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-   -   Zen 4 heatsinks (http://www.diyaudio.com/forums/pass-labs/5717-zen-4-heatsinks.html)

2Bak 3rd September 2002 09:52 PM

Zen 4 heatsinks
 
Found two old heatsinks, on which I do not have the heat dissipation data.
They measure H x W x D, 220 mm x 200 mm x 70 mm.
Would there be a chance that they are able cool down the Boz 4 @ 2 x 30 watt or 2 x 25 watts?

http://2bak.homepage.dk/smallkole3.jpg

http://2bak.homepage.dk/smallkole2.jpg

one sink for each side

tanx :redhot:

Peter Daniel 3rd September 2002 10:40 PM

I'm afraid they are not enough. But if you stack them face to face and run a fun they might be OK.:redhot:

2Bak 4th September 2002 06:20 AM

Thanks Peter Daniel

I might consider a fan.
I'm not quite sure what stack them face to face means...

topview:

http://2bak.homepage.dk/zink1.jpg

is that it?

Are silent fans for CPU cooling applicable for amps?

regards
Jan Bak Madsen

Orgonom 4th September 2002 06:36 AM

Works good
 
Hallo 2Bak,
i use these sink also with my zen (bias 3,5 A - 43V).
So im dissapating 150W. Hot, but under 55 GradC.
Go for it.:D
Andreas

jh6you 4th September 2002 09:17 AM

2Bak
 
I use the size:

H: 250 mm
W: 230 mm
D: 65 mm
Number of fins: 18

Two FETs are fitted on one sink--average 2A each at DC supply of 32V.
It's rather hot--about 50 degC at room temp 27 degC.
Mine should have been a bit bigger.

I recommend you to increase the size.

Hope this helps...

JH

Peter Daniel 4th September 2002 12:33 PM

I'm not quite sure what stack them face to face means...
 
2 Attachment(s)
I was rather thinking about something like this and placing a fan at one end.

jh6you 4th September 2002 12:45 PM

Face to face...?
I hardly see who have full of hair on the face.
Hahaha...

Good night.

JH

Peter Daniel 4th September 2002 12:55 PM

Quote:

Originally posted by jh6you
Face to face...?
I hardly see who have full of hair on the face.


JH

Just a different culture.;)

2Bak 4th September 2002 05:24 PM

well, this will be a hard decision for me to make. Was hoping for a few more of them "go for it", like Orgonoms... :magnet:

Also found an EI transformer 800VA, 2x18v. Guess you guys will turn your thumbs down on this transformer type also?

http://2bak.homepage.dk/trafo21.jpg

Weight 10 kilo = 22 pounds lb
175x135x115 mm

HDTVman 4th September 2002 05:36 PM

Hi 2Bak.

I'd use it if you have room. Why buy when you have a x-former like that in hand. :scratch2: :smirk:

later
Bruce


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