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Old 15th November 2010, 05:53 PM   #561
EUVL is offline EUVL  Europe
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AR2,

Gorgeous cases. Thanks for sharing with us.

I am sure they will undoubtedly qualify for having enough heat-sinking capability.
Everything comes at a price, don't they ?




Best regards,
Patrick
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Old 16th November 2010, 06:12 AM   #562
Luke is offline Luke  New Zealand
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Originally Posted by EUVL View Post
AR2,

Everything comes at a price, don't they ?

Best regards,
Patrick
not if you out source to China
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Old 16th November 2010, 07:39 AM   #563
_henry_ is offline _henry_  Australia
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i agree.

i bought full alum chassis enough for the f5 about 120us$, weighs about 20kg.

cheers
henry
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Old 16th November 2010, 07:52 AM   #564
massimo is offline massimo  Italy
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i bought full alum chassis enough for the f5 about 120us$, weighs about 20kg.
Roughly, the cost of the raw material.
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Old 16th November 2010, 09:12 AM   #565
Luke is offline Luke  New Zealand
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Roughly, the cost of the raw material.
I guess that depends where in the world you live. Cost of raw materials has alot to do with infrasruture costs,ie transport, power, real estate, labour etc. Clearly this is cheaper in China than Germany.
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Old 16th November 2010, 09:51 AM   #566
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Isn't buying chassis from China risky, they could be fakes.


Howcome i have the feeling, Vladimir and I shop at the same street sign corner ?
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BOXES for crying out loud
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Old 16th November 2010, 10:22 AM   #567
_henry_ is offline _henry_  Australia
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since i bought them myself in guangzhou, so i can choose which one to buy.

the raw aluminum market price there between 15-20,000rmb or 2200-3000usd/ton depends on the time of the market.

china have many things to choose from, u can buy the cheapest available, but u can also buy things that really have good value.

cheers
henry
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Old 16th November 2010, 03:04 PM   #568
EUVL is offline EUVL  Europe
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I am sure within a month of us publishing our photos, you can buy a cheap copy on Ebay.

The question is whether you just want it cheap, or whether you want something decent, and support the forum at the same time.


Patrick
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Old 16th November 2010, 03:19 PM   #569
massimo is offline massimo  Italy
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....you want something decent...
Decent said by Patrick means astonishing..... for sure!
Can't wait.
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Old 17th November 2010, 03:00 AM   #570
lhquam is offline lhquam  United States
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Default Should one worry about thermal expansion problems?

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The idea is good, but if you would read posts #326, 327, (339) and 341, you might also agree that it brings very little.
At most 2~3°C, at the expense of larger PCB and long signal path for the X.


Patrick

What about differences in the coefficients of thermal expansion of the pc board vs. the heatsinks? Also, between the opposite sides (ie. the opposite polarity halves) of the amplifier? Could this pose problems of mechanical stress on the terminals of the output MOSFETs?
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