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Inspire by Dennis Had Enjoying Vacuum Tube Audio

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  #6581  
Old 09-15-2021, 01:21 PM
DRHamp DRHamp is offline
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Originally Posted by Analog Addict View Post
Don't forget it will work just fine with 12A/112A toobs as well....
Thanks for confirming, I don't have any 12A variants yet, but will give them a try - will be hard to beat the CX-301A though.
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  #6582  
Old 09-15-2021, 03:04 PM
Isaacc7 Isaacc7 is offline
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Originally Posted by Analog Addict View Post
Also consider the 5932, which is a ruggedized 6L6 like the 5933 is to the 807, but without the plate cap. It can be rolled right in to most of Dennis' 6L6 compatible amps. Dennis and I experimented with them a few years back, but haven't revisited them since.
But 5933 tubes are noticeably less expensive and are bound to have the same internals as the 5932. Besides, top caps are awesome!
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  #6583  
Old 09-15-2021, 08:46 PM
rmlowz rmlowz is offline
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Default NOS RCA 6F6 Metal

Trying some of these today on my Universal wow makes my Frugal Horn XLs
sing!! tight bass, strings and horns sound awesome!!

Rich

Last edited by rmlowz; 09-15-2021 at 09:07 PM.
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  #6584  
Old 09-20-2021, 03:09 AM
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Simonatsea Simonatsea is offline
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Does anyone know if I can use my newly aquired TJ full music 274b/n/+ tube in an LP-2? My current favourite tube in my pre is a Sophia Princess 274b mesh plate. Hoping a “superior” designed tube from the same manufacturer will best it.
Apparently Dennis has said its safe to use in his power amps (non infinite PS) but I am unsure of his pre’s.
Looks like this tube draws 4amps instead of 2amps of the regular 274b

Thanks
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  #6585  
Old 09-20-2021, 11:22 AM
FloridaBoy FloridaBoy is offline
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Originally Posted by Simonatsea View Post
Does anyone know if I can use my newly aquired TJ full music 274b/n/+ tube in an LP-2? My current favourite tube in my pre is a Sophia Princess 274b mesh plate. Hoping a “superior” designed tube from the same manufacturer will best it.
Apparently Dennis has said its safe to use in his power amps (non infinite PS) but I am unsure of his pre’s.
Looks like this tube draws 4amps instead of 2amps of the regular 274b

Thanks
I would not use it in the preamp until is cleared with one of the Toy Factory. BTW, the Sophia tubes were made by TJ. The owner of TJ passed and Psvane bought the small signal tube-making equipment.
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  #6586  
Old 09-20-2021, 11:26 AM
FloridaBoy FloridaBoy is offline
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Originally Posted by DRHamp View Post
Thanks for confirming, I don't have any 12A variants yet, but will give them a try - will be hard to beat the CX-301A though.
Be careful with the tubes with tungsten filaments. They are usually very microphonic. IMHO, it's probably best to get these old tubes from a solid dealer and avoid the auction site.

I did get a pair of NOS NU 71a's from Tube World Express and they are settling in nicely.

I have not tried the 12A varients.
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  #6587  
Old 09-20-2021, 02:06 PM
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Analog Addict Analog Addict is offline
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Originally Posted by FloridaBoy View Post
Be careful with the tubes with tungsten filaments. They are usually very microphonic. IMHO, it's probably best to get these old tubes from a solid dealer and avoid the auction site.

I did get a pair of NOS NU 71a's from Tube World Express and they are settling in nicely.

I have not tried the 12A varients.
I don't know how he does it, but Dennis showed me Friday, he has completely eliminated the microphonics in the LP-2030 design.

Even tapping on the 01A tubes didn't cause them to ring.....
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  #6588  
Old 09-20-2021, 03:28 PM
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Simonatsea Simonatsea is offline
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I would not use it in the preamp until is cleared with one of the Toy Factory. BTW, the Sophia tubes were made by TJ. The owner of TJ passed and Psvane bought the small signal tube-making equipment.
Thanks, I have fingers crossed one of the toy factory elves would peruse this board…
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  #6589  
Old 09-20-2021, 06:10 PM
DRHamp DRHamp is offline
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Originally Posted by FloridaBoy View Post
Be careful with the tubes with tungsten filaments. They are usually very microphonic. IMHO, it's probably best to get these old tubes from a solid dealer and avoid the auction site.

I did get a pair of NOS NU 71a's from Tube World Express and they are settling in nicely.

I have not tried the 12A varients.
I have a pair of Cunningham CX371-A that are very nice, not quite up to the CX301A IMO but close. Have a matched pair of 112A on the way - will be my first try at the 12A varients.
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  #6590  
Old 09-21-2021, 10:44 AM
FloridaBoy FloridaBoy is offline
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Originally Posted by Analog Addict View Post
I don't know how he does it, but Dennis showed me Friday, he has completely eliminated the microphonics in the LP-2030 design.

Even tapping on the 01A tubes didn't cause them to ring.....
I could have had a pair that did not come from Dennis that were duds.

The 2030 is indeed a special preamp.
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