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Old 21st February 2012, 04:56 PM   #371
Horio is offline Horio  United States
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Quote:
Originally Posted by jacco vermeulen View Post
6 of these, 3 on each side, ~15" deep stereo amp.
Good for 100W Class A, manufactured all over the world.

Do the crime, pay the fine.
Found the cut sheet here:

Semikron P3 Heatsink Data Sheet

These guys sell the heatsinks in the US. You have to ask for a quote, so not sure how much they run. They do look nice.

HEATSINK-KL-285P/180
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Old 21st February 2012, 05:02 PM   #372
labjr is offline labjr  United States
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Bottom line is it's easier to make mono blocks.
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Old 21st February 2012, 05:06 PM   #373
lhquam is offline lhquam  United States
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Quote:
Originally Posted by jacco vermeulen View Post
6 of these, 3 on each side, ~15" deep stereo amp.
Good for 100W Class A, manufactured all over the world.

Do the crime, pay the fine.
Interesting heatsinks. Good for either convection or forced air.

I found the manufacturer's data sheets for those heatsinks. The item code is P3.

SEMIKRON >> Components >> Accessories >> Heat Sink

http://www.semikron.com/products/dat...3_PS503012.pdf
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Old 21st February 2012, 05:11 PM   #374
6L6 is offline 6L6  United States
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Ooh!!! I like that profile!!
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Old 21st February 2012, 05:14 PM   #375
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Basically, for a 100W Class A stereo power amp with natural convection, you have to think the size of a Krell KSA150.
Say 19" wide, 8" high, and ~15" deep with front and back plates, about 100lb.
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Old 21st February 2012, 05:17 PM   #376
CeeVee is offline CeeVee  Portugal
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Something like this JV ?

...from something i'm working on.
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Old 21st February 2012, 05:21 PM   #377
a.wayne is offline a.wayne  United States
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Quote:
Originally Posted by AudioSan View Post
you must have about dobble amount of heatsinks for a stereoamp then 2 monoblocks. lower heatsinks are more efficent than tall ones.
Do the math , it cost more to "build" 2 chassis than one, no matter which way you slice it . Here we can buy used exotica for 2K, so guess what spending 2 K for DIY does not make much sense.

Quote:
Originally Posted by koja View Post
Andy,
you cannot posibly cater to everybody's individual design, or the effort is going to fall apart.

That is why PDaniel makes the boards as small as possible, and then everybody can run wires to whatever an ideal mosfet location may be on their hsink. (only the holes for soldering nice size wire need to be provided).

p.s. for the same reason, I did not make an issue about no scoring lines and having to cut the boards for a V2 version to fit my heatsink; I am trying to live with the group choices (or else, if not possible, do my own pcb).

Precisely, this will keep going around and around , i guess most here have never had a 100 watt class-a amp , it's monster size, monster heat , monster consumption.



Quote:
Originally Posted by Horio View Post
Found the cut sheet here:

Semikron P3 Heatsink Data Sheet

These guys sell the heatsinks in the US. You have to ask for a quote, so not sure how much they run. They do look nice.

HEATSINK-KL-285P/180
Whats the cost on those sinks .... ?

Quote:
Originally Posted by labjr View Post
Bottom line is it's easier to make mono blocks.
You mean more convenient, Hard to make room or justify 4 mono chassis plus cost...
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Old 21st February 2012, 05:32 PM   #378
a.wayne is offline a.wayne  United States
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Quote:
Originally Posted by CeeVee View Post
Something like this JV ?

...from something i'm working on.
Errr.. Looks fantastic ....... I like ....
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Old 21st February 2012, 05:36 PM   #379
a.wayne is offline a.wayne  United States
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Quote:
Originally Posted by jacco vermeulen View Post
Basically, for a 100W Class A stereo power amp with natural convection, you have to think the size of a Krell KSA150.
Say 19" wide, 8" high, and ~15" deep with front and back plates, about 100lb.
MY KSA200 was a PITA , special outlets and 1400watts constantly, nothing over 50 watt class-A is necessary for me.
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Old 21st February 2012, 05:37 PM   #380
Marra is offline Marra  United Kingdom
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Also available in the UK. Email for a price.

Heatsinks: 7000 series - 7200HS

http://www.gdrectifiers.co.uk/upload...ed_modlues.pdf
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