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Old 31st August 2006, 11:53 AM   #1
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Default An another way to Firstwatt F1?

As the tittle said i plan to build a F1 for may Fostex FE168ES in Back Horn

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The construction is here it's in french but there is enough pictures.

http://idefixes.phpnet.org/sections.php?op=viewarticle&artid=6

I have in hand enough filtering capa and a empty amp case from a past project with good amout of heathink.

The Idea was to realise the F1 since these sort of amp match very well with full range speaker as fostex.
Since I have on hand 200 IRFP044 for 2 Aleph X project i ask me if it's a silly idea to replace IRFP240 by 044, in the diff paire but in CCS to. In ZenV2 there one IRFP044 CCS modele. The friend that allway help me is to busy to spend time on that

I 'redrawn my F1 idea schématic

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Marc
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Old 31st August 2006, 12:45 PM   #2
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Your variation with all IRF044 of N channel, including the swapped upper CCS, looks possibly better than the Papa's original.
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Old 1st February 2012, 06:41 PM   #3
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Sorry to revive an old thread, but an all IRF044 Firstwatt is just what I want. Sadly, all the links are dead. Any help?
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Old 1st February 2012, 06:52 PM   #4
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You should be able to just drop the IRF044 in place of the IRFP-240. If you want to also replace the IRFP9240s with IRF044s, take a look at the Zen Variations 2 article.

Roscoe
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Old 1st February 2012, 08:16 PM   #5
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Quote:
Originally Posted by Roscoe Primrose View Post
You should be able to just drop the IRF044 in place of the IRFP-240. If you want to also replace the IRFP9240s with IRF044s, take a look at the Zen Variations 2 article.

Roscoe
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Old 1st February 2012, 08:40 PM   #6
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