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Old 17th May 2004, 11:28 PM   #1
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Question N.E.W A-60 Class A heatsink

Hi Folks
I know this has been a sore subject in the past but I could not find the following information for this amp -

Does anyone know how many watts of heat this chassis is capable of dissipating? I could not find any measurements/size of the heatsink. Based on the wattage (60W/channel) I am assuming that it could do at least 100 W of heat with a 30C rise, hence effectively giving a .3C/W heatsink capability but I also heard that this amp ran very hot...does anyone know?


thanks
vsr
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Old 18th May 2004, 12:37 AM   #2
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Your estimates are very good.

I gutted an A60 (Nelson would be proud!) for my Penultimate Zen. I'm running the channels at 100W each and they run around 55 degrees C.

I bought several chassis when they went tits-up. Paid a tidy sum, but they're perfect for many of the Pass projects and I like the element of revenge / irony.
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Old 18th May 2004, 01:41 AM   #3
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Default many thanks

great! that means I should be able to run an Aleph 3 without any problems!
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Old 18th May 2004, 10:04 PM   #4
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The NEW heat sink will be very hot at 100 watts dissipation.
I have used its equivalent for 20 watt Zens, drawing about
50 watts per channel, and that was an acceptable temperature.
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Old 18th May 2004, 11:22 PM   #5
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With due respect, to the Zen master...

Is it possible you are thinking of the smaller N.E.W heatsinks? I'm using the A60 sinks dissapating around 95-100 watts at 55 degrees C.

Oh, I forgot to mention the ambient in my listening room is 10 degrees C. Just kidding....

Thanks, sir.
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Old 19th May 2004, 03:38 AM   #6
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VSR123:

Hears my ZV4 in the A60 chassis. Oriented horizontally to show the insides - digital thermometer attached to heatsink. The "Kil-A-Watt" meter (behind) reads 230 Watts power drawn from the wall.
Attached Images
File Type: jpg heat.jpg (38.5 KB, 635 views)
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Old 19th May 2004, 03:41 AM   #7
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Here's another view:
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File Type: jpg zv4.jpg (60.4 KB, 627 views)
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Old 19th May 2004, 07:24 PM   #8
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Default thanks much

I have decided to go with a bigger heatsink chassis as I want to be able to upgrade it to an Aleph 5 or Aleph-x monoblock in time

thanks for all your help
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Old 19th May 2004, 07:25 PM   #9
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Thumbs up Very neatly done, nice wiring work

.
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Old 19th May 2004, 08:31 PM   #10
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My daughter runs one just like it, but with a selector switch
and volume control.
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