Power from Aleph-X with 4 Output Devices Per Channel

Jean · 5th January 2004, 06:19 AM

Quick question , how much power can I get out of aleph x with only 4 devices with R-Theta 11x11 heatsinks and proper power supply ?

thanks.

dshortt9 · 5th January 2004, 04:43 PM

You can figure the power with this easy spreadsheet. Here is the link http://www.diyaudio.com/forums/showt...066#post101066

Jean · 6th January 2004, 07:01 AM

Quote:

Originally posted by dshortt9
You can figure the power with this easy spreadsheet. Here is the link http://www.diyaudio.com/forums/showt...066#post101066

I tried, but then there is another spreadsheet too. How much power can a single irpf244 handle , in terms of heat ? I just haven't seen anyone post final results. I am trying to get an idea if its worth it to build a pair or not on top of the pair of aleph 2s that I am building. My speakers aren't that efficient, if i could get about 50 watts per channel w/o adding more output devices then i'll go ahead and build a pair

joke · 6th January 2004, 11:39 AM

Hi Jean...
As I can remember Mr. Pass use up to 25W per mosfet ...
Here is another spreadsheat

Josip

Tazzy · 6th January 2004, 05:27 PM

ALEPH-XMM - The Mini-Monster

Kristijan says his not-so-mini-monster is good for 65watts of power and uses 4x IRFP240

Nelson Pass · 6th January 2004, 06:14 PM

I have taken IRFP240's to 50 watts continuous dissipation
and quite hot without failure, but I would not do it in
production quantities. 25 watts is my usual limit, but some
of our stuff runs at half of that.

Jean · 6th January 2004, 10:41 PM

Thank you guys! Looks like its a go on Aleph X pair, ordering parts.

5th January 2004, 06:19 AM	#1
Jean diyAudio Member Join Date: Mar 2002 Location: Sacramento, CA	Quick question , how much power can I get out of aleph x with only 4 devices with R-Theta 11x11 heatsinks and proper power supply ? thanks. __________________ left lane is for passing, slower traffic keep right please.

5th January 2004, 04:43 PM	#2
dshortt9 diyAudio Member Join Date: Apr 2001 Location: Milwaukee, Wisconsin	Aleph X spreadsheet You can figure the power with this easy spreadsheet. Here is the link http://www.diyaudio.com/forums/showt...066#post101066

6th January 2004, 10:41 PM	#7
Jean diyAudio Member Join Date: Mar 2002 Location: Sacramento, CA	Thank you guys! Looks like its a go on Aleph X pair, ordering parts. __________________ left lane is for passing, slower traffic keep right please.

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6th January 2004, 05:27 PM	#5
Tazzy diyAudio Member Join Date: Jul 2002 Location: Netherlands	ALEPH-XMM - The Mini-Monster Kristijan says his not-so-mini-monster is good for 65watts of power and uses 4x IRFP240

6th January 2004, 06:14 PM	#6
Nelson Pass The one and only Join Date: Mar 2001	I have taken IRFP240's to 50 watts continuous dissipation and quite hot without failure, but I would not do it in production quantities. 25 watts is my usual limit, but some of our stuff runs at half of that.

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