Looking for an enclosure to serve as a test bench for NP's VFet http://www.diyaudio.com/forums/pass-labs/253411-article-sony-vfets-part-1-a.html amplifier series. Found this one on Fleabay B32120 Full Aluminum Enclosure BOX External Size 320×120×311MM Blank Panel | eBay but as always it's difficult to calculate C/w from a picture. Suggestions anyone?
Regards,
Dan 🙂
Regards,
Dan 🙂
This looks like the heatsink they use 1pcs Aluminum E Heatsink FOR Amplifier 300MM×115MM×50MM | eBay
My guesstimate is only .7C/w. Too far above the required .25.
Regards,
Dan
My guesstimate is only .7C/w. Too far above the required .25.
Regards,
Dan
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i have bought a pair of these , i will try it as mono amp and tell you but what i can say is they look smaller in real than in the pictures. 🙄
I think your are a little bit pessimiste : The heatsink describde above is quite in the range of Fisher Electronik (Well known and serious Heatsink compagny) SK56/100/SA . This is rate at 0.4C/W. The SK56/100 as the same number of fine +2, same substrate thickness (10mm) but is 1.5cm shorter in length (100 V/S 115mm) and fines are 1 cm smaller in length( total thickness 40 V/S 50mm). If we compare both may the ebay one could be rate at min 0.4C/W perhaps 0.35C/W so half number you estimate.
Marc
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The SK56-200 comes close to the required 0.25 at 0.3C/W. I'm assuming that would do. SK 56/ 200 SA - FISCHER ELEKTRONIK - HEAT SINK,ALUM. EXTRUDED,0.3K | Farnell UK
Regards,
Dan 🙂
Don't you mean Sissi ?
As in the movie with Romy Schneider:
Princess Elisabeth, nicknamed "Sissi"....She is a carefree, impulsive ... child.
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