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L'Amp: A simple SIT Amp
L'Amp: A simple SIT Amp
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Old 27th January 2012, 05:24 PM   #521
generg is offline generg  Germany
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L'Amp: A simple SIT Amp
Woah, unglaublich.....!

so you will have no problem with the 3-5 Watt!
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Old 27th January 2012, 05:40 PM   #522
juanitox is offline juanitox  France
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and that 's why i was going crazy with my toroids hum and buzz

few hours later , i confirm what michael say , the source degeneration with no bypass cap sounds less magical, clean but constricted tomorrow i will put some 47000uf on it
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Old 27th January 2012, 06:48 PM   #523
generg is offline generg  Germany
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L'Amp: A simple SIT Amp
take a nine volt block and go back to the magic......
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Old 27th January 2012, 06:57 PM   #524
juanitox is offline juanitox  France
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hello mon ami what is the circuit ? with your 9 volt to have 2,3 V ?
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Old 27th January 2012, 07:10 PM   #525
generg is offline generg  Germany
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L'Amp: A simple SIT Amp
oh I feel honored "mon ami....."

take a 10k pot and go with the outer pins to the 9V battery, the middle goes to the 47k or 10k of the gate

and of course you have to connect the + of the battery with the ground of the amp to go nine volt lower

you have to measure the output at the middle of the pot and start with 9V to be sure no "PUFF" will happen, later you choose the 2,x Volt...but you know this all...

look at Mikes picture.....nearly the same....
Click the image to open in full size.
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Old 27th January 2012, 07:26 PM   #526
juanitox is offline juanitox  France
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great , i will try tomorrow , anyway it's the first time i enjoy this amp in a total hum and buzz free listening
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Old 28th January 2012, 08:41 AM   #527
juanitox is offline juanitox  France
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this morning , i have finished V.3 of my sit with Fig 11 ,swapp the 10uF input cap and bypass the 1ohm source resistor with 47000uf epcos and 470uf MKP bypass ... the amp is now simple at max and sounds much better than my version with negative bias. the magic is here again even more relaxed and refined , simply fantastic pure sound...

i don't understand why , perhaps i'm more in the sweet spot for my speaker noww than before or it is the input cap ? or my negative bias who was making problem.
so for the ones who wants to go with fig11 directly i can confirm it works very well but you must bypass the source Res with good stuff to have the magic sound
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Old 28th January 2012, 10:31 AM   #528
generg is offline generg  Germany
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wonder of wonders....

merveille des merveilles.....

wunder über wunder.....

this little amp gives everybody his personal experience......

perfect......
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Last edited by generg; 28th January 2012 at 10:33 AM.
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Old 28th January 2012, 10:34 AM   #529
Zen Mod is online now Zen Mod  Serbia
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L'Amp: A simple SIT Amp
not me Bubba ........

it's too simple ...... nothing to Babelfish
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Old 28th January 2012, 10:41 AM   #530
generg is offline generg  Germany
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Default SITMANIA

Quote:
Originally Posted by Zen Mod View Post
not me Bubba ........

it's too simple ...... nothing to Babelfish
we all know that you are a complicated character....


Babel will come for you....... and fish too ......
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