heatsink for aleph 4

slr 5000 · 09:25 AM

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

Luke · 11th October 2009, 10:20 AM

this should help you, same heatsinks, almost same amp.

http://www.users.on.net/~mefinnis/pa...nstruction.htm

slr 5000 · 11th October 2009, 10:37 AM

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

Bill Fuss · 11th October 2009, 12:54 PM

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

slr 5000 · 12th October 2009, 06:50 AM

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

greguar · 22nd September 2010, 01:06 PM

Hi,
the question is: is it nesessary to have one heatsink per channel or each transistor can use his own heatsink?

Thanks

greguar · 23rd September 2010, 10:06 AM

Sorry,
found the answer in the forum
The question is closed

11th October 2009, 09:22 AM	#1
slr 5000 diyAudio Member Join Date: Oct 2007 Location: melbourne	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 09:25 AM.

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11th October 2009, 10:20 AM	#2
Luke diyAudio Member Join Date: Sep 2001 Location: Wellington NZ	this should help you, same heatsinks, almost same amp. http://www.users.on.net/~mefinnis/pa...nstruction.htm

11th October 2009, 10:37 AM	#3
slr 5000 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

11th October 2009, 12:54 PM	#4
Bill Fuss 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

12th October 2009, 06:50 AM	#5
slr 5000 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

22nd September 2010, 01:06 PM	#6
greguar 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

23rd September 2010, 10:06 AM	#7
greguar diyAudio Member Join Date: Sep 2010 Location: Saint-Petersbourg	Sorry, found the answer in the forum The question is closed

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