How hot is hot?

diyman · 25th April 2003, 02:47 PM

I am in the process of building Aleph 60 monoblocks and is planning to construct chassis with heat sinks rated of 0.15 deg/watt. Would these be adequate in an ambient environment temperature of about 28 deg? I live in the tropics! I intend to build the Aleph 60 with a +/- 38V PSU. What would be the total dissipation? I am trying not to spend a few weeks to build the chassis and then find that it's dissipation is not adequate! NP SOS!

UrSv · 25th April 2003, 02:58 PM

Quote:

Originally posted by diyman
I am in the process of building Aleph 60 monoblocks and is planning to construct chassis with heat sinks rated of 0.15 deg/watt. Would these be adequate in an ambient environment temperature of about 28 deg? I live in the tropics! I intend to build the Aleph 60 with a +/- 38V PSU. What would be the total dissipation? I am trying not to spend a few weeks to build the chassis and then find that it's dissipation is not adequate! NP SOS!

It is 200 W per channel, or a bit more in your case, and you would use 0.15 heatsinks meaning 30 degrees increase plus you 28 giving 58. That is a little bit hot. If you use 2 sinks per channel then you would be closer to 45 degrees which would be excellent.

Nelson Pass · 25th April 2003, 06:09 PM

On the other hand, it will probably work for quite a long time.

till · 25th April 2003, 06:44 PM

I have no problems with higher temperature. My Zen V2 runs at about 74°C on heatsinks for 1 year now with IRFP150N and for long hours.

PMA · 25th April 2003, 09:17 PM

74°C is hotter than reasonable value, I think you should not exceed 60°C.

Pavel

karma · 26th April 2003, 11:15 PM

i would say mine runs at 74'c to and never gets any hotter even at idol. it keeps the chill out of my living room.u get a good amp and a space heater

25th April 2003, 02:47 PM	#1
diyman diyAudio Member Join Date: Nov 2001 Location: Malaysia	How hot is hot? I am in the process of building Aleph 60 monoblocks and is planning to construct chassis with heat sinks rated of 0.15 deg/watt. Would these be adequate in an ambient environment temperature of about 28 deg? I live in the tropics! I intend to build the Aleph 60 with a +/- 38V PSU. What would be the total dissipation? I am trying not to spend a few weeks to build the chassis and then find that it's dissipation is not adequate! NP SOS!

26th April 2003, 11:15 PM	#6
karma diyAudio Member Join Date: Feb 2003 Location: hamilton,ontario	same here i would say mine runs at 74'c to and never gets any hotter even at idol. it keeps the chill out of my living room.u get a good amp and a space heater

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25th April 2003, 06:09 PM	#3
Nelson Pass The one and only Join Date: Mar 2001	On the other hand, it will probably work for quite a long time.

25th April 2003, 06:44 PM	#4
till Banned Join Date: Apr 2002 Location: Germany, Clausthal	I have no problems with higher temperature. My Zen V2 runs at about 74°C on heatsinks for 1 year now with IRFP150N and for long hours.

25th April 2003, 09:17 PM	#5
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	74°C is hotter than reasonable value, I think you should not exceed 60°C. Pavel

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