why not 10k pot

jeapel · 16th April 2007, 05:44 PM

hi

standard input pot is 100k or 50k but for the best result
with miller input cap

cd output 2 v / 10k= only 200uA load current

to give better fc -3db or i m missing something

thanks

analog_sa · 16th April 2007, 09:13 PM

Where is the pot? If at the input of the power amp the high value is there to accomodate old fashioned tube sources. A lot of tube preamps don't feel comfortable driving less than 50k.

jeapel · 16th April 2007, 10:27 PM

it s a tube preamp with pot directly to input before first 6sn7
gain=20 Cin+Cmiller~=86pF and output feed directly a
aleph 3 power amp

16th April 2007, 05:44 PM	#1
jeapel diyAudio Member Join Date: Sep 2003 Location: quebec	why not 10k pot hi standard input pot is 100k or 50k but for the best result with miller input cap cd output 2 v / 10k= only 200uA load current to give better fc -3db or i m missing something thanks

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16th April 2007, 09:13 PM	#2
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	Where is the pot? If at the input of the power amp the high value is there to accomodate old fashioned tube sources. A lot of tube preamps don't feel comfortable driving less than 50k.

16th April 2007, 10:27 PM	#3
jeapel diyAudio Member Join Date: Sep 2003 Location: quebec	it s a tube preamp with pot directly to input before first 6sn7 gain=20 Cin+Cmiller~=86pF and output feed directly a aleph 3 power amp

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