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01-04-2012, 07:54 PM
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Senior Member
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Join Date: May 2009
Location: Cowtown
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Would there be any interest in
a complete rebuild and modding of some big tube amps in here? I'm thinking about doing a set of Allen 75s pretty soon, from stem to stern. I was just thinking this might be a nice little quiet spot if one or two guys wanted to follow along and or make suggestions. Any interest at all?
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"The Tree of Liberty must be refreshed at times, with the blood of Tyrants."
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01-05-2012, 07:55 AM
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Senior Member
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Join Date: May 2009
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I'd be on board for that
RC
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Not feeling stimulated yet.
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01-05-2012, 08:23 AM
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Possibly admin. Maybe ;)
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Join Date: Sep 2009
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I would watch in ignorance, maybe learn something
Pete
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01-05-2012, 09:23 AM
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Abby Normal
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Join Date: May 2009
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Quote:
Originally Posted by piece-itpete
I would watch in ignorance, maybe learn something
Pete
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I know your kind. You probobly only use solid state gear.
(like me )
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01-05-2012, 04:21 PM
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Area Man
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Join Date: Oct 2009
Location: The Swamp
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I think I could go for it.
Dave
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"When the lie is so big and the fog so thick, the Republican trick can play out again....."-------Frank Zappa
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01-05-2012, 04:24 PM
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Senior Member
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Quote:
Originally Posted by piece-itpete
I would watch in ignorance, maybe learn something
Pete
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That would be a first, huh Pete?
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There never Was a Good War or a Bad Peace. - Benjamin Franklin.
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01-05-2012, 10:40 PM
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Banned
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Join Date: Nov 2009
Location: The Open Border
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What tubes do they run?
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01-05-2012, 11:02 PM
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Senior Member
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Join Date: Dec 2010
Location: Willamette Valley
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Quote:
Originally Posted by Twodogs
a complete rebuild and modding of some big tube amps in here? I'm thinking about doing a set of Allen 75s pretty soon, from stem to stern. I was just thinking this might be a nice little quiet spot if one or two guys wanted to follow along and or make suggestions. Any interest at all?
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You know I'm ready to follow along and build mine with ya.
You check out that other spot I linked ya to that might be better suited?
Quote:
Originally Posted by djv8ga
What tubes do they run?
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KT-88/6550's
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01-06-2012, 06:10 PM
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Senior Member
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Join Date: May 2009
Location: Cowtown
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Quote:
Originally Posted by djv8ga
What tubes do they run?
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Stock they use a 12AY7 into an EF86, a couple 6SN7s and KT88s for outputs. To me, that's too much gain up front, so I eliminate the crappy 12AY7 and run the signal straight into the low noise pentode EF86 (6267 US number). I think the two I'm getting are all Acro iron from stem to stern, so they should be good amps if built right. They are rated at 70 watts, which is a bit of a stretch for a pair of 88s. I have a pair of mono Stromberg Carlsons (AP50s) that are rated at 50 watts running 4 6L6s per amp. I'll probably do those after the Allens. Here's a thread about them from DIY. Hope you don't mind Ron, you sold these didn't you?
http://www.diyaudio.com/forums/swap-...-restored.html
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"The Tree of Liberty must be refreshed at times, with the blood of Tyrants."
Last edited by Twodogs; 01-06-2012 at 06:12 PM.
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01-06-2012, 07:57 PM
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Banned
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Join Date: Nov 2009
Location: The Open Border
Posts: 5,126
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Quote:
Originally Posted by Twodogs
Stock they use a 12AY7 into an EF86, a couple 6SN7s and KT88s for outputs. To me, that's too much gain up front, so I eliminate the crappy 12AY7 and run the signal straight into the low noise pentode EF86 (6267 US number). I think the two I'm getting are all Acro iron from stem to stern, so they should be good amps if built right. They are rated at 70 watts, which is a bit of a stretch for a pair of 88s. I have a pair of mono Stromberg Carlsons (AP50s) that are rated at 50 watts running 4 6L6s per amp. I'll probably do those after the Allens. Here's a thread about them from DIY. Hope you don't mind Ron, you sold these didn't you?
http://www.diyaudio.com/forums/swap-...-restored.html
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Cool. All the tubes you listed are absent from my hoard though.
Maybe down the road we could build a monster useing 6LQ6's, 6LR6's, or some other sweep(?).
I have a few of those.
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