An another way to Firstwatt F1?

Idefixes · 31st August 2006, 12:53 PM

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

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

Marc

Babowana · 31st August 2006, 01:45 PM

Your variation with all IRF044 of N channel, including the swapped upper CCS, looks possibly better than the Papa's original.

leadbelly · 1st February 2012, 07:41 PM

Sorry to revive an old thread, but an all IRF044 Firstwatt is just what I want. Sadly, all the links are dead. Any help?

Roscoe Primrose · 1st February 2012, 07:52 PM

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

leadbelly · 1st February 2012, 09:16 PM

Quote:

Originally Posted by Roscoe Primrose

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

Thanks!

Tea-Bag · 1st February 2012, 09:40 PM

Hurrah to current source amps!

31st August 2006, 12:53 PM	#1
Idefixes diyAudio Member Join Date: Dec 2003 Location: Mulhouse - Alsace	An another way to Firstwatt F1? As the tittle said i plan to build a F1 for may Fostex FE168ES in Back Horn 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 Marc

1st February 2012, 07:41 PM	#3
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	Sorry to revive an old thread, but an all IRF044 Firstwatt is just what I want. Sadly, all the links are dead. Any help? __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

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31st August 2006, 01:45 PM	#2
Babowana Formerly "jh6you". R.I.P. Join Date: Jul 2006	Your variation with all IRF044 of N channel, including the swapped upper CCS, looks possibly better than the Papa's original.

1st February 2012, 07:52 PM	#4
Roscoe Primrose Do you smell smoke? diyAudio Member Join Date: Jan 2004 Location: Virginia, USA	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

1st February 2012, 09:40 PM	#6
Tea-Bag not politcally affiliated diyAudio Member Join Date: Feb 2006 Location: Kennebunk Blog Entries: 11	Hurrah to current source amps!

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