Pictures of your diy Pass amplifier - Page 53

tinitus · 16th January 2011, 10:09 PM

Quote:

Originally Posted by bobodioulasso

Very nice!

Aren't those heatsinks intended for air forced kooling?

actiually, I think they are optimal convection type

bobodioulasso · 17th January 2011, 06:13 AM

Never tried but enourmous dissipation capability with silent squirrel's cage fans.

Bakmeel · 17th January 2011, 08:47 PM

Can't stay behind on this thread...

This is my Aleph 2, finished in summer 2009 after a 5-year build.
Build Thread HERE.

Thanks Nelson! They sound great!

Marra · 17th January 2011, 09:14 PM

Quote:

Originally Posted by Bakmeel

Can't stay behind on this thread...

This is my Aleph 2, finished in summer 2009 after a 5-year build.
Build Thread HERE.

Thanks Nelson! They sound great!

Wow; such skill!!

tl.aus.e · 17th January 2011, 09:18 PM

Quote:

Originally Posted by bobodioulasso

Never tried but enourmous dissipation capability with silent squirrel's cage fans.

This is the thermal resistance of the heatsink for 5 m/s (!) airflow: 0.035 K/W.
With 1 m/s airflow, which is more realistic to tolerate in a living room situation I would expect 0.07 K/W

ra7 · 17th January 2011, 09:22 PM

Thats got to go in PassDIY hall of fame!

6L6 · 21st January 2011, 02:09 AM

My B1 -

Lots more info and photos here -- B1 preamp build thread

Dodger66 · 25th January 2011, 11:44 PM

Quote:

Originally Posted by Bakmeel

Can't stay behind on this thread...

This is my Aleph 2, finished in summer 2009 after a 5-year build.
Build Thread HERE.

Thanks Nelson! They sound great!

That is some fine skill!

I am so jellous

a.wayne · 30th January 2011, 02:12 AM

Quote:

Originally Posted by bobodioulasso

Heat issue too.
Of course the bass amp have to meet the requirements, but classA is a waste of money and energy.
Just my opinion.

Quote:

Originally Posted by regiregi22

So you confirm that it is, in fact, just an economy issue.

Congratulations Bill, your's is one of the most sexy F5 amps that has appeared around here...IMHO

Maybe on the F5 it works better for it to be in Class-a, from experience with other amplifiers, this is not the case and full class-a tend not to have the life exhibited by a good a/ab amplifier. class-A can be smooth, but dead by comparison.

Nikon1975 · 30th January 2011, 07:35 AM

Now it is really finish. The first amp the even my wife can use :-)

(well, it is solidly connected to a DAC with output caps and delay circuit, so no issues, at least on the input)

I think I will drill some holes in the shape of F5 on the top for ventilation. Now is kind of sealed, although the temperature inside is around 50 C.

I also think I will have to put a bumper on the edges, if I do not want my son to have the heatsink imprinted in his forehead sooner or later :-) (But this would be temporary)

D.

21st January 2011, 02:09 AM	#527
6L6 diyAudio Member Join Date: Oct 2010 Location: Denver, Colorado	My B1 - Lots more info and photos here -- B1 preamp build thread __________________ llustrated Build Guides - Pass Pearl 1 - Pass B1 - - Pass F5 - Pearl 2 - -O2 HPA - - Pass F4

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17th January 2011, 06:13 AM	#522
bobodioulasso diyAudio Member Join Date: May 2008	Never tried but enourmous dissipation capability with silent squirrel's cage fans.

17th January 2011, 09:22 PM	#526
ra7 diyAudio Member Join Date: Feb 2009 Blog Entries: 1	Thats got to go in PassDIY hall of fame!

30th January 2011, 07:35 AM	#530
Nikon1975 diyAudio Member Join Date: Nov 2009 Location: Vienna	Now it is really finish. The first amp the even my wife can use :-) (well, it is solidly connected to a DAC with output caps and delay circuit, so no issues, at least on the input) I think I will drill some holes in the shape of F5 on the top for ventilation. Now is kind of sealed, although the temperature inside is around 50 C. I also think I will have to put a bumper on the edges, if I do not want my son to have the heatsink imprinted in his forehead sooner or later :-) (But this would be temporary) D.