Question: VTA individual bias vs. DIYTube bias + balance?

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Question: VTA individual bias vs. DIYTube bias + balance?

Postby DerekVa » Wed May 08, 2013 11:58 am

I'm trying to wrap my head around the differences between the VTA individual bias scheme and the DIYTube bias + balance scheme. I understand the VTA board allows you to (within reason) use a completely mismatched set of tubes and bias them all optimally, but doesn't the DIYTube board allow you to more-or-less do the same thing? You are biasing the L & R sections separately (which means the two channels do not need to be matched) and then adjusting the balance between the two tubes on each channel so they are also biased optimally (which means the individual tubes in each channel do not have to be matched either). Is the big difference simply the increased range of mismatch that you are allowed with the VTA board, or am I missing something important here?

Thanks in advance,

-D
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Re: Question: VTA individual bias vs. DIYTube bias + balanc

Postby Geek » Wed May 08, 2013 9:51 pm

Half dozen of one, six of another. They do the same thing in different ways.

IMO, the DIYTube method is the one I prefer, as the tubes will interact in pairs rather than all four. You can bias in a fraction of the time.

Cheers!
-= Gregg =-
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Re: Question: VTA individual bias vs. DIYTube bias + balanc

Postby DerekVa » Wed May 08, 2013 11:16 pm

Geek wrote:Half dozen of one, six of another. They do the same thing in different ways.

IMO, the DIYTube method is the one I prefer, as the tubes will interact in pairs rather than all four. You can bias in a fraction of the time.

Cheers!


That's what I thought. Thank you for validating my ability to comprehend tube circuits!

-D
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Re: Question: VTA individual bias vs. DIYTube bias + balanc

Postby DerekVa » Wed May 08, 2013 11:26 pm

Oh, and Shannon, you have a PayPal payment in your inbox. :-)

-D
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Re: Question: VTA individual bias vs. DIYTube bias + balanc

Postby Shannon Parks » Sun May 12, 2013 7:36 am

Many thanks, and glad it got there quickly, Derek! Now to sling some solder...

Shannon
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