[R-390] 5963 vs 5814

[Gordon]

I am confused as they both cross to a 12AU7 ?

73,
Gordon


On 5/17/2013 7:39 PM, Charles P. Steinmetz wrote:
> Gordon wrote:
>
>> Can I use 5963 tubes in place of some of my 5814 tubes? They both 
>> cross to the 12AU7.  I have some extra 5963's and some weak 5814 
>> tubes that need replacing.
>
> Probably, but note two things.  First, the 5963 is designed for use as 
> a binary logic element, not as an amplifier, so its characteristic 
> curve may exhibit more distortion than a 12AU7 or 5814 (both of which 
> are designed as class A amplifiers).  Second, vacuum state logic used 
> lower supply voltages than most amplifier applications, so the 5963 is 
> only rated for 250 volts on its plate (compared to 330 for the 
> 12AU7/5814).  As long as you stay within the plate voltage rating, I 
> doubt you would notice any difference in practice.
>
> Best regards,
>
> Charles
>
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