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Old 24th February 2008, 10:11 PM   #581
tubee is offline tubee  Netherlands
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Not ready, but progressing:

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Car chipamp 2X22W. Will build a 70W too if this one is not powerful enough.
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Old 24th February 2008, 10:15 PM   #582
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Wow thats nice! Did you build the chassis your self? And heatsink?
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Old 24th February 2008, 10:19 PM   #583
tubee is offline tubee  Netherlands
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All diy! the alu profile is halfly sawn and bend strip for floors and steps! Cheap and nice. The cooler is a nice blue anodised one from a Compaq PII server! It all costs me about 12Eu, besides the scrap parts i used.
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Old 24th February 2008, 11:07 PM   #584
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Going to have to look for some of that aluminum strip somewhere.
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Old 25th February 2008, 12:45 AM   #585
troystg is online now troystg  United States
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Quote:
Originally posted by tubee
All diy! the alu profile is halfly sawn and bend strip for floors and steps! Cheap and nice. The cooler is a nice blue anodised one from a Compaq PII server! It all costs me about 12Eu, besides the scrap parts i used.

Can you post a picture of the internals? Also can you please post your pwr supply? You said this was for a car? I would be VERY interested in how it compares to "commercial" amps...
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Old 25th February 2008, 07:57 AM   #586
tubee is offline tubee  Netherlands
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The internals is some less fancy. Simple roughly cut perfboard, TDA1552Q chipamp with some external components (panasonic 4700 uF lytic and wima coupling/decoupling caps.) PS will be from car battery 14V, decoupled with some extra lytics.

When it's finished wil show pics.
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Old 25th February 2008, 08:15 AM   #587
r!sc! is offline r!sc!  Serbia
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Default JFET buffered with Discrete regulator without global feedback LM3875 based GC

JFET buffered with Discrete regulator without global feedback LM3875 based GC. Source http://www.pedjarogic.com/gc/index.html


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Old 25th February 2008, 08:55 AM   #588
culture is offline culture  Netherlands
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damn, that looks nice!!!
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Old 25th February 2008, 03:25 PM   #589
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Everything in its' proper place, tidy and neat, healthy conductors ... well done!
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Old 26th February 2008, 03:57 AM   #590
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Very nice work r!sc!.
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