Comments on: Ultra Compact Club https://diyparadise.com/w/ultra-compact-club/ ... where we have more fun! ... Fri, 29 Mar 2013 06:00:55 +0000 hourly 1 https://wordpress.org/?v=6.0.9 By: Eric https://diyparadise.com/w/ultra-compact-club/#comment-102 Tue, 19 Jul 2011 04:16:40 +0000 http://127.0.0.1/wordpress63/?p=151#comment-102 Hi Shoog,

I would love to see your improvement to the Simjple EL84

TIA,
Eric

]]> By: malcolm https://diyparadise.com/w/ultra-compact-club/#comment-101 Fri, 08 Oct 2010 20:19:31 +0000 http://127.0.0.1/wordpress63/?p=151#comment-101 Has anyone taken the Simple EL84 and used 4 x EL84 in the output stage to get about 20 watts? Thinking of a new project and kind of like the idea…

Cheers Malcolm

]]> By: yeo https://diyparadise.com/w/ultra-compact-club/#comment-100 Thu, 05 Aug 2010 16:14:01 +0000 http://127.0.0.1/wordpress63/?p=151#comment-100 hi shoog

the difference in tubes do not matter as long as it’s in the spirit of “ultra compact”.

feel free to email me the schematic. may post it here as well!

i could be reached at yeo at diyparadise dot come

thx!

yeo

]]> By: Shoog https://diyparadise.com/w/ultra-compact-club/#comment-99 Wed, 04 Aug 2010 18:08:41 +0000 http://127.0.0.1/wordpress63/?p=151#comment-99 I have built a version of the Simple EL84, but with EL86’s.
It uses a 6AU6 as the driver and has the driven EL86 with local feedback ala Schade plate to grid. The second EL86 acts as a slave antriode. The Output stage has the cathodes tied together with floating caps to allow for absolute CCS current matching.

I would love to send you a copy of the schematic to see if you like the ideas. I never actually built the basic Simple EL84, so cannot comment on whether my version is better or just different.

Thanks

]]> By: Shoog https://diyparadise.com/w/ultra-compact-club/#comment-98 Wed, 04 Aug 2010 18:07:57 +0000 http://127.0.0.1/wordpress63/?p=151#comment-98 I love the concept of the Simple EL84.
I have built a version with a few modifications which I would like to share with the community.
I have built quite a few amps and it stands its own against the best.

Shoog

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