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 Subs for 112 globe tube.

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dynadude

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Join date : 2010-10-13
Age : 61
Location : Chapel Hill, NC

PostSubject: Subs for 112 globe tube.   Thu Oct 14, 2010 6:12 am

It seems these little gems are on the rare side, (112 globe) and the prices get pretty high. Are there any viable subs? I can't seem to locate anything else that will work.
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jack shirley



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Join date : 2010-10-12
Location : SE USA

PostSubject: Re: Subs for 112 globe tube.   Thu Oct 14, 2010 6:22 am

Depends how its being used. Sometimes an 01A will suffice if its used as a detector or a 71A if its used as an amp. Sometimes.
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dynadude

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PostSubject: Re: Subs for 112 globe tube.   Thu Oct 14, 2010 7:04 am

My use would be for the last tube in a Freshman Masterpiece.
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Jim Berg



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PostSubject: Re: Subs for 112 globe tube.   Thu Oct 14, 2010 8:46 am

You can probably just use a 01A and check for the plate and C battery voltages. I assume this is a battery set? You probably won't be trying to fill the house with music, so the 01A will be fine.
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IndianaRadios

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PostSubject: Re: Subs for 112 globe tube.   Thu Oct 14, 2010 9:07 am

UX-112s really aren't all that rare but good ones are. Many of those old UX-112s were run hard because the original radio owners either didn't supply those tubes with the proper grid bias voltages or the radios themselves were never properly designed (bias wise) to run UX-112s as outputs in the first place. As a result most used UX-112s that you find will test weak to poor on any given tube tester.

Right now Ebay seems to be the most convenient place to find good UX-112s.
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Mal Fuller



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PostSubject: Re: Subs for 112 globe tube.   Thu Oct 14, 2010 4:37 pm

A type 12 is a direct replacement, but is not a globe type but instead a shouldered type. Not particularly common.
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Subs for 112 globe tube.
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