Peter Daniel said:
Ah, but at least in the winter you can turn down the heat
a bit when the amps are running. 🙂
Dennis
(Still hoping to build a frugal Aleph-X)
grataku said:about the XA manual:
However, when I turn around and buy $300 worth of heatsinks she becomes confused, upset, and hurt.
I could see how that would be a problem. 😀
Speaking of heatsinks, has anyone found a good place to buy heatsinks. mmmetals has some, but the good profiles are only available for large orders, since they just sell stock on hand for small orders.
It would be nice to organize a group buy of heatsinks, since the group buy for pcbs was soo big.
Any suggestions on where to obtain heatsinks?
--
Brian
Brian, the only heatsinks that IMO would be worth messing with are Peter's R-Theta, that is simply the best profile, it comes anodized and all finished up and ready to go. Unfortunately they cost $$$mucho dinero$$$. I wonder if a mass order would bring the price down some.
Dennis, I went there yesterday and bought last six. I can sell you 2 if you are interested. It's still more than enough for stereo amp.
grataku said:
I also agree that those are the best heatsinks around. If you guys are interested, I can organize a group purchase, since I'm looking for heatsinks as well. Just let me know. A piece 11" x 11" anodized black was CAD100. For you, living in States it's peanuts. With a group purchse the price would drop down probably.
cocolino said:
Cocolino, I do sincerely hope she isn't looking over your shoulder... or secretely checking all your posts!
Otherwise
Marc
Peter Daniel said:
I'm definitely interested. My friend who wants to build the
2 ohm Aleph-X's will need serious heatsinks as well.
Which R-theta profile is it, BTW?
Dennis
Peter Daniel said:
If a group purchase for these is organized, I would like to purchase 4, maybe more if the price drops. Can you see if you can get prices for a large group order?
It appears to be the same as this extension from Aavid:
http://www.aavidthermalloy.com/bin/exdisp.pl?Pnum=65340&LengthUnits=in&ExLength=11&airflow=57.2
--
Brian
What is the size you are looking for? My amp's rails are 15V and 6A total current (per channel) and two 11" x 11" heat sinks per channel are just about right.
Peter Daniel said:
11" x 11" seems like a perfect size. They look a lot nicer then the mmmetals heatsinks.
--
Brian
Peter Daniel said:
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
Hi Peter.
Do you have some spare-one 😉 it may be my next project after A4 is finished.
Trigon.
🙂
Do you have some spare-one 😉 it may be my next project after A4 is finished.
Trigon.
🙂