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 Post subject: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Tue 01, 2021 5:27 am 
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https://www.ebay.com/itm/304015908486?h ... SwgrZgtABi

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Tue 01, 2021 5:54 am 
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Any tube (Within reason) can be a High Fidelity tube (Or even a TV tube) if you try hard enough...

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Tue 01, 2021 6:39 am 
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Yes, if its ebay it must be true :roll:

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Tue 01, 2021 9:46 pm 
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Location: Carmel, Indiana
I've always felt that 01A tubes had Hi-Fidelitiy potential but were held back by 1920s components of limited fidelity such as audio transformers, microphones, phono pickups, speakers, AM detectors, records, the airwaves, overall circuit design, etc.

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Wed 02, 2021 12:28 pm 
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If you ever get a chance to listen to a properly restored RCA Radiola 28 with the 104 loudspeaker/amp/power supply, you can get a feel of what was possible.
They sound amazing for 1925 technology! :D

Granted stations weren't broadcasting much in the way of high fidelity at that time.

-Steve

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Thu 03, 2021 3:54 am 
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Location: Bossier City, Louisiana
azenithnut wrote:
If you ever get a chance to listen to a properly restored RCA Radiola 28 with the 104 loudspeaker/amp/power supply, you can get a feel of what was possible.
They sound amazing for 1925 technology! :D

Granted stations weren't broadcasting much in the way of high fidelity at that time.

-Steve



I have a Radiola 28/104 and a Radiola 32. Each employs the Rice/Kellogg speaker. They do sound quite remarkable for their time!

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Thu 03, 2021 6:45 am 
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You guys got me listening to some 20's records I picked up. Not Hi-Fi, but good for the time.

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Thu 03, 2021 6:01 pm 
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Location: Niantic, CT , USA
If not for it being so microphonic, it would have it's place as a hi fidelity tube..


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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Thu 03, 2021 7:12 pm 
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mrx wrote:
https://www.ebay.com/itm/304015908486?hash=item46c8c29e86:g:stgAAOSwgrZgtABi

Given a proper circuit design and surrounding components then, yes, it could be a hifi tube. Just not this one as it appears to have gone to air ...
John

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Thu 03, 2021 8:20 pm 
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I am almost positive, that the early tubes getter deposits didn't turn chalky white when they were exposed to air. But I don't know why it would though...In the description it says the tube tests good too.

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 Post subject: Re: Who knew a brass base 01A was a hifi tube
PostPosted: Jun Thu 03, 2021 11:59 pm 
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Location: Dayton Ohio
I've dealt with Singerhouse Sound many years ago. Seemed reputable and honest as I remember.

Not sure what to say about this tube.

-Steve

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