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Old 21st April 2010, 09:03 PM   #1
toufu is offline toufu  United States
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Default Sub 6n6p for 6n1p?

I got the lampizator (SRPP) set up working as the output module for the buffalo ii dac using 6n1p tubes. Sounds really good. However, when I plug in 6n6p tubes, I got very weak output and distortion. I am using the dac in the Iout mode. And on Lampizator's page, he mentions that 6n6p is used for Vout and not Iout. Can somebody elaborate on why that is? Is there a way for me to get the SRPP circuit working using 6n6p for Iout?

Thanks.
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Old 22nd April 2010, 02:39 AM   #2
TheGimp is offline TheGimp  United States
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Depends on where you have the 6N1P biased. If it is in the 1-5mA region that is why.

The 6n6P is biased way down in the scrunched together curve region which results in high second harmonic distortion and a veiled sound.

Up the bias. You need near 10mA to get the 6N6P to sound good with low distortion.
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Old 22nd April 2010, 04:31 AM   #3
toufu is offline toufu  United States
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Got it... Is it worth the trouble now to get the 6N6P working if I have 6n1p and 6n2p working already? Thanks!
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Old 22nd April 2010, 04:43 AM   #4
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Quote:
Originally Posted by toufu View Post
Got it... Is it worth the trouble now to get the 6N6P working if I have 6n1p and 6n2p working already? Thanks!
I am afraid you want too much: 6N2P and 6N6P are too far away from each other.
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