Matchless stereo mixer buffer

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skyboltone
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Matchless stereo mixer buffer

Post by skyboltone »

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Merlinb
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Re: Matchless stereo mixer buffer

Post by Merlinb »

The two ECC83s are probably arranged as virtual-earth adders, cascading into a a third adder for Y mode, maybe with the 4th triode as an output buffer, or maybe an output boost stage or something.
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skyboltone
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Re: Matchless stereo mixer buffer

Post by skyboltone »

Merlinb wrote:The two ECC83s are probably arranged as virtual-earth adders, cascading into a a third adder for Y mode, maybe with the 4th triode as an output buffer, or maybe an output boost stage or something.
:lol: :lol: Thanks Merlinb. What do you suppose the american for virtual earth adder is? Sounds a bit like the magician explaning one trick by performing another! :lol:

Dan
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Noel Grassy
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Re: Matchless stereo mixer buffer

Post by Noel Grassy »

A Virtual Earth Adder also sounds like a Computer Generated Viper that dwells underground.











I bet Steve Irwin would've tackled one. :wink:
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Merlinb
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Re: Matchless stereo mixer buffer

Post by Merlinb »

skyboltone wrote:
Merlinb wrote:The two ECC83s are probably arranged as virtual-earth adders, cascading into a a third adder for Y mode, maybe with the 4th triode as an output buffer, or maybe an output boost stage or something.
:lol: :lol: Thanks Merlinb. What do you suppose the american for virtual earth adder is? Sounds a bit like the magician explaning one trick by performing another! :lol:

Dan
It's when you apply lots of local feedback to a stage, and a series of channels are fed to the stage via input resistors. Think of an op-amp arranged as an inverting amplifier, it's the same things.
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skyboltone
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Re: Matchless stereo mixer buffer

Post by skyboltone »

Merlinb wrote:
skyboltone wrote:
Merlinb wrote:The two ECC83s are probably arranged as virtual-earth adders, cascading into a a third adder for Y mode, maybe with the 4th triode as an output buffer, or maybe an output boost stage or something.
:lol: :lol: Thanks Merlinb. What do you suppose the american for virtual earth adder is? Sounds a bit like the magician explaning one trick by performing another! :lol:

Dan
It's when you apply lots of local feedback to a stage, and a series of channels are fed to the stage via input resistors. Think of an op-amp arranged as an inverting amplifier, it's the same things.
Thanks. That does help.
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