only

.
What you think about Epcos B41456 / B41460 series 47000uF/100v...
Or Mundorf HC better alternative ?

3rd December 2006, 06:03 PM	#1
elviukai diyAudio Member Join Date: Apr 2003 Location: EU- Electronic Union country	WTB big heatsinks prefered in EU but will consider any location. heatsink(s) should dissipate arround 700-800W and lift T arround 30-35C' also can cosnsider trade to some parts I will not use in nearest future(Black gate caps, siemens.epcos sikorel caps etc, 4pieces 1400W 2.18V toroids etc.) thanks in advance __________________ natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..

24th March 2007, 09:38 AM	#3
elviukai diyAudio Member Join Date: Apr 2003 Location: EU- Electronic Union country	everything is possible.imposible just takes slightly much time to achieve ;-) biggest fisher heatsinks (4 pieces 250x300mm base 20mm) are able to dissipate only 400-500wats lastly I builded heatsinks myself. 2x 220x 640 ,base 30mm , fins 6mm.) they dissipate 650W and rise t above ambient 27-30C with no problem. __________________ natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..

24th March 2007, 03:11 PM	#7
KBK diyAudio Member Join Date: Dec 2003 Location: The Wilds Of Canada	this is by far, the best place to get amplifier heatsinks. This guy runs the foundry/extrusion system on his own on the weekends, etc. Makes his own extrusion dies, he's a millworker, etc. http://cgi.ebay.com/HEATSINK-ALUMINU...QQcmdZViewItem I'm not sure anyone can beat his quality and prices. __________________ "Never forget that only dead fish swim with the stream." -- Malcolm Muggeridge. "Truth cannot be brought down, rather the individual must make the effort to ascend to it." -- Jiddu Krishnamurti

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24th March 2007, 10:19 AM	#5
Tolik diyAudio Member Join Date: Mar 2007	I saw that u tryed to build some extreme class A amp. Now I trying to choose good cap`s for my 2x300W SKA by Greg Ball. Can u to share some u expirience ? I looking on Mundorf HC, Erovox ALS30, Epcos B41456B9479M...

24th March 2007, 10:47 AM	#6
gugi100 diyAudio Member Join Date: Jun 2004 Location: IJsselstein	Hallo, Perhaps this is something for you. http://www.deltourheatsinks.nl/printView.php?id=36 Gr GJ

24th March 2007, 03:37 PM	#8
Spasticteapot diyAudio Member Join Date: Jan 2006 Location: Wisconsin....what did you expect?	Ever considered watercooling?

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