My thoughts exactly, dirty window analogy does me fine, although it was not that dirty at the start.
My R2 is still in storage and is not bad at all ("Londoner that is alright sort of thing really is more like flipping blopping marvels ")
IMO The most astonishing quality of the R2 is the attack especially on wind instruments and such. Never heard the T just before the start of a note so life like.
Eventually, once I rebuild my lab, I will start with the R3 boards and take my time as you say I am sure it is worth the effort.
What you lot did not get spare boards
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input impedance is 10k so to get 560 you need 593 ohms..... why do you want 1000pF also ?
Hi Joachim
Lately I have been experiencing trouble amplifying a Benz LP with a phono preamp that is not connected to mains earth.
The issue consists on random noise like "pops" coming from both channels but not simultaneously and without any timing pattern.
The issue can be minimized just by changing cables (but I could not get rid of it) so I believe capacitance of the cables might be acting as some kind of filter.
I was wondering if using a capacitor as load would minimize this static pickup. Did you ever experience something like that ?
Lately I have been experiencing trouble amplifying a Benz LP with a phono preamp that is not connected to mains earth.
The issue consists on random noise like "pops" coming from both channels but not simultaneously and without any timing pattern.
The issue can be minimized just by changing cables (but I could not get rid of it) so I believe capacitance of the cables might be acting as some kind of filter.
I was wondering if using a capacitor as load would minimize this static pickup. Did you ever experience something like that ?
Ricardo, i had that problem recently too. I found a 35 year old AT33E ( AudioTechnica MC ) and had it retipped with a Shibata needle. Actually it sounds pretty good, even surprizing good but i got a bit of hum that i could not get away 100%. I think that comes because the cartridge body is not 100% from metal and my Spiral Groove Centroid arm has no ground wire. With my Titan i it is dead quiet. And then i also got this cracking noises, like ocasional popping popcorn. Actually it is popcorn noise. I can only asume that the wire inside the AT33A is a bit coroded after all this years.
Anyway, will put my Titan back.
I have no experience with Benz cartridges in my home. I got a friend of mine a smaller Benz ( forgot the name, retail is around 800,- € ) that works in his system without problems.
Anyway, will put my Titan back.
I have no experience with Benz cartridges in my home. I got a friend of mine a smaller Benz ( forgot the name, retail is around 800,- € ) that works in his system without problems.
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The effect of the parralel capacitor is dependent on the impedance of the uses MC cartridge. A Titan i with ca. 5 Ohm DC and low inductance is less effected then say a DENON DL103 with 40 Ohms.
Actually if you have the gutts you can measure your cartridge ( including cable ) for DC impedance and inductance and put that in the simulator together with your load resistor and cap. I did that several times with even very expensive carts and they sounded unchanged after. Some say that the magic is gone ones they measured. The small measurement current affecting the sound in a bad way. I NEVER did make that experience. OK, my meter is decent. Maybe a cheep meter puts in more current then good but modern metern measure with very low energy.
Actually if you have the gutts you can measure your cartridge ( including cable ) for DC impedance and inductance and put that in the simulator together with your load resistor and cap. I did that several times with even very expensive carts and they sounded unchanged after. Some say that the magic is gone ones they measured. The small measurement current affecting the sound in a bad way. I NEVER did make that experience. OK, my meter is decent. Maybe a cheep meter puts in more current then good but modern metern measure with very low energy.
Its not so much about increasing the bulk inductance just anywhere in the loop.
The mini inductors go smack to the signal entry pins of the input stage semis like base/gate stoppers to fight HF interactions. Don't know if self made ones can do something analogous physically, maybe.
Then again you should also try the 3.3nF load that sq225917 advised it worked on that particular cart and his Naim pre as an alternative and see where the situation leads to.
The mini inductors go smack to the signal entry pins of the input stage semis like base/gate stoppers to fight HF interactions. Don't know if self made ones can do something analogous physically, maybe.
Then again you should also try the 3.3nF load that sq225917 advised it worked on that particular cart and his Naim pre as an alternative and see where the situation leads to.