The Aleph-X

[harvardian]

Heat sinks

I'm on a heat sink buying binge. Stop me...

Peter,

I would be in for at least 4 as well.

Best Regards,

Dale

 

[Peter Daniel]

My estimate is that we would be ordering at least 100 heat sinks. Price should be good.😉

 

[1/137]

I too am interested in at least 4...and if this interview in San Diego 12/13 gets me employed I'll probably want 8!
rt

 

[BrianGT]

My estimate is that we would be ordering at least 100 heat sinks. Price should be good.😉

Well, see if you can find out how much 100 of them costs, then it can be worked out from there. 😛

--
Brian

 

[roddyama]

Re: Re: irfp240 good for alehp x?

They should work just fine. I am using them for the Aleph-X that I am currently building.

--
Brian

Brian,

Are you stealing the IRFP 240’s from your Aleph 2 or did you get more?😀

Rodd Yamashita

 

[BrianGT]

Re: Re: Re: irfp240 good for alehp x?

Brian,

Are you stealing the IRFP 240’s from your Aleph 2 or did you get more?😀

Rodd Yamashita

Exactly... my two Aleph 2 chassis and IRFP240s are now becoming one stereo aleph 5, and one stereo aleph-x... If I decide that I need a more powerful Aleph-X, then I will just ditch the Aleph 5... I have the boards mostly done, and the transformers, but I haven't decided what I am using for capacitors yet. I got my Aleph 2 transformers reworked to 4x12.5 and 4x15, both 1kVA also.



--
Brian

 

[john-china]

about heatsink

maybe this information is useful to some guys
in china the heatsink (30*35*5cm) is $45 , RMB450yuan.
some rough stuff has even lower price. only $30.
but it is also expensive to chinese. maybe it is so cheap to outside china.
for building alpeh-x , i bought 8 pieces of heatsink , all cost my
salary of one month. but i think i will forget this after
completing aleph-x.😀
specially thank BrianGT for your pcb file.

 

[Andypairo]

Oh yeah!!

For Europeans I recommend using the one that I used for my Zen R but in 100 mm length which is KS300.6 from Austerlitz which reaches 0.3 C/W already at 100 mm length and has slightly longer fins than the R-Theta. If you like 9" then KS216 from Austerlitz which is the same as SK 102 from Fischer is almost the same measures as the R-theta:

http://www.fischerelektronik.de/_2002/PDF/Einzel_PDF/A_40.pdf
http://www.elfa.se/pdf/75/07562267.pdf
http://www.austerlitz-electronic.de/gb2/kkfrkon.htm


/UrSv

Really thank you😉

You made me realize how lucky I have been..
Just got 2 of these KS300.6 for FREE😎 400 mm long each!!

I'm jumping on my chair for happiness... maybe I'll be able to make some photos in a few days..

Cheers

Andypairo

 

[Eric]

Heatsink group purchase

Depending upon the price, I too would be interested in a set of 4 of those heatsinks to go with my new Aleph-X boards...

Eric

 

[Peter Daniel]

For anybody interested, this is the heat sink thread: http://www.diyaudio.com/forums/showthread.php?s=&postid=94154#post94154

 

[diyman]

Mosfets

For those who are still looking for the IRFP044, these are available from RS Components at a very reasonable price.

ckt

 

[Nelson Pass]

Digressing slightly, now that a lot of the crap has died
down, it's time to convince Grey Rollins to come back.

 

[cocolino]

Digressing slightly, now that a lot of the crap has died down, it's time to convince Grey Rollins to come back.

Digressing? Not at all!
All about the DIY Aleph-X began with Mr. Rollins and without him (and of course You Mr. Pass and all the other great guys which have contributed so much ) all this could not have happened.
Yes, please come back Mr. Rollins!!

 

[carpenter]

I certainly have missed Grey's input.......

I hope to devour more of your ideas some day, Grey. In the mean time, just know that you have sent a great many of us off to a most excellent adventure! Because of your efforts, I've greatly expanded my awareness in audio electronics.

John

 

[Peter Daniel]

Grey Rollins

At least we should send him a set of boards for Aleph X.

Grataku, what do you think? 😉

 

[grataku]

I was just going to schmooze up to Nelson a little, but now that you mention it Grey should have a pair of boards as well. Does anyone know his address? I'll send him an email. I'll ruin the surprise.

 

[Nelson Pass]

Nice thought, but I have no need of boards.

I do want Grey back, however.

 

[lohk]

Yes I do want Grey back too.
I - although sometimes had an argument with with him - always liked his personal posts, insightful and sometimes over the top with philosophy, literature etc. Great.
And he btw. wrote longer posts than you, Nelson...

Klaus

 

[grataku]

That takes care of that.

 

[BrianGT]

I miss Grey. I hope that he decides to come back sometime soon. Without him, we wouldn't have this thread.

--
Brian