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Old 20th September 2005, 04:10 PM   #21
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2 of the 350mm heatsinks, especially the flat back version, should be enough for a stereo A30. They are definately enough for a A30 mono block. The finnis A60 runs on the hot side according to his website, using 2 300mm flanged heatsinks. Bigger heatsinks at a third less power should be fine.

The Conrad heatsinks are priced great, but the shipping is really terrific. I received mine by Aussie Post. 4 of their biggest heatsinks cost about $15USD delivered!

-David
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Old 20th September 2005, 05:02 PM   #22
wuffer is offline wuffer  Denmark
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Quote:
Originally posted by dw8083
2 of the 350mm heatsinks, especially the flat back version, should be enough for a stereo A30. They are definately enough for a A30 mono block. The finnis A60 runs on the hot side according to his website, using 2 300mm flanged heatsinks. Bigger heatsinks at a third less power should be fine.

The Conrad heatsinks are priced great, but the shipping is really terrific. I received mine by Aussie Post. 4 of their biggest heatsinks cost about $15USD delivered!

-David
sounds great... now i just have to find out wich design i would build..

is there any place where i can buy the pcb to an A30??
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Old 20th September 2005, 06:01 PM   #23
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by wuffer


sounds great... now i just have to find out wich design i would build..

is there any place where i can buy the pcb to an A30??

http://www.chipamp.com/Aleph/

Or Contact Brian.
brian@chipamp.com
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Old 20th September 2005, 06:05 PM   #24
wuffer is offline wuffer  Denmark
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out of stock but i dont need the pcb right now
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Old 20th September 2005, 06:08 PM   #25
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by wuffer
out of stock but i dont need the pcb right now

Contact him see what your options are.
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Old 22nd September 2005, 07:03 PM   #26
Stabist is offline Stabist  Slovenia
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Quote:
Originally posted by dw8083


You need to apply a correction factor of 1.4 to the Conrad rating to compensate for the right operating range.

.30 * 1.4 = .42 C/W

Why is this addiotional correction factor needed?? Regarding to what??
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Old 22nd September 2005, 07:24 PM   #27
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Conrad specifies its heatsinks at 80C rise above ambient. At lower rises the performance is less due to lower convective airflow. They provide a handy chart to help you predict performance in your situation here: http://www.conradheatsinks.com/technical_details.html (shoot for around 30C rise to have roughly 55C heat sinks.)
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